Merge branch 'bw/c-plus-plus'

Avoid using identifiers that clash with C++ keywords.  Even though
it is not a goal to compile Git with C++ compilers, changes like
this help use of code analysis tools that targets C++ on our
codebase.

* bw/c-plus-plus: (37 commits)
  replace: rename 'new' variables
  trailer: rename 'template' variables
  tempfile: rename 'template' variables
  wrapper: rename 'template' variables
  environment: rename 'namespace' variables
  diff: rename 'template' variables
  environment: rename 'template' variables
  init-db: rename 'template' variables
  unpack-trees: rename 'new' variables
  trailer: rename 'new' variables
  submodule: rename 'new' variables
  split-index: rename 'new' variables
  remote: rename 'new' variables
  ref-filter: rename 'new' variables
  read-cache: rename 'new' variables
  line-log: rename 'new' variables
  imap-send: rename 'new' variables
  http: rename 'new' variables
  entry: rename 'new' variables
  diffcore-delta: rename 'new' variables
  ...

63 files changed, 663 insertions, 662 deletions

diff --git a/apply.c b/apply.c
index 7c88d4ee71..f8f15edc7c 100644
--- a/apply.c
+++ b/apply.c
@@ -2301,7 +2301,7 @@ static void update_pre_post_images(struct image *preimage,
 				   size_t len, size_t postlen)
 {
 	int i, ctx, reduced;
-	char *new, *old, *fixed;
+	char *new_buf, *old_buf, *fixed;
 	struct image fixed_preimage;
 
 	/*
@@ -2327,25 +2327,25 @@ static void update_pre_post_images(struct image *preimage,
 	 * We trust the caller to tell us if the update can be done
 	 * in place (postlen==0) or not.
 	 */
-	old = postimage->buf;
+	old_buf = postimage->buf;
 	if (postlen)
-		new = postimage->buf = xmalloc(postlen);
+		new_buf = postimage->buf = xmalloc(postlen);
 	else
-		new = old;
+		new_buf = old_buf;
 	fixed = preimage->buf;
 
 	for (i = reduced = ctx = 0; i < postimage->nr; i++) {
 		size_t l_len = postimage->line[i].len;
 		if (!(postimage->line[i].flag & LINE_COMMON)) {
 			/* an added line -- no counterparts in preimage */
-			memmove(new, old, l_len);
-			old += l_len;
-			new += l_len;
+			memmove(new_buf, old_buf, l_len);
+			old_buf += l_len;
+			new_buf += l_len;
 			continue;
 		}
 
 		/* a common context -- skip it in the original postimage */
-		old += l_len;
+		old_buf += l_len;
 
 		/* and find the corresponding one in the fixed preimage */
 		while (ctx < preimage->nr &&
@@ -2365,29 +2365,29 @@ static void update_pre_post_images(struct image *preimage,
 
 		/* and copy it in, while fixing the line length */
 		l_len = preimage->line[ctx].len;
-		memcpy(new, fixed, l_len);
-		new += l_len;
+		memcpy(new_buf, fixed, l_len);
+		new_buf += l_len;
 		fixed += l_len;
 		postimage->line[i].len = l_len;
 		ctx++;
 	}
 
 	if (postlen
-	    ? postlen < new - postimage->buf
-	    : postimage->len < new - postimage->buf)
+	    ? postlen < new_buf - postimage->buf
+	    : postimage->len < new_buf - postimage->buf)
 		die("BUG: caller miscounted postlen: asked %d, orig = %d, used = %d",
-		    (int)postlen, (int) postimage->len, (int)(new - postimage->buf));
+		    (int)postlen, (int) postimage->len, (int)(new_buf - postimage->buf));
 
 	/* Fix the length of the whole thing */
-	postimage->len = new - postimage->buf;
+	postimage->len = new_buf - postimage->buf;
 	postimage->nr -= reduced;
 }
 
 static int line_by_line_fuzzy_match(struct image *img,
 				    struct image *preimage,
 				    struct image *postimage,
-				    unsigned long try,
-				    int try_lno,
+				    unsigned long current,
+				    int current_lno,
 				    int preimage_limit)
 {
 	int i;
@@ -2404,9 +2404,9 @@ static int line_by_line_fuzzy_match(struct image *img,
 
 	for (i = 0; i < preimage_limit; i++) {
 		size_t prelen = preimage->line[i].len;
-		size_t imglen = img->line[try_lno+i].len;
+		size_t imglen = img->line[current_lno+i].len;
 
-		if (!fuzzy_matchlines(img->buf + try + imgoff, imglen,
+		if (!fuzzy_matchlines(img->buf + current + imgoff, imglen,
 				      preimage->buf + preoff, prelen))
 			return 0;
 		if (preimage->line[i].flag & LINE_COMMON)
@@ -2443,7 +2443,7 @@ static int line_by_line_fuzzy_match(struct image *img,
 	 */
 	extra_chars = preimage_end - preimage_eof;
 	strbuf_init(&fixed, imgoff + extra_chars);
-	strbuf_add(&fixed, img->buf + try, imgoff);
+	strbuf_add(&fixed, img->buf + current, imgoff);
 	strbuf_add(&fixed, preimage_eof, extra_chars);
 	fixed_buf = strbuf_detach(&fixed, &fixed_len);
 	update_pre_post_images(preimage, postimage,
@@ -2455,8 +2455,8 @@ static int match_fragment(struct apply_state *state,
 			  struct image *img,
 			  struct image *preimage,
 			  struct image *postimage,
-			  unsigned long try,
-			  int try_lno,
+			  unsigned long current,
+			  int current_lno,
 			  unsigned ws_rule,
 			  int match_beginning, int match_end)
 {
@@ -2466,12 +2466,12 @@ static int match_fragment(struct apply_state *state,
 	size_t fixed_len, postlen;
 	int preimage_limit;
 
-	if (preimage->nr + try_lno <= img->nr) {
+	if (preimage->nr + current_lno <= img->nr) {
 		/*
 		 * The hunk falls within the boundaries of img.
 		 */
 		preimage_limit = preimage->nr;
-		if (match_end && (preimage->nr + try_lno != img->nr))
+		if (match_end && (preimage->nr + current_lno != img->nr))
 			return 0;
 	} else if (state->ws_error_action == correct_ws_error &&
 		   (ws_rule & WS_BLANK_AT_EOF)) {
@@ -2482,7 +2482,7 @@ static int match_fragment(struct apply_state *state,
 		 * match with img, and the remainder of the preimage
 		 * must be blank.
 		 */
-		preimage_limit = img->nr - try_lno;
+		preimage_limit = img->nr - current_lno;
 	} else {
 		/*
 		 * The hunk extends beyond the end of the img and
@@ -2492,27 +2492,27 @@ static int match_fragment(struct apply_state *state,
 		return 0;
 	}
 
-	if (match_beginning && try_lno)
+	if (match_beginning && current_lno)
 		return 0;
 
 	/* Quick hash check */
 	for (i = 0; i < preimage_limit; i++)
-		if ((img->line[try_lno + i].flag & LINE_PATCHED) ||
-		    (preimage->line[i].hash != img->line[try_lno + i].hash))
+		if ((img->line[current_lno + i].flag & LINE_PATCHED) ||
+		    (preimage->line[i].hash != img->line[current_lno + i].hash))
 			return 0;
 
 	if (preimage_limit == preimage->nr) {
 		/*
 		 * Do we have an exact match?  If we were told to match
-		 * at the end, size must be exactly at try+fragsize,
-		 * otherwise try+fragsize must be still within the preimage,
+		 * at the end, size must be exactly at current+fragsize,
+		 * otherwise current+fragsize must be still within the preimage,
 		 * and either case, the old piece should match the preimage
 		 * exactly.
 		 */
 		if ((match_end
-		     ? (try + preimage->len == img->len)
-		     : (try + preimage->len <= img->len)) &&
-		    !memcmp(img->buf + try, preimage->buf, preimage->len))
+		     ? (current + preimage->len == img->len)
+		     : (current + preimage->len <= img->len)) &&
+		    !memcmp(img->buf + current, preimage->buf, preimage->len))
 			return 1;
 	} else {
 		/*
@@ -2543,7 +2543,7 @@ static int match_fragment(struct apply_state *state,
 	 */
 	if (state->ws_ignore_action == ignore_ws_change)
 		return line_by_line_fuzzy_match(img, preimage, postimage,
-						try, try_lno, preimage_limit);
+						current, current_lno, preimage_limit);
 
 	if (state->ws_error_action != correct_ws_error)
 		return 0;
@@ -2577,10 +2577,10 @@ static int match_fragment(struct apply_state *state,
 	 */
 	strbuf_init(&fixed, preimage->len + 1);
 	orig = preimage->buf;
-	target = img->buf + try;
+	target = img->buf + current;
 	for (i = 0; i < preimage_limit; i++) {
 		size_t oldlen = preimage->line[i].len;
-		size_t tgtlen = img->line[try_lno + i].len;
+		size_t tgtlen = img->line[current_lno + i].len;
 		size_t fixstart = fixed.len;
 		struct strbuf tgtfix;
 		int match;
@@ -2666,8 +2666,8 @@ static int find_pos(struct apply_state *state,
 		    int match_beginning, int match_end)
 {
 	int i;
-	unsigned long backwards, forwards, try;
-	int backwards_lno, forwards_lno, try_lno;
+	unsigned long backwards, forwards, current;
+	int backwards_lno, forwards_lno, current_lno;
 
 	/*
 	 * If match_beginning or match_end is specified, there is no
@@ -2687,25 +2687,25 @@ static int find_pos(struct apply_state *state,
 	if ((size_t) line > img->nr)
 		line = img->nr;
 
-	try = 0;
+	current = 0;
 	for (i = 0; i < line; i++)
-		try += img->line[i].len;
+		current += img->line[i].len;
 
 	/*
 	 * There's probably some smart way to do this, but I'll leave
 	 * that to the smart and beautiful people. I'm simple and stupid.
 	 */
-	backwards = try;
+	backwards = current;
 	backwards_lno = line;
-	forwards = try;
+	forwards = current;
 	forwards_lno = line;
-	try_lno = line;
+	current_lno = line;
 
 	for (i = 0; ; i++) {
 		if (match_fragment(state, img, preimage, postimage,
-				   try, try_lno, ws_rule,
+				   current, current_lno, ws_rule,
 				   match_beginning, match_end))
-			return try_lno;
+			return current_lno;
 
 	again:
 		if (backwards_lno == 0 && forwards_lno == img->nr)
@@ -2718,8 +2718,8 @@ static int find_pos(struct apply_state *state,
 			}
 			backwards_lno--;
 			backwards -= img->line[backwards_lno].len;
-			try = backwards;
-			try_lno = backwards_lno;
+			current = backwards;
+			current_lno = backwards_lno;
 		} else {
 			if (forwards_lno == img->nr) {
 				i++;
@@ -2727,8 +2727,8 @@ static int find_pos(struct apply_state *state,
 			}
 			forwards += img->line[forwards_lno].len;
 			forwards_lno++;
-			try = forwards;
-			try_lno = forwards_lno;
+			current = forwards;
+			current_lno = forwards_lno;
 		}
 
 	}
@@ -4163,30 +4163,30 @@ static void show_mode_change(struct patch *p, int show_name)
 static void show_rename_copy(struct patch *p)
 {
 	const char *renamecopy = p->is_rename ? "rename" : "copy";
-	const char *old, *new;
+	const char *old_name, *new_name;
 
 	/* Find common prefix */
-	old = p->old_name;
-	new = p->new_name;
+	old_name = p->old_name;
+	new_name = p->new_name;
 	while (1) {
 		const char *slash_old, *slash_new;
-		slash_old = strchr(old, '/');
-		slash_new = strchr(new, '/');
+		slash_old = strchr(old_name, '/');
+		slash_new = strchr(new_name, '/');
 		if (!slash_old ||
 		    !slash_new ||
-		    slash_old - old != slash_new - new ||
-		    memcmp(old, new, slash_new - new))
+		    slash_old - old_name != slash_new - new_name ||
+		    memcmp(old_name, new_name, slash_new - new_name))
 			break;
-		old = slash_old + 1;
-		new = slash_new + 1;
+		old_name = slash_old + 1;
+		new_name = slash_new + 1;
 	}
-	/* p->old_name thru old is the common prefix, and old and new
+	/* p->old_name thru old_name is the common prefix, and old_name and new_name
 	 * through the end of names are renames
 	 */
-	if (old != p->old_name)
+	if (old_name != p->old_name)
 		printf(" %s %.*s{%s => %s} (%d%%)\n", renamecopy,
-		       (int)(old - p->old_name), p->old_name,
-		       old, new, p->score);
+		       (int)(old_name - p->old_name), p->old_name,
+		       old_name, new_name, p->score);
 	else
 		printf(" %s %s => %s (%d%%)\n", renamecopy,
 		       p->old_name, p->new_name, p->score);
diff --git a/blame.c b/blame.c
index 1fc22b304b..200e0ad9a2 100644
--- a/blame.c
+++ b/blame.c
@@ -998,28 +998,29 @@ unsigned blame_entry_score(struct blame_scoreboard *sb, struct blame_entry *e)
 }
 
 /*
- * best_so_far[] and this[] are both a split of an existing blame_entry
- * that passes blame to the parent.  Maintain best_so_far the best split
- * so far, by comparing this and best_so_far and copying this into
+ * best_so_far[] and potential[] are both a split of an existing blame_entry
+ * that passes blame to the parent.  Maintain best_so_far the best split so
+ * far, by comparing potential and best_so_far and copying potential into
  * bst_so_far as needed.
  */
 static void copy_split_if_better(struct blame_scoreboard *sb,
 				 struct blame_entry *best_so_far,
-				 struct blame_entry *this)
+				 struct blame_entry *potential)
 {
 	int i;
 
-	if (!this[1].suspect)
+	if (!potential[1].suspect)
 		return;
 	if (best_so_far[1].suspect) {
-		if (blame_entry_score(sb, &this[1]) < blame_entry_score(sb, &best_so_far[1]))
+		if (blame_entry_score(sb, &potential[1]) <
+		    blame_entry_score(sb, &best_so_far[1]))
 			return;
 	}
 
 	for (i = 0; i < 3; i++)
-		blame_origin_incref(this[i].suspect);
+		blame_origin_incref(potential[i].suspect);
 	decref_split(best_so_far);
-	memcpy(best_so_far, this, sizeof(struct blame_entry [3]));
+	memcpy(best_so_far, potential, sizeof(struct blame_entry[3]));
 }
 
 /*
@@ -1046,12 +1047,12 @@ static void handle_split(struct blame_scoreboard *sb,
 	if (ent->num_lines <= tlno)
 		return;
 	if (tlno < same) {
-		struct blame_entry this[3];
+		struct blame_entry potential[3];
 		tlno += ent->s_lno;
 		same += ent->s_lno;
-		split_overlap(this, ent, tlno, plno, same, parent);
-		copy_split_if_better(sb, split, this);
-		decref_split(this);
+		split_overlap(potential, ent, tlno, plno, same, parent);
+		copy_split_if_better(sb, split, potential);
+		decref_split(potential);
 	}
 }
 
@@ -1273,7 +1274,7 @@ static void find_copy_in_parent(struct blame_scoreboard *sb,
 			struct diff_filepair *p = diff_queued_diff.queue[i];
 			struct blame_origin *norigin;
 			mmfile_t file_p;
-			struct blame_entry this[3];
+			struct blame_entry potential[3];
 
 			if (!DIFF_FILE_VALID(p->one))
 				continue; /* does not exist in parent */
@@ -1292,10 +1293,10 @@ static void find_copy_in_parent(struct blame_scoreboard *sb,
 
 			for (j = 0; j < num_ents; j++) {
 				find_copy_in_blob(sb, blame_list[j].ent,
-						  norigin, this, &file_p);
+						  norigin, potential, &file_p);
 				copy_split_if_better(sb, blame_list[j].split,
-						     this);
-				decref_split(this);
+						     potential);
+				decref_split(potential);
 			}
 			blame_origin_decref(norigin);
 		}
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index cf9ea5c796..d90170f070 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -76,7 +76,7 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
 	buf = NULL;
 	switch (opt) {
 	case 't':
-		oi.typename = &sb;
+		oi.type_name = &sb;
 		if (sha1_object_info_extended(oid.hash, &oi, flags) < 0)
 			die("git cat-file: could not get object info");
 		if (sb.len) {
@@ -229,7 +229,7 @@ static void expand_atom(struct strbuf *sb, const char *atom, int len,
 		if (data->mark_query)
 			data->info.typep = &data->type;
 		else
-			strbuf_addstr(sb, typename(data->type));
+			strbuf_addstr(sb, type_name(data->type));
 	} else if (is_atom("objectsize", atom, len)) {
 		if (data->mark_query)
 			data->info.sizep = &data->size;
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 191b96c49c..a52af2e507 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -54,14 +54,14 @@ struct checkout_opts {
 	struct tree *source_tree;
 };
 
-static int post_checkout_hook(struct commit *old, struct commit *new,
+static int post_checkout_hook(struct commit *old_commit, struct commit *new_commit,
 			      int changed)
 {
 	return run_hook_le(NULL, "post-checkout",
-			   oid_to_hex(old ? &old->object.oid : &null_oid),
-			   oid_to_hex(new ? &new->object.oid : &null_oid),
+			   oid_to_hex(old_commit ? &old_commit->object.oid : &null_oid),
+			   oid_to_hex(new_commit ? &new_commit->object.oid : &null_oid),
 			   changed ? "1" : "0", NULL);
-	/* "new" can be NULL when checking out from the index before
+	/* "new_commit" can be NULL when checking out from the index before
 	   a commit exists. */
 
 }
@@ -471,8 +471,8 @@ static void setup_branch_path(struct branch_info *branch)
 }
 
 static int merge_working_tree(const struct checkout_opts *opts,
-			      struct branch_info *old,
-			      struct branch_info *new,
+			      struct branch_info *old_branch_info,
+			      struct branch_info *new_branch_info,
 			      int *writeout_error)
 {
 	int ret;
@@ -484,7 +484,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
 
 	resolve_undo_clear();
 	if (opts->force) {
-		ret = reset_tree(new->commit->tree, opts, 1, writeout_error);
+		ret = reset_tree(new_branch_info->commit->tree, opts, 1, writeout_error);
 		if (ret)
 			return ret;
 	} else {
@@ -510,7 +510,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
 		topts.initial_checkout = is_cache_unborn();
 		topts.update = 1;
 		topts.merge = 1;
-		topts.gently = opts->merge && old->commit;
+		topts.gently = opts->merge && old_branch_info->commit;
 		topts.verbose_update = opts->show_progress;
 		topts.fn = twoway_merge;
 		if (opts->overwrite_ignore) {
@@ -518,11 +518,11 @@ static int merge_working_tree(const struct checkout_opts *opts,
 			topts.dir->flags |= DIR_SHOW_IGNORED;
 			setup_standard_excludes(topts.dir);
 		}
-		tree = parse_tree_indirect(old->commit ?
-					   &old->commit->object.oid :
+		tree = parse_tree_indirect(old_branch_info->commit ?
+					   &old_branch_info->commit->object.oid :
 					   the_hash_algo->empty_tree);
 		init_tree_desc(&trees[0], tree->buffer, tree->size);
-		tree = parse_tree_indirect(&new->commit->object.oid);
+		tree = parse_tree_indirect(&new_branch_info->commit->object.oid);
 		init_tree_desc(&trees[1], tree->buffer, tree->size);
 
 		ret = unpack_trees(2, trees, &topts);
@@ -539,10 +539,10 @@ static int merge_working_tree(const struct checkout_opts *opts,
 				return 1;
 
 			/*
-			 * Without old->commit, the below is the same as
+			 * Without old_branch_info->commit, the below is the same as
 			 * the two-tree unpack we already tried and failed.
 			 */
-			if (!old->commit)
+			if (!old_branch_info->commit)
 				return 1;
 
 			/* Do more real merge */
@@ -570,18 +570,18 @@ static int merge_working_tree(const struct checkout_opts *opts,
 			o.verbosity = 0;
 			work = write_tree_from_memory(&o);
 
-			ret = reset_tree(new->commit->tree, opts, 1,
+			ret = reset_tree(new_branch_info->commit->tree, opts, 1,
 					 writeout_error);
 			if (ret)
 				return ret;
-			o.ancestor = old->name;
-			o.branch1 = new->name;
+			o.ancestor = old_branch_info->name;
+			o.branch1 = new_branch_info->name;
 			o.branch2 = "local";
-			ret = merge_trees(&o, new->commit->tree, work,
-				old->commit->tree, &result);
+			ret = merge_trees(&o, new_branch_info->commit->tree, work,
+				old_branch_info->commit->tree, &result);
 			if (ret < 0)
 				exit(128);
-			ret = reset_tree(new->commit->tree, opts, 0,
+			ret = reset_tree(new_branch_info->commit->tree, opts, 0,
 					 writeout_error);
 			strbuf_release(&o.obuf);
 			if (ret)
@@ -599,15 +599,15 @@ static int merge_working_tree(const struct checkout_opts *opts,
 		die(_("unable to write new index file"));
 
 	if (!opts->force && !opts->quiet)
-		show_local_changes(&new->commit->object, &opts->diff_options);
+		show_local_changes(&new_branch_info->commit->object, &opts->diff_options);
 
 	return 0;
 }
 
-static void report_tracking(struct branch_info *new)
+static void report_tracking(struct branch_info *new_branch_info)
 {
 	struct strbuf sb = STRBUF_INIT;
-	struct branch *branch = branch_get(new->name);
+	struct branch *branch = branch_get(new_branch_info->name);
 
 	if (!format_tracking_info(branch, &sb))
 		return;
@@ -616,8 +616,8 @@ static void report_tracking(struct branch_info *new)
 }
 
 static void update_refs_for_switch(const struct checkout_opts *opts,
-				   struct branch_info *old,
-				   struct branch_info *new)
+				   struct branch_info *old_branch_info,
+				   struct branch_info *new_branch_info)
 {
 	struct strbuf msg = STRBUF_INIT;
 	const char *old_desc, *reflog_msg;
@@ -644,69 +644,69 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
 			free(refname);
 		}
 		else
-			create_branch(opts->new_branch, new->name,
+			create_branch(opts->new_branch, new_branch_info->name,
 				      opts->new_branch_force ? 1 : 0,
 				      opts->new_branch_force ? 1 : 0,
 				      opts->new_branch_log,
 				      opts->quiet,
 				      opts->track);
-		new->name = opts->new_branch;
-		setup_branch_path(new);
+		new_branch_info->name = opts->new_branch;
+		setup_branch_path(new_branch_info);
 	}
 
-	old_desc = old->name;
-	if (!old_desc && old->commit)
-		old_desc = oid_to_hex(&old->commit->object.oid);
+	old_desc = old_branch_info->name;
+	if (!old_desc && old_branch_info->commit)
+		old_desc = oid_to_hex(&old_branch_info->commit->object.oid);
 
 	reflog_msg = getenv("GIT_REFLOG_ACTION");
 	if (!reflog_msg)
 		strbuf_addf(&msg, "checkout: moving from %s to %s",
-			old_desc ? old_desc : "(invalid)", new->name);
+			old_desc ? old_desc : "(invalid)", new_branch_info->name);
 	else
 		strbuf_insert(&msg, 0, reflog_msg, strlen(reflog_msg));
 
-	if (!strcmp(new->name, "HEAD") && !new->path && !opts->force_detach) {
+	if (!strcmp(new_branch_info->name, "HEAD") && !new_branch_info->path && !opts->force_detach) {
 		/* Nothing to do. */
-	} else if (opts->force_detach || !new->path) {	/* No longer on any branch. */
-		update_ref(msg.buf, "HEAD", &new->commit->object.oid, NULL,
+	} else if (opts->force_detach || !new_branch_info->path) {	/* No longer on any branch. */
+		update_ref(msg.buf, "HEAD", &new_branch_info->commit->object.oid, NULL,
 			   REF_NO_DEREF, UPDATE_REFS_DIE_ON_ERR);
 		if (!opts->quiet) {
-			if (old->path &&
+			if (old_branch_info->path &&
 			    advice_detached_head && !opts->force_detach)
-				detach_advice(new->name);
-			describe_detached_head(_("HEAD is now at"), new->commit);
+				detach_advice(new_branch_info->name);
+			describe_detached_head(_("HEAD is now at"), new_branch_info->commit);
 		}
-	} else if (new->path) {	/* Switch branches. */
-		if (create_symref("HEAD", new->path, msg.buf) < 0)
+	} else if (new_branch_info->path) {	/* Switch branches. */
+		if (create_symref("HEAD", new_branch_info->path, msg.buf) < 0)
 			die(_("unable to update HEAD"));
 		if (!opts->quiet) {
-			if (old->path && !strcmp(new->path, old->path)) {
+			if (old_branch_info->path && !strcmp(new_branch_info->path, old_branch_info->path)) {
 				if (opts->new_branch_force)
 					fprintf(stderr, _("Reset branch '%s'\n"),
-						new->name);
+						new_branch_info->name);
 				else
 					fprintf(stderr, _("Already on '%s'\n"),
-						new->name);
+						new_branch_info->name);
 			} else if (opts->new_branch) {
 				if (opts->branch_exists)
-					fprintf(stderr, _("Switched to and reset branch '%s'\n"), new->name);
+					fprintf(stderr, _("Switched to and reset branch '%s'\n"), new_branch_info->name);
 				else
-					fprintf(stderr, _("Switched to a new branch '%s'\n"), new->name);
+					fprintf(stderr, _("Switched to a new branch '%s'\n"), new_branch_info->name);
 			} else {
 				fprintf(stderr, _("Switched to branch '%s'\n"),
-					new->name);
+					new_branch_info->name);
 			}
 		}
-		if (old->path && old->name) {
-			if (!ref_exists(old->path) && reflog_exists(old->path))
-				delete_reflog(old->path);
+		if (old_branch_info->path && old_branch_info->name) {
+			if (!ref_exists(old_branch_info->path) && reflog_exists(old_branch_info->path))
+				delete_reflog(old_branch_info->path);
 		}
 	}
 	remove_branch_state();
 	strbuf_release(&msg);
 	if (!opts->quiet &&
-	    (new->path || (!opts->force_detach && !strcmp(new->name, "HEAD"))))
-		report_tracking(new);
+	    (new_branch_info->path || (!opts->force_detach && !strcmp(new_branch_info->name, "HEAD"))))
+		report_tracking(new_branch_info);
 }
 
 static int add_pending_uninteresting_ref(const char *refname,
@@ -786,10 +786,10 @@ static void suggest_reattach(struct commit *commit, struct rev_info *revs)
  * HEAD.  If it is not reachable from any ref, this is the last chance
  * for the user to do so without resorting to reflog.
  */
-static void orphaned_commit_warning(struct commit *old, struct commit *new)
+static void orphaned_commit_warning(struct commit *old_commit, struct commit *new_commit)
 {
 	struct rev_info revs;
-	struct object *object = &old->object;
+	struct object *object = &old_commit->object;
 
 	init_revisions(&revs, NULL);
 	setup_revisions(0, NULL, &revs, NULL);
@@ -798,57 +798,57 @@ static void orphaned_commit_warning(struct commit *old, struct commit *new)
 	add_pending_object(&revs, object, oid_to_hex(&object->oid));
 
 	for_each_ref(add_pending_uninteresting_ref, &revs);
-	add_pending_oid(&revs, "HEAD", &new->object.oid, UNINTERESTING);
+	add_pending_oid(&revs, "HEAD", &new_commit->object.oid, UNINTERESTING);
 
 	if (prepare_revision_walk(&revs))
 		die(_("internal error in revision walk"));
-	if (!(old->object.flags & UNINTERESTING))
-		suggest_reattach(old, &revs);
+	if (!(old_commit->object.flags & UNINTERESTING))
+		suggest_reattach(old_commit, &revs);
 	else
-		describe_detached_head(_("Previous HEAD position was"), old);
+		describe_detached_head(_("Previous HEAD position was"), old_commit);
 
 	/* Clean up objects used, as they will be reused. */
 	clear_commit_marks_all(ALL_REV_FLAGS);
 }
 
 static int switch_branches(const struct checkout_opts *opts,
-			   struct branch_info *new)
+			   struct branch_info *new_branch_info)
 {
 	int ret = 0;
-	struct branch_info old;
+	struct branch_info old_branch_info;
 	void *path_to_free;
 	struct object_id rev;
 	int flag, writeout_error = 0;
-	memset(&old, 0, sizeof(old));
-	old.path = path_to_free = resolve_refdup("HEAD", 0, &rev, &flag);
-	if (old.path)
-		old.commit = lookup_commit_reference_gently(&rev, 1);
+	memset(&old_branch_info, 0, sizeof(old_branch_info));
+	old_branch_info.path = path_to_free = resolve_refdup("HEAD", 0, &rev, &flag);
+	if (old_branch_info.path)
+		old_branch_info.commit = lookup_commit_reference_gently(&rev, 1);
 	if (!(flag & REF_ISSYMREF))
-		old.path = NULL;
+		old_branch_info.path = NULL;
 
-	if (old.path)
-		skip_prefix(old.path, "refs/heads/", &old.name);
+	if (old_branch_info.path)
+		skip_prefix(old_branch_info.path, "refs/heads/", &old_branch_info.name);
 
-	if (!new->name) {
-		new->name = "HEAD";
-		new->commit = old.commit;
-		if (!new->commit)
+	if (!new_branch_info->name) {
+		new_branch_info->name = "HEAD";
+		new_branch_info->commit = old_branch_info.commit;
+		if (!new_branch_info->commit)
 			die(_("You are on a branch yet to be born"));
-		parse_commit_or_die(new->commit);
+		parse_commit_or_die(new_branch_info->commit);
 	}
 
-	ret = merge_working_tree(opts, &old, new, &writeout_error);
+	ret = merge_working_tree(opts, &old_branch_info, new_branch_info, &writeout_error);
 	if (ret) {
 		free(path_to_free);
 		return ret;
 	}
 
-	if (!opts->quiet && !old.path && old.commit && new->commit != old.commit)
-		orphaned_commit_warning(old.commit, new->commit);
+	if (!opts->quiet && !old_branch_info.path && old_branch_info.commit && new_branch_info->commit != old_branch_info.commit)
+		orphaned_commit_warning(old_branch_info.commit, new_branch_info->commit);
 
-	update_refs_for_switch(opts, &old, new);
+	update_refs_for_switch(opts, &old_branch_info, new_branch_info);
 
-	ret = post_checkout_hook(old.commit, new->commit, 1);
+	ret = post_checkout_hook(old_branch_info.commit, new_branch_info->commit, 1);
 	free(path_to_free);
 	return ret || writeout_error;
 }
@@ -869,7 +869,7 @@ static int git_checkout_config(const char *var, const char *value, void *cb)
 
 static int parse_branchname_arg(int argc, const char **argv,
 				int dwim_new_local_branch_ok,
-				struct branch_info *new,
+				struct branch_info *new_branch_info,
 				struct checkout_opts *opts,
 				struct object_id *rev)
 {
@@ -987,22 +987,22 @@ static int parse_branchname_arg(int argc, const char **argv,
 	argv++;
 	argc--;
 
-	new->name = arg;
-	setup_branch_path(new);
+	new_branch_info->name = arg;
+	setup_branch_path(new_branch_info);
 
-	if (!check_refname_format(new->path, 0) &&
-	    !read_ref(new->path, &branch_rev))
+	if (!check_refname_format(new_branch_info->path, 0) &&
+	    !read_ref(new_branch_info->path, &branch_rev))
 		oidcpy(rev, &branch_rev);
 	else
-		new->path = NULL; /* not an existing branch */
+		new_branch_info->path = NULL; /* not an existing branch */
 
-	new->commit = lookup_commit_reference_gently(rev, 1);
-	if (!new->commit) {
+	new_branch_info->commit = lookup_commit_reference_gently(rev, 1);
+	if (!new_branch_info->commit) {
 		/* not a commit */
 		*source_tree = parse_tree_indirect(rev);
 	} else {
-		parse_commit_or_die(new->commit);
-		*source_tree = new->commit->tree;
+		parse_commit_or_die(new_branch_info->commit);
+		*source_tree = new_branch_info->commit->tree;
 	}
 
 	if (!*source_tree)                   /* case (1): want a tree */
@@ -1042,7 +1042,7 @@ static int switch_unborn_to_new_branch(const struct checkout_opts *opts)
 }
 
 static int checkout_branch(struct checkout_opts *opts,
-			   struct branch_info *new)
+			   struct branch_info *new_branch_info)
 {
 	if (opts->pathspec.nr)
 		die(_("paths cannot be used with switching branches"));
@@ -1071,21 +1071,21 @@ static int checkout_branch(struct checkout_opts *opts,
 	} else if (opts->track == BRANCH_TRACK_UNSPECIFIED)
 		opts->track = git_branch_track;
 
-	if (new->name && !new->commit)
+	if (new_branch_info->name && !new_branch_info->commit)
 		die(_("Cannot switch branch to a non-commit '%s'"),
-		    new->name);
+		    new_branch_info->name);
 
-	if (new->path && !opts->force_detach && !opts->new_branch &&
+	if (new_branch_info->path && !opts->force_detach && !opts->new_branch &&
 	    !opts->ignore_other_worktrees) {
 		int flag;
 		char *head_ref = resolve_refdup("HEAD", 0, NULL, &flag);
 		if (head_ref &&
-		    (!(flag & REF_ISSYMREF) || strcmp(head_ref, new->path)))
-			die_if_checked_out(new->path, 1);
+		    (!(flag & REF_ISSYMREF) || strcmp(head_ref, new_branch_info->path)))
+			die_if_checked_out(new_branch_info->path, 1);
 		free(head_ref);
 	}
 
-	if (!new->commit && opts->new_branch) {
+	if (!new_branch_info->commit && opts->new_branch) {
 		struct object_id rev;
 		int flag;
 
@@ -1093,13 +1093,13 @@ static int checkout_branch(struct checkout_opts *opts,
 		    (flag & REF_ISSYMREF) && is_null_oid(&rev))
 			return switch_unborn_to_new_branch(opts);
 	}
-	return switch_branches(opts, new);
+	return switch_branches(opts, new_branch_info);
 }
 
 int cmd_checkout(int argc, const char **argv, const char *prefix)
 {
 	struct checkout_opts opts;
-	struct branch_info new;
+	struct branch_info new_branch_info;
 	char *conflict_style = NULL;
 	int dwim_new_local_branch = 1;
 	struct option options[] = {
@@ -1137,7 +1137,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 	};
 
 	memset(&opts, 0, sizeof(opts));
-	memset(&new, 0, sizeof(new));
+	memset(&new_branch_info, 0, sizeof(new_branch_info));
 	opts.overwrite_ignore = 1;
 	opts.prefix = prefix;
 	opts.show_progress = -1;
@@ -1209,7 +1209,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 			opts.track == BRANCH_TRACK_UNSPECIFIED &&
 			!opts.new_branch;
 		int n = parse_branchname_arg(argc, argv, dwim_ok,
-					     &new, &opts, &rev);
+					     &new_branch_info, &opts, &rev);
 		argv += n;
 		argc -= n;
 	}
@@ -1252,7 +1252,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 
 	UNLEAK(opts);
 	if (opts.patch_mode || opts.pathspec.nr)
-		return checkout_paths(&opts, new.name);
+		return checkout_paths(&opts, new_branch_info.name);
 	else
-		return checkout_branch(&opts, &new);
+		return checkout_branch(&opts, &new_branch_info);
 }
diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index b775a75647..473615117e 100644
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -76,7 +76,7 @@ static int diff_tree_stdin(char *line)
 	if (obj->type == OBJ_TREE)
 		return stdin_diff_trees((struct tree *)obj, p);
 	error("Object %s is a %s, not a commit or tree",
-	      oid_to_hex(&oid), typename(obj->type));
+	      oid_to_hex(&oid), type_name(obj->type));
 	return -1;
 }
 
diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index 796d0cd66c..27b2cc138e 100644
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -240,7 +240,7 @@ static void export_blob(const struct object_id *oid)
 		buf = read_sha1_file(oid->hash, &type, &size);
 		if (!buf)
 			die ("Could not read blob %s", oid_to_hex(oid));
-		if (check_sha1_signature(oid->hash, buf, size, typename(type)) < 0)
+		if (check_sha1_signature(oid->hash, buf, size, type_name(type)) < 0)
 			die("sha1 mismatch in blob %s", oid_to_hex(oid));
 		object = parse_object_buffer(oid, type, size, buf, &eaten);
 	}
@@ -757,7 +757,7 @@ static void handle_tag(const char *name, struct tag *tag)
 			if (tagged->type != OBJ_COMMIT) {
 				die ("Tag %s tags unexported %s!",
 				     oid_to_hex(&tag->object.oid),
-				     typename(tagged->type));
+				     type_name(tagged->type));
 			}
 			p = (struct commit *)tagged;
 			for (;;) {
@@ -839,7 +839,7 @@ static void get_tags_and_duplicates(struct rev_cmdline_info *info)
 		if (!commit) {
 			warning("%s: Unexpected object of type %s, skipping.",
 				e->name,
-				typename(e->item->type));
+				type_name(e->item->type));
 			continue;
 		}
 
@@ -851,7 +851,7 @@ static void get_tags_and_duplicates(struct rev_cmdline_info *info)
 			continue;
 		default: /* OBJ_TAG (nested tags) is already handled */
 			warning("Tag points to object of unexpected type %s, skipping.",
-				typename(commit->object.type));
+				type_name(commit->object.type));
 			continue;
 		}
 
diff --git a/builtin/fsck.c b/builtin/fsck.c
index 9981db2263..ef78c6c00c 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -70,7 +70,7 @@ static const char *printable_type(struct object *obj)
 			object_as_type(obj, type, 0);
 	}
 
-	ret = typename(obj->type);
+	ret = type_name(obj->type);
 	if (!ret)
 		ret = "unknown";
 
@@ -137,7 +137,7 @@ static int mark_object(struct object *obj, int type, void *data, struct fsck_opt
 		printf("broken link from %7s %s\n",
 			   printable_type(parent), describe_object(parent));
 		printf("broken link from %7s %s\n",
-			   (type == OBJ_ANY ? "unknown" : typename(type)), "unknown");
+			   (type == OBJ_ANY ? "unknown" : type_name(type)), "unknown");
 		errors_found |= ERROR_REACHABLE;
 		return 1;
 	}
diff --git a/builtin/grep.c b/builtin/grep.c
index 3ca4ac80d8..eb12070959 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -627,7 +627,7 @@ static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
 		free(data);
 		return hit;
 	}
-	die(_("unable to grep from object of type %s"), typename(obj->type));
+	die(_("unable to grep from object of type %s"), type_name(obj->type));
 }
 
 static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
diff --git a/builtin/help.c b/builtin/help.c
index d3c8fc4082..598867cfea 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -194,11 +194,11 @@ static void do_add_man_viewer_info(const char *name,
 				   size_t len,
 				   const char *value)
 {
-	struct man_viewer_info_list *new;
-	FLEX_ALLOC_MEM(new, name, name, len);
-	new->info = xstrdup(value);
-	new->next = man_viewer_info_list;
-	man_viewer_info_list = new;
+	struct man_viewer_info_list *new_man_viewer;
+	FLEX_ALLOC_MEM(new_man_viewer, name, name, len);
+	new_man_viewer->info = xstrdup(value);
+	new_man_viewer->next = man_viewer_info_list;
+	man_viewer_info_list = new_man_viewer;
 }
 
 static int add_man_viewer_path(const char *name,
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 7e3e1a461c..59878e70b8 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -228,7 +228,7 @@ static unsigned check_object(struct object *obj)
 		if (type != obj->type)
 			die(_("object %s: expected type %s, found %s"),
 			    oid_to_hex(&obj->oid),
-			    typename(obj->type), typename(type));
+			    type_name(obj->type), type_name(type));
 		obj->flags |= FLAG_CHECKED;
 		return 1;
 	}
@@ -448,7 +448,7 @@ static void *unpack_entry_data(off_t offset, unsigned long size,
 	int hdrlen;
 
 	if (!is_delta_type(type)) {
-		hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(type), size) + 1;
+		hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", type_name(type), size) + 1;
 		the_hash_algo->init_fn(&c);
 		the_hash_algo->update_fn(&c, hdr, hdrlen);
 	} else
@@ -849,7 +849,7 @@ static void sha1_object(const void *data, struct object_entry *obj_entry,
 			obj = parse_object_buffer(oid, type, size, buf,
 						  &eaten);
 			if (!obj)
-				die(_("invalid %s"), typename(type));
+				die(_("invalid %s"), type_name(type));
 			if (do_fsck_object &&
 			    fsck_object(obj, buf, size, &fsck_options))
 				die(_("Error in object"));
@@ -959,7 +959,7 @@ static void resolve_delta(struct object_entry *delta_obj,
 	if (!result->data)
 		bad_object(delta_obj->idx.offset, _("failed to apply delta"));
 	hash_object_file(result->data, result->size,
-			 typename(delta_obj->real_type), &delta_obj->idx.oid);
+			 type_name(delta_obj->real_type), &delta_obj->idx.oid);
 	sha1_object(result->data, NULL, result->size, delta_obj->real_type,
 		    &delta_obj->idx.oid);
 	counter_lock();
@@ -1378,7 +1378,7 @@ static void fix_unresolved_deltas(struct hashfile *f)
 			continue;
 
 		if (check_sha1_signature(d->sha1, base_obj->data,
-				base_obj->size, typename(type)))
+				base_obj->size, type_name(type)))
 			die(_("local object %s is corrupt"), sha1_to_hex(d->sha1));
 		base_obj->obj = append_obj_to_pack(f, d->sha1,
 					base_obj->data, base_obj->size, type);
@@ -1615,7 +1615,7 @@ static void show_pack_info(int stat_only)
 			continue;
 		printf("%s %-6s %lu %lu %"PRIuMAX,
 		       oid_to_hex(&obj->idx.oid),
-		       typename(obj->real_type), obj->size,
+		       type_name(obj->real_type), obj->size,
 		       (unsigned long)(obj[1].idx.offset - obj->idx.offset),
 		       (uintmax_t)obj->idx.offset);
 		if (is_delta_type(obj->type)) {
diff --git a/builtin/init-db.c b/builtin/init-db.c
index c9b7946bad..68ff4ad75a 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -24,11 +24,11 @@ static int init_is_bare_repository = 0;
 static int init_shared_repository = -1;
 static const char *init_db_template_dir;
 
-static void copy_templates_1(struct strbuf *path, struct strbuf *template,
+static void copy_templates_1(struct strbuf *path, struct strbuf *template_path,
 			     DIR *dir)
 {
 	size_t path_baselen = path->len;
-	size_t template_baselen = template->len;
+	size_t template_baselen = template_path->len;
 	struct dirent *de;
 
 	/* Note: if ".git/hooks" file exists in the repository being
@@ -44,12 +44,12 @@ static void copy_templates_1(struct strbuf *path, struct strbuf *template,
 		int exists = 0;
 
 		strbuf_setlen(path, path_baselen);
-		strbuf_setlen(template, template_baselen);
+		strbuf_setlen(template_path, template_baselen);
 
 		if (de->d_name[0] == '.')
 			continue;
 		strbuf_addstr(path, de->d_name);
-		strbuf_addstr(template, de->d_name);
+		strbuf_addstr(template_path, de->d_name);
 		if (lstat(path->buf, &st_git)) {
 			if (errno != ENOENT)
 				die_errno(_("cannot stat '%s'"), path->buf);
@@ -57,36 +57,36 @@ static void copy_templates_1(struct strbuf *path, struct strbuf *template,
 		else
 			exists = 1;
 
-		if (lstat(template->buf, &st_template))
-			die_errno(_("cannot stat template '%s'"), template->buf);
+		if (lstat(template_path->buf, &st_template))
+			die_errno(_("cannot stat template '%s'"), template_path->buf);
 
 		if (S_ISDIR(st_template.st_mode)) {
-			DIR *subdir = opendir(template->buf);
+			DIR *subdir = opendir(template_path->buf);
 			if (!subdir)
-				die_errno(_("cannot opendir '%s'"), template->buf);
+				die_errno(_("cannot opendir '%s'"), template_path->buf);
 			strbuf_addch(path, '/');
-			strbuf_addch(template, '/');
-			copy_templates_1(path, template, subdir);
+			strbuf_addch(template_path, '/');
+			copy_templates_1(path, template_path, subdir);
 			closedir(subdir);
 		}
 		else if (exists)
 			continue;
 		else if (S_ISLNK(st_template.st_mode)) {
 			struct strbuf lnk = STRBUF_INIT;
-			if (strbuf_readlink(&lnk, template->buf, 0) < 0)
-				die_errno(_("cannot readlink '%s'"), template->buf);
+			if (strbuf_readlink(&lnk, template_path->buf, 0) < 0)
+				die_errno(_("cannot readlink '%s'"), template_path->buf);
 			if (symlink(lnk.buf, path->buf))
 				die_errno(_("cannot symlink '%s' '%s'"),
 					  lnk.buf, path->buf);
 			strbuf_release(&lnk);
 		}
 		else if (S_ISREG(st_template.st_mode)) {
-			if (copy_file(path->buf, template->buf, st_template.st_mode))
+			if (copy_file(path->buf, template_path->buf, st_template.st_mode))
 				die_errno(_("cannot copy '%s' to '%s'"),
-					  template->buf, path->buf);
+					  template_path->buf, path->buf);
 		}
 		else
-			error(_("ignoring template %s"), template->buf);
+			error(_("ignoring template %s"), template_path->buf);
 	}
 }
 
diff --git a/builtin/merge.c b/builtin/merge.c
index f598001db2..e8d9d4383e 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -521,7 +521,7 @@ static void merge_name(const char *remote, struct strbuf *msg)
 		if (desc && desc->obj && desc->obj->type == OBJ_TAG) {
 			strbuf_addf(msg, "%s\t\t%s '%s'\n",
 				    oid_to_hex(&desc->obj->oid),
-				    typename(desc->obj->type),
+				    type_name(desc->obj->type),
 				    remote);
 			goto cleanup;
 		}
diff --git a/builtin/mktree.c b/builtin/mktree.c
index 8dd9f52f77..f5f3c0eea1 100644
--- a/builtin/mktree.c
+++ b/builtin/mktree.c
@@ -112,7 +112,7 @@ static void mktree_line(char *buf, size_t len, int nul_term_line, int allow_miss
 	mode_type = object_type(mode);
 	if (mode_type != type_from_string(ptr)) {
 		die("entry '%s' object type (%s) doesn't match mode type (%s)",
-			path, ptr, typename(mode_type));
+			path, ptr, type_name(mode_type));
 	}
 
 	/* Check the type of object identified by sha1 */
@@ -131,7 +131,7 @@ static void mktree_line(char *buf, size_t len, int nul_term_line, int allow_miss
 			 * because the new tree entry will never be correct.
 			 */
 			die("entry '%s' object %s is a %s but specified type was (%s)",
-				path, sha1_to_hex(sha1), typename(obj_type), typename(mode_type));
+				path, sha1_to_hex(sha1), type_name(obj_type), type_name(mode_type));
 		}
 	}
 
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 5c674b2843..a197926eaa 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -1379,10 +1379,10 @@ static void cleanup_preferred_base(void)
 	it = pbase_tree;
 	pbase_tree = NULL;
 	while (it) {
-		struct pbase_tree *this = it;
-		it = this->next;
-		free(this->pcache.tree_data);
-		free(this);
+		struct pbase_tree *tmp = it;
+		it = tmp->next;
+		free(tmp->pcache.tree_data);
+		free(tmp);
 	}
 
 	for (i = 0; i < ARRAY_SIZE(pbase_tree_cache); i++) {
diff --git a/builtin/pack-redundant.c b/builtin/pack-redundant.c
index aaa8136322..991e1bb76f 100644
--- a/builtin/pack-redundant.c
+++ b/builtin/pack-redundant.c
@@ -48,17 +48,17 @@ static inline void llist_item_put(struct llist_item *item)
 
 static inline struct llist_item *llist_item_get(void)
 {
-	struct llist_item *new;
+	struct llist_item *new_item;
 	if ( free_nodes ) {
-		new = free_nodes;
+		new_item = free_nodes;
 		free_nodes = free_nodes->next;
 	} else {
 		int i = 1;
-		ALLOC_ARRAY(new, BLKSIZE);
+		ALLOC_ARRAY(new_item, BLKSIZE);
 		for (; i < BLKSIZE; i++)
-			llist_item_put(&new[i]);
+			llist_item_put(&new_item[i]);
 	}
-	return new;
+	return new_item;
 }
 
 static void llist_free(struct llist *list)
@@ -80,26 +80,26 @@ static inline void llist_init(struct llist **list)
 static struct llist * llist_copy(struct llist *list)
 {
 	struct llist *ret;
-	struct llist_item *new, *old, *prev;
+	struct llist_item *new_item, *old_item, *prev;
 
 	llist_init(&ret);
 
 	if ((ret->size = list->size) == 0)
 		return ret;
 
-	new = ret->front = llist_item_get();
-	new->sha1 = list->front->sha1;
+	new_item = ret->front = llist_item_get();
+	new_item->sha1 = list->front->sha1;
 
-	old = list->front->next;
-	while (old) {
-		prev = new;
-		new = llist_item_get();
-		prev->next = new;
-		new->sha1 = old->sha1;
-		old = old->next;
+	old_item = list->front->next;
+	while (old_item) {
+		prev = new_item;
+		new_item = llist_item_get();
+		prev->next = new_item;
+		new_item->sha1 = old_item->sha1;
+		old_item = old_item->next;
 	}
-	new->next = NULL;
-	ret->back = new;
+	new_item->next = NULL;
+	ret->back = new_item;
 
 	return ret;
 }
@@ -108,24 +108,24 @@ static inline struct llist_item *llist_insert(struct llist *list,
 					      struct llist_item *after,
 					       const unsigned char *sha1)
 {
-	struct llist_item *new = llist_item_get();
-	new->sha1 = sha1;
-	new->next = NULL;
+	struct llist_item *new_item = llist_item_get();
+	new_item->sha1 = sha1;
+	new_item->next = NULL;
 
 	if (after != NULL) {
-		new->next = after->next;
-		after->next = new;
+		new_item->next = after->next;
+		after->next = new_item;
 		if (after == list->back)
-			list->back = new;
+			list->back = new_item;
 	} else {/* insert in front */
 		if (list->size == 0)
-			list->back = new;
+			list->back = new_item;
 		else
-			new->next = list->front;
-		list->front = new;
+			new_item->next = list->front;
+		list->front = new_item;
 	}
 	list->size++;
-	return new;
+	return new_item;
 }
 
 static inline struct llist_item *llist_insert_back(struct llist *list,
diff --git a/builtin/prune.c b/builtin/prune.c
index 4cfec82f40..4394d01c93 100644
--- a/builtin/prune.c
+++ b/builtin/prune.c
@@ -52,7 +52,7 @@ static int prune_object(const struct object_id *oid, const char *fullpath,
 	if (show_only || verbose) {
 		enum object_type type = sha1_object_info(oid->hash, NULL);
 		printf("%s %s\n", oid_to_hex(oid),
-		       (type > 0) ? typename(type) : "unknown");
+		       (type > 0) ? type_name(type) : "unknown");
 	}
 	if (!show_only)
 		unlink_or_warn(fullpath);
diff --git a/builtin/reflog.c b/builtin/reflog.c
index 2233725315..ac3dcd7a51 100644
--- a/builtin/reflog.c
+++ b/builtin/reflog.c
@@ -289,20 +289,20 @@ static int should_expire_reflog_ent(struct object_id *ooid, struct object_id *no
 				    const char *message, void *cb_data)
 {
 	struct expire_reflog_policy_cb *cb = cb_data;
-	struct commit *old, *new;
+	struct commit *old_commit, *new_commit;
 
 	if (timestamp < cb->cmd.expire_total)
 		return 1;
 
-	old = new = NULL;
+	old_commit = new_commit = NULL;
 	if (cb->cmd.stalefix &&
-	    (!keep_entry(&old, ooid) || !keep_entry(&new, noid)))
+	    (!keep_entry(&old_commit, ooid) || !keep_entry(&new_commit, noid)))
 		return 1;
 
 	if (timestamp < cb->cmd.expire_unreachable) {
 		if (cb->unreachable_expire_kind == UE_ALWAYS)
 			return 1;
-		if (unreachable(cb, old, ooid) || unreachable(cb, new, noid))
+		if (unreachable(cb, old_commit, ooid) || unreachable(cb, new_commit, noid))
 			return 1;
 	}
 
diff --git a/builtin/remote.c b/builtin/remote.c
index d95bf904c3..6487d92abd 100644
--- a/builtin/remote.c
+++ b/builtin/remote.c
@@ -322,7 +322,7 @@ static void read_branches(void)
 
 struct ref_states {
 	struct remote *remote;
-	struct string_list new, stale, tracked, heads, push;
+	struct string_list new_refs, stale, tracked, heads, push;
 	int queried;
 };
 
@@ -337,12 +337,12 @@ static int get_ref_states(const struct ref *remote_refs, struct ref_states *stat
 			die(_("Could not get fetch map for refspec %s"),
 				states->remote->fetch_refspec[i]);
 
-	states->new.strdup_strings = 1;
+	states->new_refs.strdup_strings = 1;
 	states->tracked.strdup_strings = 1;
 	states->stale.strdup_strings = 1;
 	for (ref = fetch_map; ref; ref = ref->next) {
 		if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
-			string_list_append(&states->new, abbrev_branch(ref->name));
+			string_list_append(&states->new_refs, abbrev_branch(ref->name));
 		else
 			string_list_append(&states->tracked, abbrev_branch(ref->name));
 	}
@@ -356,7 +356,7 @@ static int get_ref_states(const struct ref *remote_refs, struct ref_states *stat
 	free_refs(stale_refs);
 	free_refs(fetch_map);
 
-	string_list_sort(&states->new);
+	string_list_sort(&states->new_refs);
 	string_list_sort(&states->tracked);
 	string_list_sort(&states->stale);
 
@@ -546,8 +546,8 @@ static int add_branch_for_removal(const char *refname,
 }
 
 struct rename_info {
-	const char *old;
-	const char *new;
+	const char *old_name;
+	const char *new_name;
 	struct string_list *remote_branches;
 };
 
@@ -560,7 +560,7 @@ static int read_remote_branches(const char *refname,
 	int flag;
 	const char *symref;
 
-	strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
+	strbuf_addf(&buf, "refs/remotes/%s/", rename->old_name);
 	if (starts_with(refname, buf.buf)) {
 		item = string_list_append(rename->remote_branches, xstrdup(refname));
 		symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
@@ -615,36 +615,36 @@ static int mv(int argc, const char **argv)
 	if (argc != 3)
 		usage_with_options(builtin_remote_rename_usage, options);
 
-	rename.old = argv[1];
-	rename.new = argv[2];
+	rename.old_name = argv[1];
+	rename.new_name = argv[2];
 	rename.remote_branches = &remote_branches;
 
-	oldremote = remote_get(rename.old);
+	oldremote = remote_get(rename.old_name);
 	if (!remote_is_configured(oldremote, 1))
-		die(_("No such remote: %s"), rename.old);
+		die(_("No such remote: %s"), rename.old_name);
 
-	if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
+	if (!strcmp(rename.old_name, rename.new_name) && oldremote->origin != REMOTE_CONFIG)
 		return migrate_file(oldremote);
 
-	newremote = remote_get(rename.new);
+	newremote = remote_get(rename.new_name);
 	if (remote_is_configured(newremote, 1))
-		die(_("remote %s already exists."), rename.new);
+		die(_("remote %s already exists."), rename.new_name);
 
-	strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
+	strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new_name);
 	if (!valid_fetch_refspec(buf.buf))
-		die(_("'%s' is not a valid remote name"), rename.new);
+		die(_("'%s' is not a valid remote name"), rename.new_name);
 
 	strbuf_reset(&buf);
-	strbuf_addf(&buf, "remote.%s", rename.old);
-	strbuf_addf(&buf2, "remote.%s", rename.new);
+	strbuf_addf(&buf, "remote.%s", rename.old_name);
+	strbuf_addf(&buf2, "remote.%s", rename.new_name);
 	if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 		return error(_("Could not rename config section '%s' to '%s'"),
 				buf.buf, buf2.buf);
 
 	strbuf_reset(&buf);
-	strbuf_addf(&buf, "remote.%s.fetch", rename.new);
+	strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
 	git_config_set_multivar(buf.buf, NULL, NULL, 1);
-	strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
+	strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
 	for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 		char *ptr;
 
@@ -655,8 +655,8 @@ static int mv(int argc, const char **argv)
 			refspec_updated = 1;
 			strbuf_splice(&buf2,
 				      ptr-buf2.buf + strlen(":refs/remotes/"),
-				      strlen(rename.old), rename.new,
-				      strlen(rename.new));
+				      strlen(rename.old_name), rename.new_name,
+				      strlen(rename.new_name));
 		} else
 			warning(_("Not updating non-default fetch refspec\n"
 				  "\t%s\n"
@@ -670,10 +670,10 @@ static int mv(int argc, const char **argv)
 	for (i = 0; i < branch_list.nr; i++) {
 		struct string_list_item *item = branch_list.items + i;
 		struct branch_info *info = item->util;
-		if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
+		if (info->remote_name && !strcmp(info->remote_name, rename.old_name)) {
 			strbuf_reset(&buf);
 			strbuf_addf(&buf, "branch.%s.remote", item->string);
-			git_config_set(buf.buf, rename.new);
+			git_config_set(buf.buf, rename.new_name);
 		}
 	}
 
@@ -703,8 +703,8 @@ static int mv(int argc, const char **argv)
 			continue;
 		strbuf_reset(&buf);
 		strbuf_addstr(&buf, item->string);
-		strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
-				rename.new, strlen(rename.new));
+		strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
+				rename.new_name, strlen(rename.new_name));
 		strbuf_reset(&buf2);
 		strbuf_addf(&buf2, "remote: renamed %s to %s",
 				item->string, buf.buf);
@@ -718,12 +718,12 @@ static int mv(int argc, const char **argv)
 			continue;
 		strbuf_reset(&buf);
 		strbuf_addstr(&buf, item->string);
-		strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
-				rename.new, strlen(rename.new));
+		strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
+				rename.new_name, strlen(rename.new_name));
 		strbuf_reset(&buf2);
 		strbuf_addstr(&buf2, item->util);
-		strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
-				rename.new, strlen(rename.new));
+		strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old_name),
+				rename.new_name, strlen(rename.new_name));
 		strbuf_reset(&buf3);
 		strbuf_addf(&buf3, "remote: renamed %s to %s",
 				item->string, buf.buf);
@@ -822,7 +822,7 @@ static void clear_push_info(void *util, const char *string)
 
 static void free_remote_ref_states(struct ref_states *states)
 {
-	string_list_clear(&states->new, 0);
+	string_list_clear(&states->new_refs, 0);
 	string_list_clear(&states->stale, 1);
 	string_list_clear(&states->tracked, 0);
 	string_list_clear(&states->heads, 0);
@@ -907,7 +907,7 @@ static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 	if (states->queried) {
 		const char *fmt = "%s";
 		const char *arg = "";
-		if (string_list_has_string(&states->new, name)) {
+		if (string_list_has_string(&states->new_refs, name)) {
 			fmt = _(" new (next fetch will store in remotes/%s)");
 			arg = states->remote->name;
 		} else if (string_list_has_string(&states->tracked, name))
@@ -1176,7 +1176,7 @@ static int show(int argc, const char **argv)
 
 		/* remote branch info */
 		info.width = 0;
-		for_each_string_list(&states.new, add_remote_to_show_info, &info);
+		for_each_string_list(&states.new_refs, add_remote_to_show_info, &info);
 		for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
 		for_each_string_list(&states.stale, add_remote_to_show_info, &info);
 		if (info.list->nr)
diff --git a/builtin/replace.c b/builtin/replace.c
index 83d3235721..9f01f3fc7f 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -56,8 +56,8 @@ static int show_reference(const char *refname, const struct object_id *oid,
 			obj_type = sha1_object_info(object.hash, NULL);
 			repl_type = sha1_object_info(oid->hash, NULL);
 
-			printf("%s (%s) -> %s (%s)\n", refname, typename(obj_type),
-			       oid_to_hex(oid), typename(repl_type));
+			printf("%s (%s) -> %s (%s)\n", refname, type_name(obj_type),
+			       oid_to_hex(oid), type_name(repl_type));
 		}
 	}
 
@@ -168,8 +168,8 @@ static int replace_object_oid(const char *object_ref,
 		die("Objects must be of the same type.\n"
 		    "'%s' points to a replaced object of type '%s'\n"
 		    "while '%s' points to a replacement object of type '%s'.",
-		    object_ref, typename(obj_type),
-		    replace_ref, typename(repl_type));
+		    object_ref, type_name(obj_type),
+		    replace_ref, type_name(repl_type));
 
 	check_ref_valid(object, &prev, &ref, force);
 
@@ -215,7 +215,7 @@ static void export_object(const struct object_id *oid, enum object_type type,
 	argv_array_push(&cmd.args, "--no-replace-objects");
 	argv_array_push(&cmd.args, "cat-file");
 	if (raw)
-		argv_array_push(&cmd.args, typename(type));
+		argv_array_push(&cmd.args, type_name(type));
 	else
 		argv_array_push(&cmd.args, "-p");
 	argv_array_push(&cmd.args, oid_to_hex(oid));
@@ -284,30 +284,30 @@ static int edit_and_replace(const char *object_ref, int force, int raw)
 {
 	char *tmpfile = git_pathdup("REPLACE_EDITOBJ");
 	enum object_type type;
-	struct object_id old, new, prev;
+	struct object_id old_oid, new_oid, prev;
 	struct strbuf ref = STRBUF_INIT;
 
-	if (get_oid(object_ref, &old) < 0)
+	if (get_oid(object_ref, &old_oid) < 0)
 		die("Not a valid object name: '%s'", object_ref);
 
-	type = sha1_object_info(old.hash, NULL);
+	type = sha1_object_info(old_oid.hash, NULL);
 	if (type < 0)
-		die("unable to get object type for %s", oid_to_hex(&old));
+		die("unable to get object type for %s", oid_to_hex(&old_oid));
 
-	check_ref_valid(&old, &prev, &ref, force);
+	check_ref_valid(&old_oid, &prev, &ref, force);
 	strbuf_release(&ref);
 
-	export_object(&old, type, raw, tmpfile);
+	export_object(&old_oid, type, raw, tmpfile);
 	if (launch_editor(tmpfile, NULL, NULL) < 0)
 		die("editing object file failed");
-	import_object(&new, type, raw, tmpfile);
+	import_object(&new_oid, type, raw, tmpfile);
 
 	free(tmpfile);
 
-	if (!oidcmp(&old, &new))
-		return error("new object is the same as the old one: '%s'", oid_to_hex(&old));
+	if (!oidcmp(&old_oid, &new_oid))
+		return error("new object is the same as the old one: '%s'", oid_to_hex(&old_oid));
 
-	return replace_object_oid(object_ref, &old, "replacement", &new, force);
+	return replace_object_oid(object_ref, &old_oid, "replacement", &new_oid, force);
 }
 
 static void replace_parents(struct strbuf *buf, int argc, const char **argv)
@@ -355,7 +355,7 @@ static void check_one_mergetag(struct commit *commit,
 	struct tag *tag;
 	int i;
 
-	hash_object_file(extra->value, extra->len, typename(OBJ_TAG), &tag_oid);
+	hash_object_file(extra->value, extra->len, type_name(OBJ_TAG), &tag_oid);
 	tag = lookup_tag(&tag_oid);
 	if (!tag)
 		die(_("bad mergetag in commit '%s'"), ref);
@@ -386,16 +386,16 @@ static void check_mergetags(struct commit *commit, int argc, const char **argv)
 
 static int create_graft(int argc, const char **argv, int force)
 {
-	struct object_id old, new;
+	struct object_id old_oid, new_oid;
 	const char *old_ref = argv[0];
 	struct commit *commit;
 	struct strbuf buf = STRBUF_INIT;
 	const char *buffer;
 	unsigned long size;
 
-	if (get_oid(old_ref, &old) < 0)
+	if (get_oid(old_ref, &old_oid) < 0)
 		die(_("Not a valid object name: '%s'"), old_ref);
-	commit = lookup_commit_or_die(&old, old_ref);
+	commit = lookup_commit_or_die(&old_oid, old_ref);
 
 	buffer = get_commit_buffer(commit, &size);
 	strbuf_add(&buf, buffer, size);
@@ -410,15 +410,15 @@ static int create_graft(int argc, const char **argv, int force)
 
 	check_mergetags(commit, argc, argv);
 
-	if (write_object_file(buf.buf, buf.len, commit_type, &new))
+	if (write_object_file(buf.buf, buf.len, commit_type, &new_oid))
 		die(_("could not write replacement commit for: '%s'"), old_ref);
 
 	strbuf_release(&buf);
 
-	if (!oidcmp(&old, &new))
-		return error("new commit is the same as the old one: '%s'", oid_to_hex(&old));
+	if (!oidcmp(&old_oid, &new_oid))
+		return error("new commit is the same as the old one: '%s'", oid_to_hex(&old_oid));
 
-	return replace_object_oid(old_ref, &old, "replacement", &new, force);
+	return replace_object_oid(old_ref, &old_oid, "replacement", &new_oid, force);
 }
 
 int cmd_replace(int argc, const char **argv, const char *prefix)
diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index 96d06a5d01..a1e680b5e9 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -243,28 +243,28 @@ static int show_file(const char *arg, int output_prefix)
 static int try_difference(const char *arg)
 {
 	char *dotdot;
-	struct object_id oid;
-	struct object_id end;
-	const char *next;
-	const char *this;
+	struct object_id start_oid;
+	struct object_id end_oid;
+	const char *end;
+	const char *start;
 	int symmetric;
 	static const char head_by_default[] = "HEAD";
 
 	if (!(dotdot = strstr(arg, "..")))
 		return 0;
-	next = dotdot + 2;
-	this = arg;
-	symmetric = (*next == '.');
+	end = dotdot + 2;
+	start = arg;
+	symmetric = (*end == '.');
 
 	*dotdot = 0;
-	next += symmetric;
+	end += symmetric;
 
-	if (!*next)
-		next = head_by_default;
+	if (!*end)
+		end = head_by_default;
 	if (dotdot == arg)
-		this = head_by_default;
+		start = head_by_default;
 
-	if (this == head_by_default && next == head_by_default &&
+	if (start == head_by_default && end == head_by_default &&
 	    !symmetric) {
 		/*
 		 * Just ".."?  That is not a range but the
@@ -274,14 +274,14 @@ static int try_difference(const char *arg)
 		return 0;
 	}
 
-	if (!get_oid_committish(this, &oid) && !get_oid_committish(next, &end)) {
-		show_rev(NORMAL, &end, next);
-		show_rev(symmetric ? NORMAL : REVERSED, &oid, this);
+	if (!get_oid_committish(start, &start_oid) && !get_oid_committish(end, &end_oid)) {
+		show_rev(NORMAL, &end_oid, end);
+		show_rev(symmetric ? NORMAL : REVERSED, &start_oid, start);
 		if (symmetric) {
 			struct commit_list *exclude;
 			struct commit *a, *b;
-			a = lookup_commit_reference(&oid);
-			b = lookup_commit_reference(&end);
+			a = lookup_commit_reference(&start_oid);
+			b = lookup_commit_reference(&end_oid);
 			exclude = get_merge_bases(a, b);
 			while (exclude) {
 				struct commit *commit = pop_commit(&exclude);
diff --git a/builtin/tag.c b/builtin/tag.c
index 26f8d51365..8c493a569f 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -221,7 +221,7 @@ static void create_tag(const struct object_id *object, const char *tag,
 		    "tag %s\n"
 		    "tagger %s\n\n",
 		    oid_to_hex(object),
-		    typename(type),
+		    type_name(type),
 		    tag,
 		    git_committer_info(IDENT_STRICT));
 
diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c
index 7235d2ffbf..9f96949bc0 100644
--- a/builtin/unpack-objects.c
+++ b/builtin/unpack-objects.c
@@ -173,7 +173,7 @@ static void write_cached_object(struct object *obj, struct obj_buffer *obj_buf)
 	struct object_id oid;
 
 	if (write_object_file(obj_buf->buffer, obj_buf->size,
-			      typename(obj->type), &oid) < 0)
+			      type_name(obj->type), &oid) < 0)
 		die("failed to write object %s", oid_to_hex(&obj->oid));
 	obj->flags |= FLAG_WRITTEN;
 }
@@ -238,7 +238,7 @@ static void write_object(unsigned nr, enum object_type type,
 			 void *buf, unsigned long size)
 {
 	if (!strict) {
-		if (write_object_file(buf, size, typename(type),
+		if (write_object_file(buf, size, type_name(type),
 				      &obj_list[nr].oid) < 0)
 			die("failed to write object");
 		added_object(nr, type, buf, size);
@@ -246,7 +246,7 @@ static void write_object(unsigned nr, enum object_type type,
 		obj_list[nr].obj = NULL;
 	} else if (type == OBJ_BLOB) {
 		struct blob *blob;
-		if (write_object_file(buf, size, typename(type),
+		if (write_object_file(buf, size, type_name(type),
 				      &obj_list[nr].oid) < 0)
 			die("failed to write object");
 		added_object(nr, type, buf, size);
@@ -261,12 +261,12 @@ static void write_object(unsigned nr, enum object_type type,
 	} else {
 		struct object *obj;
 		int eaten;
-		hash_object_file(buf, size, typename(type), &obj_list[nr].oid);
+		hash_object_file(buf, size, type_name(type), &obj_list[nr].oid);
 		added_object(nr, type, buf, size);
 		obj = parse_object_buffer(&obj_list[nr].oid, type, size, buf,
 					  &eaten);
 		if (!obj)
-			die("invalid %s", typename(type));
+			die("invalid %s", type_name(type));
 		add_object_buffer(obj, buf, size);
 		obj->flags |= FLAG_OPEN;
 		obj_list[nr].obj = obj;
diff --git a/builtin/verify-commit.c b/builtin/verify-commit.c
index ba38ac9b15..05315ea7c9 100644
--- a/builtin/verify-commit.c
+++ b/builtin/verify-commit.c
@@ -49,7 +49,7 @@ static int verify_commit(const char *name, unsigned flags)
 		return error("%s: unable to read file.", name);
 	if (type != OBJ_COMMIT)
 		return error("%s: cannot verify a non-commit object of type %s.",
-				name, typename(type));
+				name, type_name(type));
 
 	ret = run_gpg_verify(&oid, buf, size, flags);
 
diff --git a/bulk-checkin.c b/bulk-checkin.c
index 8bcd1c8665..9d87eac07b 100644
--- a/bulk-checkin.c
+++ b/bulk-checkin.c
@@ -203,7 +203,7 @@ static int deflate_to_pack(struct bulk_checkin_state *state,
 		return error("cannot find the current offset");
 
 	header_len = xsnprintf((char *)obuf, sizeof(obuf), "%s %" PRIuMAX,
-			       typename(type), (uintmax_t)size) + 1;
+			       type_name(type), (uintmax_t)size) + 1;
 	the_hash_algo->init_fn(&ctx);
 	the_hash_algo->update_fn(&ctx, obuf, header_len);
 
diff --git a/cache.h b/cache.h
index 21fbcc2414..d06932ed0b 100644
--- a/cache.h
+++ b/cache.h
@@ -1661,7 +1661,7 @@ struct pack_entry {
  * usual "XXXXXX" trailer, and the resulting filename is written into the
  * "template" buffer. Returns the open descriptor.
  */
-extern int odb_mkstemp(struct strbuf *template, const char *pattern);
+extern int odb_mkstemp(struct strbuf *temp_filename, const char *pattern);
 
 /*
  * Create a pack .keep file named "name" (which should generally be the output
@@ -1732,7 +1732,7 @@ struct object_info {
 	unsigned long *sizep;
 	off_t *disk_sizep;
 	unsigned char *delta_base_sha1;
-	struct strbuf *typename;
+	struct strbuf *type_name;
 	void **contentp;
 
 	/* Response */
diff --git a/combine-diff.c b/combine-diff.c
index 18c74dad51..1ec9af1f81 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -162,7 +162,7 @@ enum coalesce_direction { MATCH, BASE, NEW };
 
 /* Coalesce new lines into base by finding LCS */
 static struct lline *coalesce_lines(struct lline *base, int *lenbase,
-				    struct lline *new, int lennew,
+				    struct lline *newline, int lennew,
 				    unsigned long parent, long flags)
 {
 	int **lcs;
@@ -170,12 +170,12 @@ static struct lline *coalesce_lines(struct lline *base, int *lenbase,
 	struct lline *baseend, *newend = NULL;
 	int i, j, origbaselen = *lenbase;
 
-	if (new == NULL)
+	if (newline == NULL)
 		return base;
 
 	if (base == NULL) {
 		*lenbase = lennew;
-		return new;
+		return newline;
 	}
 
 	/*
@@ -200,7 +200,7 @@ static struct lline *coalesce_lines(struct lline *base, int *lenbase,
 		directions[0][j] = NEW;
 
 	for (i = 1, baseend = base; i < origbaselen + 1; i++) {
-		for (j = 1, newend = new; j < lennew + 1; j++) {
+		for (j = 1, newend = newline; j < lennew + 1; j++) {
 			if (match_string_spaces(baseend->line, baseend->len,
 						newend->line, newend->len, flags)) {
 				lcs[i][j] = lcs[i - 1][j - 1] + 1;
@@ -241,7 +241,7 @@ static struct lline *coalesce_lines(struct lline *base, int *lenbase,
 			if (lline->prev)
 				lline->prev->next = lline->next;
 			else
-				new = lline->next;
+				newline = lline->next;
 			if (lline->next)
 				lline->next->prev = lline->prev;
 
@@ -270,7 +270,7 @@ static struct lline *coalesce_lines(struct lline *base, int *lenbase,
 		}
 	}
 
-	newend = new;
+	newend = newline;
 	while (newend) {
 		struct lline *lline = newend;
 		newend = newend->next;
diff --git a/commit.c b/commit.c
index e8a49b9c84..00c99c7272 100644
--- a/commit.c
+++ b/commit.c
@@ -272,7 +272,7 @@ const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep)
 			    oid_to_hex(&commit->object.oid));
 		if (type != OBJ_COMMIT)
 			die("expected commit for %s, got %s",
-			    oid_to_hex(&commit->object.oid), typename(type));
+			    oid_to_hex(&commit->object.oid), type_name(type));
 		if (sizep)
 			*sizep = size;
 	}
@@ -859,19 +859,19 @@ struct commit_list *get_octopus_merge_bases(struct commit_list *in)
 	commit_list_insert(in->item, &ret);
 
 	for (i = in->next; i; i = i->next) {
-		struct commit_list *new = NULL, *end = NULL;
+		struct commit_list *new_commits = NULL, *end = NULL;
 
 		for (j = ret; j; j = j->next) {
 			struct commit_list *bases;
 			bases = get_merge_bases(i->item, j->item);
-			if (!new)
-				new = bases;
+			if (!new_commits)
+				new_commits = bases;
 			else
 				end->next = bases;
 			for (k = bases; k; k = k->next)
 				end = k;
 		}
-		ret = new;
+		ret = new_commits;
 	}
 	return ret;
 }
@@ -1614,11 +1614,11 @@ struct commit *get_merge_parent(const char *name)
 struct commit_list **commit_list_append(struct commit *commit,
 					struct commit_list **next)
 {
-	struct commit_list *new = xmalloc(sizeof(struct commit_list));
-	new->item = commit;
-	*next = new;
-	new->next = NULL;
-	return &new->next;
+	struct commit_list *new_commit = xmalloc(sizeof(struct commit_list));
+	new_commit->item = commit;
+	*next = new_commit;
+	new_commit->next = NULL;
+	return &new_commit->next;
 }
 
 const char *find_commit_header(const char *msg, const char *key, size_t *out_len)
diff --git a/contrib/examples/builtin-fetch--tool.c b/contrib/examples/builtin-fetch--tool.c
index a3eb19de04..22648c3afb 100644
--- a/contrib/examples/builtin-fetch--tool.c
+++ b/contrib/examples/builtin-fetch--tool.c
@@ -15,7 +15,7 @@ static char *get_stdin(void)
 
 static void show_new(enum object_type type, unsigned char *sha1_new)
 {
-	fprintf(stderr, "  %s: %s\n", typename(type),
+	fprintf(stderr, "  %s: %s\n", type_name(type),
 		find_unique_abbrev(sha1_new, DEFAULT_ABBREV));
 }
 
diff --git a/diff-lib.c b/diff-lib.c
index a228e1a219..104f954a25 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -304,7 +304,7 @@ static int get_stat_data(const struct cache_entry *ce,
 }
 
 static void show_new_file(struct rev_info *revs,
-			  const struct cache_entry *new,
+			  const struct cache_entry *new_file,
 			  int cached, int match_missing)
 {
 	const struct object_id *oid;
@@ -315,16 +315,16 @@ static void show_new_file(struct rev_info *revs,
 	 * New file in the index: it might actually be different in
 	 * the working tree.
 	 */
-	if (get_stat_data(new, &oid, &mode, cached, match_missing,
+	if (get_stat_data(new_file, &oid, &mode, cached, match_missing,
 	    &dirty_submodule, &revs->diffopt) < 0)
 		return;
 
-	diff_index_show_file(revs, "+", new, oid, !is_null_oid(oid), mode, dirty_submodule);
+	diff_index_show_file(revs, "+", new_file, oid, !is_null_oid(oid), mode, dirty_submodule);
 }
 
 static int show_modified(struct rev_info *revs,
-			 const struct cache_entry *old,
-			 const struct cache_entry *new,
+			 const struct cache_entry *old_entry,
+			 const struct cache_entry *new_entry,
 			 int report_missing,
 			 int cached, int match_missing)
 {
@@ -332,47 +332,47 @@ static int show_modified(struct rev_info *revs,
 	const struct object_id *oid;
 	unsigned dirty_submodule = 0;
 
-	if (get_stat_data(new, &oid, &mode, cached, match_missing,
+	if (get_stat_data(new_entry, &oid, &mode, cached, match_missing,
 			  &dirty_submodule, &revs->diffopt) < 0) {
 		if (report_missing)
-			diff_index_show_file(revs, "-", old,
-					     &old->oid, 1, old->ce_mode,
+			diff_index_show_file(revs, "-", old_entry,
+					     &old_entry->oid, 1, old_entry->ce_mode,
 					     0);
 		return -1;
 	}
 
 	if (revs->combine_merges && !cached &&
-	    (oidcmp(oid, &old->oid) || oidcmp(&old->oid, &new->oid))) {
+	    (oidcmp(oid, &old_entry->oid) || oidcmp(&old_entry->oid, &new_entry->oid))) {
 		struct combine_diff_path *p;
-		int pathlen = ce_namelen(new);
+		int pathlen = ce_namelen(new_entry);
 
 		p = xmalloc(combine_diff_path_size(2, pathlen));
 		p->path = (char *) &p->parent[2];
 		p->next = NULL;
-		memcpy(p->path, new->name, pathlen);
+		memcpy(p->path, new_entry->name, pathlen);
 		p->path[pathlen] = 0;
 		p->mode = mode;
 		oidclr(&p->oid);
 		memset(p->parent, 0, 2 * sizeof(struct combine_diff_parent));
 		p->parent[0].status = DIFF_STATUS_MODIFIED;
-		p->parent[0].mode = new->ce_mode;
-		oidcpy(&p->parent[0].oid, &new->oid);
+		p->parent[0].mode = new_entry->ce_mode;
+		oidcpy(&p->parent[0].oid, &new_entry->oid);
 		p->parent[1].status = DIFF_STATUS_MODIFIED;
-		p->parent[1].mode = old->ce_mode;
-		oidcpy(&p->parent[1].oid, &old->oid);
+		p->parent[1].mode = old_entry->ce_mode;
+		oidcpy(&p->parent[1].oid, &old_entry->oid);
 		show_combined_diff(p, 2, revs->dense_combined_merges, revs);
 		free(p);
 		return 0;
 	}
 
-	oldmode = old->ce_mode;
-	if (mode == oldmode && !oidcmp(oid, &old->oid) && !dirty_submodule &&
+	oldmode = old_entry->ce_mode;
+	if (mode == oldmode && !oidcmp(oid, &old_entry->oid) && !dirty_submodule &&
 	    !revs->diffopt.flags.find_copies_harder)
 		return 0;
 
 	diff_change(&revs->diffopt, oldmode, mode,
-		    &old->oid, oid, 1, !is_null_oid(oid),
-		    old->name, 0, dirty_submodule);
+		    &old_entry->oid, oid, 1, !is_null_oid(oid),
+		    old_entry->name, 0, dirty_submodule);
 	return 0;
 }
 
diff --git a/diff.c b/diff.c
index 21c3838b25..915f4d6e9f 100644
--- a/diff.c
+++ b/diff.c
@@ -1504,7 +1504,7 @@ struct diff_words_style_elem {
 
 struct diff_words_style {
 	enum diff_words_type type;
-	struct diff_words_style_elem new, old, ctx;
+	struct diff_words_style_elem new_word, old_word, ctx;
 	const char *newline;
 };
 
@@ -1655,12 +1655,12 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
 	}
 	if (minus_begin != minus_end) {
 		fn_out_diff_words_write_helper(diff_words->opt,
-				&style->old, style->newline,
+				&style->old_word, style->newline,
 				minus_end - minus_begin, minus_begin);
 	}
 	if (plus_begin != plus_end) {
 		fn_out_diff_words_write_helper(diff_words->opt,
-				&style->new, style->newline,
+				&style->new_word, style->newline,
 				plus_end - plus_begin, plus_begin);
 	}
 
@@ -1758,7 +1758,7 @@ static void diff_words_show(struct diff_words_data *diff_words)
 		emit_diff_symbol(diff_words->opt, DIFF_SYMBOL_WORD_DIFF,
 				 line_prefix, strlen(line_prefix), 0);
 		fn_out_diff_words_write_helper(diff_words->opt,
-			&style->old, style->newline,
+			&style->old_word, style->newline,
 			diff_words->minus.text.size,
 			diff_words->minus.text.ptr);
 		diff_words->minus.text.size = 0;
@@ -1883,8 +1883,8 @@ static void init_diff_words_data(struct emit_callback *ecbdata,
 	}
 	if (want_color(o->use_color)) {
 		struct diff_words_style *st = ecbdata->diff_words->style;
-		st->old.color = diff_get_color_opt(o, DIFF_FILE_OLD);
-		st->new.color = diff_get_color_opt(o, DIFF_FILE_NEW);
+		st->old_word.color = diff_get_color_opt(o, DIFF_FILE_OLD);
+		st->new_word.color = diff_get_color_opt(o, DIFF_FILE_NEW);
 		st->ctx.color = diff_get_color_opt(o, DIFF_CONTEXT);
 	}
 }
@@ -2047,8 +2047,8 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
 
 static char *pprint_rename(const char *a, const char *b)
 {
-	const char *old = a;
-	const char *new = b;
+	const char *old_name = a;
+	const char *new_name = b;
 	struct strbuf name = STRBUF_INIT;
 	int pfx_length, sfx_length;
 	int pfx_adjust_for_slash;
@@ -2067,16 +2067,16 @@ static char *pprint_rename(const char *a, const char *b)
 
 	/* Find common prefix */
 	pfx_length = 0;
-	while (*old && *new && *old == *new) {
-		if (*old == '/')
-			pfx_length = old - a + 1;
-		old++;
-		new++;
+	while (*old_name && *new_name && *old_name == *new_name) {
+		if (*old_name == '/')
+			pfx_length = old_name - a + 1;
+		old_name++;
+		new_name++;
 	}
 
 	/* Find common suffix */
-	old = a + len_a;
-	new = b + len_b;
+	old_name = a + len_a;
+	new_name = b + len_b;
 	sfx_length = 0;
 	/*
 	 * If there is a common prefix, it must end in a slash.  In
@@ -2087,13 +2087,13 @@ static char *pprint_rename(const char *a, const char *b)
 	 * underrun the input strings.
 	 */
 	pfx_adjust_for_slash = (pfx_length ? 1 : 0);
-	while (a + pfx_length - pfx_adjust_for_slash <= old &&
-	       b + pfx_length - pfx_adjust_for_slash <= new &&
-	       *old == *new) {
-		if (*old == '/')
-			sfx_length = len_a - (old - a);
-		old--;
-		new--;
+	while (a + pfx_length - pfx_adjust_for_slash <= old_name &&
+	       b + pfx_length - pfx_adjust_for_slash <= new_name &&
+	       *old_name == *new_name) {
+		if (*old_name == '/')
+			sfx_length = len_a - (old_name - a);
+		old_name--;
+		new_name--;
 	}
 
 	/*
@@ -2594,14 +2594,14 @@ struct dirstat_dir {
 static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
 		unsigned long changed, const char *base, int baselen)
 {
-	unsigned long this_dir = 0;
+	unsigned long sum_changes = 0;
 	unsigned int sources = 0;
 	const char *line_prefix = diff_line_prefix(opt);
 
 	while (dir->nr) {
 		struct dirstat_file *f = dir->files;
 		int namelen = strlen(f->name);
-		unsigned long this;
+		unsigned long changes;
 		char *slash;
 
 		if (namelen < baselen)
@@ -2611,15 +2611,15 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
 		slash = strchr(f->name + baselen, '/');
 		if (slash) {
 			int newbaselen = slash + 1 - f->name;
-			this = gather_dirstat(opt, dir, changed, f->name, newbaselen);
+			changes = gather_dirstat(opt, dir, changed, f->name, newbaselen);
 			sources++;
 		} else {
-			this = f->changed;
+			changes = f->changed;
 			dir->files++;
 			dir->nr--;
 			sources += 2;
 		}
-		this_dir += this;
+		sum_changes += changes;
 	}
 
 	/*
@@ -2629,8 +2629,8 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
 	 *    under this directory (sources == 1).
 	 */
 	if (baselen && sources != 1) {
-		if (this_dir) {
-			int permille = this_dir * 1000 / changed;
+		if (sum_changes) {
+			int permille = sum_changes * 1000 / changed;
 			if (permille >= dir->permille) {
 				fprintf(opt->file, "%s%4d.%01d%% %.*s\n", line_prefix,
 					permille / 10, permille % 10, baselen, base);
@@ -2639,7 +2639,7 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
 			}
 		}
 	}
-	return this_dir;
+	return sum_changes;
 }
 
 static int dirstat_compare(const void *_a, const void *_b)
@@ -3660,15 +3660,15 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
 			   int mode)
 {
 	struct strbuf buf = STRBUF_INIT;
-	struct strbuf template = STRBUF_INIT;
+	struct strbuf tempfile = STRBUF_INIT;
 	char *path_dup = xstrdup(path);
 	const char *base = basename(path_dup);
 
 	/* Generate "XXXXXX_basename.ext" */
-	strbuf_addstr(&template, "XXXXXX_");
-	strbuf_addstr(&template, base);
+	strbuf_addstr(&tempfile, "XXXXXX_");
+	strbuf_addstr(&tempfile, base);
 
-	temp->tempfile = mks_tempfile_ts(template.buf, strlen(base) + 1);
+	temp->tempfile = mks_tempfile_ts(tempfile.buf, strlen(base) + 1);
 	if (!temp->tempfile)
 		die_errno("unable to create temp-file");
 	if (convert_to_working_tree(path,
@@ -3683,7 +3683,7 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
 	oid_to_hex_r(temp->hex, oid);
 	xsnprintf(temp->mode, sizeof(temp->mode), "%06o", mode);
 	strbuf_release(&buf);
-	strbuf_release(&template);
+	strbuf_release(&tempfile);
 	free(path_dup);
 }
 
diff --git a/diffcore-delta.c b/diffcore-delta.c
index ebe70fb068..c83d45a047 100644
--- a/diffcore-delta.c
+++ b/diffcore-delta.c
@@ -48,16 +48,16 @@ struct spanhash_top {
 
 static struct spanhash_top *spanhash_rehash(struct spanhash_top *orig)
 {
-	struct spanhash_top *new;
+	struct spanhash_top *new_spanhash;
 	int i;
 	int osz = 1 << orig->alloc_log2;
 	int sz = osz << 1;
 
-	new = xmalloc(st_add(sizeof(*orig),
+	new_spanhash = xmalloc(st_add(sizeof(*orig),
 			     st_mult(sizeof(struct spanhash), sz)));
-	new->alloc_log2 = orig->alloc_log2 + 1;
-	new->free = INITIAL_FREE(new->alloc_log2);
-	memset(new->data, 0, sizeof(struct spanhash) * sz);
+	new_spanhash->alloc_log2 = orig->alloc_log2 + 1;
+	new_spanhash->free = INITIAL_FREE(new_spanhash->alloc_log2);
+	memset(new_spanhash->data, 0, sizeof(struct spanhash) * sz);
 	for (i = 0; i < osz; i++) {
 		struct spanhash *o = &(orig->data[i]);
 		int bucket;
@@ -65,11 +65,11 @@ static struct spanhash_top *spanhash_rehash(struct spanhash_top *orig)
 			continue;
 		bucket = o->hashval & (sz - 1);
 		while (1) {
-			struct spanhash *h = &(new->data[bucket++]);
+			struct spanhash *h = &(new_spanhash->data[bucket++]);
 			if (!h->cnt) {
 				h->hashval = o->hashval;
 				h->cnt = o->cnt;
-				new->free--;
+				new_spanhash->free--;
 				break;
 			}
 			if (sz <= bucket)
@@ -77,7 +77,7 @@ static struct spanhash_top *spanhash_rehash(struct spanhash_top *orig)
 		}
 	}
 	free(orig);
-	return new;
+	return new_spanhash;
 }
 
 static struct spanhash_top *add_spanhash(struct spanhash_top *top,
diff --git a/entry.c b/entry.c
index 30211447ac..6c33112aea 100644
--- a/entry.c
+++ b/entry.c
@@ -85,12 +85,12 @@ static int create_file(const char *path, unsigned int mode)
 static void *read_blob_entry(const struct cache_entry *ce, unsigned long *size)
 {
 	enum object_type type;
-	void *new = read_sha1_file(ce->oid.hash, &type, size);
+	void *blob_data = read_sha1_file(ce->oid.hash, &type, size);
 
-	if (new) {
+	if (blob_data) {
 		if (type == OBJ_BLOB)
-			return new;
-		free(new);
+			return blob_data;
+		free(blob_data);
 	}
 	return NULL;
 }
@@ -256,7 +256,7 @@ static int write_entry(struct cache_entry *ce,
 	unsigned int ce_mode_s_ifmt = ce->ce_mode & S_IFMT;
 	struct delayed_checkout *dco = state->delayed_checkout;
 	int fd, ret, fstat_done = 0;
-	char *new;
+	char *new_blob;
 	struct strbuf buf = STRBUF_INIT;
 	unsigned long size;
 	ssize_t wrote;
@@ -276,8 +276,8 @@ static int write_entry(struct cache_entry *ce,
 
 	switch (ce_mode_s_ifmt) {
 	case S_IFLNK:
-		new = read_blob_entry(ce, &size);
-		if (!new)
+		new_blob = read_blob_entry(ce, &size);
+		if (!new_blob)
 			return error("unable to read sha1 file of %s (%s)",
 				     path, oid_to_hex(&ce->oid));
 
@@ -288,8 +288,8 @@ static int write_entry(struct cache_entry *ce,
 		if (!has_symlinks || to_tempfile)
 			goto write_file_entry;
 
-		ret = symlink(new, path);
-		free(new);
+		ret = symlink(new_blob, path);
+		free(new_blob);
 		if (ret)
 			return error_errno("unable to create symlink %s", path);
 		break;
@@ -300,11 +300,11 @@ static int write_entry(struct cache_entry *ce,
 		 * bother reading it at all.
 		 */
 		if (dco && dco->state == CE_RETRY) {
-			new = NULL;
+			new_blob = NULL;
 			size = 0;
 		} else {
-			new = read_blob_entry(ce, &size);
-			if (!new)
+			new_blob = read_blob_entry(ce, &size);
+			if (!new_blob)
 				return error("unable to read sha1 file of %s (%s)",
 					     path, oid_to_hex(&ce->oid));
 		}
@@ -313,18 +313,18 @@ static int write_entry(struct cache_entry *ce,
 		 * Convert from git internal format to working tree format
 		 */
 		if (dco && dco->state != CE_NO_DELAY) {
-			ret = async_convert_to_working_tree(ce->name, new,
+			ret = async_convert_to_working_tree(ce->name, new_blob,
 							    size, &buf, dco);
 			if (ret && string_list_has_string(&dco->paths, ce->name)) {
-				free(new);
+				free(new_blob);
 				goto delayed;
 			}
 		} else
-			ret = convert_to_working_tree(ce->name, new, size, &buf);
+			ret = convert_to_working_tree(ce->name, new_blob, size, &buf);
 
 		if (ret) {
-			free(new);
-			new = strbuf_detach(&buf, &newsize);
+			free(new_blob);
+			new_blob = strbuf_detach(&buf, &newsize);
 			size = newsize;
 		}
 		/*
@@ -336,15 +336,15 @@ static int write_entry(struct cache_entry *ce,
 	write_file_entry:
 		fd = open_output_fd(path, ce, to_tempfile);
 		if (fd < 0) {
-			free(new);
+			free(new_blob);
 			return error_errno("unable to create file %s", path);
 		}
 
-		wrote = write_in_full(fd, new, size);
+		wrote = write_in_full(fd, new_blob, size);
 		if (!to_tempfile)
 			fstat_done = fstat_output(fd, state, &st);
 		close(fd);
-		free(new);
+		free(new_blob);
 		if (wrote < 0)
 			return error("unable to write file %s", path);
 		break;
diff --git a/environment.c b/environment.c
index de8431e01e..d6dd64662c 100644
--- a/environment.c
+++ b/environment.c
@@ -100,7 +100,7 @@ int ignore_untracked_cache_config;
 /* This is set by setup_git_dir_gently() and/or git_default_config() */
 char *git_work_tree_cfg;
 
-static char *namespace;
+static char *git_namespace;
 
 static const char *super_prefix;
 
@@ -158,8 +158,8 @@ void setup_git_env(void)
 	free(git_replace_ref_base);
 	git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
 							  : "refs/replace/");
-	free(namespace);
-	namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
+	free(git_namespace);
+	git_namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
 	shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
 	if (shallow_file)
 		set_alternate_shallow_file(shallow_file, 0);
@@ -193,9 +193,9 @@ const char *get_git_common_dir(void)
 
 const char *get_git_namespace(void)
 {
-	if (!namespace)
+	if (!git_namespace)
 		BUG("git environment hasn't been setup");
-	return namespace;
+	return git_namespace;
 }
 
 const char *strip_namespace(const char *namespaced_ref)
@@ -249,7 +249,7 @@ char *get_object_directory(void)
 	return the_repository->objectdir;
 }
 
-int odb_mkstemp(struct strbuf *template, const char *pattern)
+int odb_mkstemp(struct strbuf *temp_filename, const char *pattern)
 {
 	int fd;
 	/*
@@ -257,16 +257,16 @@ int odb_mkstemp(struct strbuf *template, const char *pattern)
 	 * restrictive except to remove write permission.
 	 */
 	int mode = 0444;
-	git_path_buf(template, "objects/%s", pattern);
-	fd = git_mkstemp_mode(template->buf, mode);
+	git_path_buf(temp_filename, "objects/%s", pattern);
+	fd = git_mkstemp_mode(temp_filename->buf, mode);
 	if (0 <= fd)
 		return fd;
 
 	/* slow path */
-	/* some mkstemp implementations erase template on failure */
-	git_path_buf(template, "objects/%s", pattern);
-	safe_create_leading_directories(template->buf);
-	return xmkstemp_mode(template->buf, mode);
+	/* some mkstemp implementations erase temp_filename on failure */
+	git_path_buf(temp_filename, "objects/%s", pattern);
+	safe_create_leading_directories(temp_filename->buf);
+	return xmkstemp_mode(temp_filename->buf, mode);
 }
 
 int odb_pack_keep(const char *name)
diff --git a/fast-import.c b/fast-import.c
index 0f818cd932..58ef360da4 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -1096,7 +1096,7 @@ static int store_object(
 	git_zstream s;
 
 	hdrlen = xsnprintf((char *)hdr, sizeof(hdr), "%s %lu",
-			   typename(type), (unsigned long)dat->len) + 1;
+			   type_name(type), (unsigned long)dat->len) + 1;
 	the_hash_algo->init_fn(&c);
 	the_hash_algo->update_fn(&c, hdr, hdrlen);
 	the_hash_algo->update_fn(&c, dat->buf, dat->len);
@@ -2423,7 +2423,7 @@ static void file_change_m(const char *p, struct branch *b)
 		else if (oe) {
 			if (oe->type != OBJ_COMMIT)
 				die("Not a commit (actually a %s): %s",
-					typename(oe->type), command_buf.buf);
+					type_name(oe->type), command_buf.buf);
 		}
 		/*
 		 * Accept the sha1 without checking; it expected to be in
@@ -2450,7 +2450,7 @@ static void file_change_m(const char *p, struct branch *b)
 					command_buf.buf);
 		if (type != expected)
 			die("Not a %s (actually a %s): %s",
-				typename(expected), typename(type),
+				type_name(expected), type_name(type),
 				command_buf.buf);
 	}
 
@@ -2601,14 +2601,14 @@ static void note_change_n(const char *p, struct branch *b, unsigned char *old_fa
 	} else if (oe) {
 		if (oe->type != OBJ_BLOB)
 			die("Not a blob (actually a %s): %s",
-				typename(oe->type), command_buf.buf);
+				type_name(oe->type), command_buf.buf);
 	} else if (!is_null_oid(&oid)) {
 		enum object_type type = sha1_object_info(oid.hash, NULL);
 		if (type < 0)
 			die("Blob not found: %s", command_buf.buf);
 		if (type != OBJ_BLOB)
 			die("Not a blob (actually a %s): %s",
-			    typename(type), command_buf.buf);
+			    type_name(type), command_buf.buf);
 	}
 
 	construct_path_with_fanout(oid_to_hex(&commit_oid), *old_fanout, path);
@@ -2916,7 +2916,7 @@ static void parse_new_tag(const char *arg)
 		    "object %s\n"
 		    "type %s\n"
 		    "tag %s\n",
-		    oid_to_hex(&oid), typename(type), t->name);
+		    oid_to_hex(&oid), type_name(type), t->name);
 	if (tagger)
 		strbuf_addf(&new_data,
 			    "tagger %s\n", tagger);
@@ -2987,10 +2987,10 @@ static void cat_blob(struct object_entry *oe, struct object_id *oid)
 		die("Can't read object %s", oid_to_hex(oid));
 	if (type != OBJ_BLOB)
 		die("Object %s is a %s but a blob was expected.",
-		    oid_to_hex(oid), typename(type));
+		    oid_to_hex(oid), type_name(type));
 	strbuf_reset(&line);
 	strbuf_addf(&line, "%s %s %lu\n", oid_to_hex(oid),
-						typename(type), size);
+						type_name(type), size);
 	cat_blob_write(line.buf, line.len);
 	strbuf_release(&line);
 	cat_blob_write(buf, size);
diff --git a/fsck.c b/fsck.c
index 032699e9ac..5c8c12dde3 100644
--- a/fsck.c
+++ b/fsck.c
@@ -821,7 +821,7 @@ static int fsck_tag_buffer(struct tag *tag, const char *data,
 			ret = report(options, &tag->object,
 				FSCK_MSG_TAG_OBJECT_NOT_TAG,
 				"expected tag got %s",
-			    typename(type));
+			    type_name(type));
 			goto done;
 		}
 	}
diff --git a/git-compat-util.h b/git-compat-util.h
index 68b2ad531e..07e383257b 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -826,8 +826,8 @@ extern ssize_t xpread(int fd, void *buf, size_t len, off_t offset);
 extern int xdup(int fd);
 extern FILE *xfopen(const char *path, const char *mode);
 extern FILE *xfdopen(int fd, const char *mode);
-extern int xmkstemp(char *template);
-extern int xmkstemp_mode(char *template, int mode);
+extern int xmkstemp(char *temp_filename);
+extern int xmkstemp_mode(char *temp_filename, int mode);
 extern char *xgetcwd(void);
 extern FILE *fopen_for_writing(const char *path);
 extern FILE *fopen_or_warn(const char *path, const char *mode);
diff --git a/http-push.c b/http-push.c
index 0913f8ab86..7dcd9daf62 100644
--- a/http-push.c
+++ b/http-push.c
@@ -362,7 +362,7 @@ static void start_put(struct transfer_request *request)
 	git_zstream stream;
 
 	unpacked = read_sha1_file(request->obj->oid.hash, &type, &len);
-	hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(type), len) + 1;
+	hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", type_name(type), len) + 1;
 
 	/* Set it up */
 	git_deflate_init(&stream, zlib_compression_level);
diff --git a/http.c b/http.c
index 31755023a4..8c11156ae3 100644
--- a/http.c
+++ b/http.c
@@ -1260,14 +1260,14 @@ static struct fill_chain *fill_cfg;
 
 void add_fill_function(void *data, int (*fill)(void *))
 {
-	struct fill_chain *new = xmalloc(sizeof(*new));
+	struct fill_chain *new_fill = xmalloc(sizeof(*new_fill));
 	struct fill_chain **linkp = &fill_cfg;
-	new->data = data;
-	new->fill = fill;
-	new->next = NULL;
+	new_fill->data = data;
+	new_fill->fill = fill;
+	new_fill->next = NULL;
 	while (*linkp)
 		linkp = &(*linkp)->next;
-	*linkp = new;
+	*linkp = new_fill;
 }
 
 void fill_active_slots(void)
diff --git a/imap-send.c b/imap-send.c
index 36c7c1b4f6..ffb0a6eca8 100644
--- a/imap-send.c
+++ b/imap-send.c
@@ -1189,11 +1189,11 @@ bail:
  */
 static void lf_to_crlf(struct strbuf *msg)
 {
-	char *new;
+	char *new_msg;
 	size_t i, j;
 	char lastc;
 
-	/* First pass: tally, in j, the size of the new string: */
+	/* First pass: tally, in j, the size of the new_msg string: */
 	for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
 		if (msg->buf[i] == '\n' && lastc != '\r')
 			j++; /* a CR will need to be added here */
@@ -1201,18 +1201,18 @@ static void lf_to_crlf(struct strbuf *msg)
 		j++;
 	}
 
-	new = xmallocz(j);
+	new_msg = xmallocz(j);
 
 	/*
-	 * Second pass: write the new string.  Note that this loop is
+	 * Second pass: write the new_msg string.  Note that this loop is
 	 * otherwise identical to the first pass.
 	 */
 	for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
 		if (msg->buf[i] == '\n' && lastc != '\r')
-			new[j++] = '\r';
-		lastc = new[j++] = msg->buf[i];
+			new_msg[j++] = '\r';
+		lastc = new_msg[j++] = msg->buf[i];
 	}
-	strbuf_attach(msg, new, j, j + 1);
+	strbuf_attach(msg, new_msg, j, j + 1);
 }
 
 /*
diff --git a/line-log.c b/line-log.c
index 545ad0f28b..cdc2257db5 100644
--- a/line-log.c
+++ b/line-log.c
@@ -151,29 +151,29 @@ static void range_set_union(struct range_set *out,
 
 	assert(out->nr == 0);
 	while (i < a->nr || j < b->nr) {
-		struct range *new;
+		struct range *new_range;
 		if (i < a->nr && j < b->nr) {
 			if (ra[i].start < rb[j].start)
-				new = &ra[i++];
+				new_range = &ra[i++];
 			else if (ra[i].start > rb[j].start)
-				new = &rb[j++];
+				new_range = &rb[j++];
 			else if (ra[i].end < rb[j].end)
-				new = &ra[i++];
+				new_range = &ra[i++];
 			else
-				new = &rb[j++];
+				new_range = &rb[j++];
 		} else if (i < a->nr)      /* b exhausted */
-			new = &ra[i++];
+			new_range = &ra[i++];
 		else                       /* a exhausted */
-			new = &rb[j++];
-		if (new->start == new->end)
+			new_range = &rb[j++];
+		if (new_range->start == new_range->end)
 			; /* empty range */
-		else if (!out->nr || out->ranges[out->nr-1].end < new->start) {
+		else if (!out->nr || out->ranges[out->nr-1].end < new_range->start) {
 			range_set_grow(out, 1);
-			out->ranges[out->nr].start = new->start;
-			out->ranges[out->nr].end = new->end;
+			out->ranges[out->nr].start = new_range->start;
+			out->ranges[out->nr].end = new_range->end;
 			out->nr++;
-		} else if (out->ranges[out->nr-1].end < new->end) {
-			out->ranges[out->nr-1].end = new->end;
+		} else if (out->ranges[out->nr-1].end < new_range->end) {
+			out->ranges[out->nr-1].end = new_range->end;
 		}
 	}
 }
@@ -696,18 +696,18 @@ static struct line_log_data *line_log_data_merge(struct line_log_data *a,
 static void add_line_range(struct rev_info *revs, struct commit *commit,
 			   struct line_log_data *range)
 {
-	struct line_log_data *old = NULL;
-	struct line_log_data *new = NULL;
+	struct line_log_data *old_line = NULL;
+	struct line_log_data *new_line = NULL;
 
-	old = lookup_decoration(&revs->line_log_data, &commit->object);
-	if (old && range) {
-		new = line_log_data_merge(old, range);
-		free_line_log_data(old);
+	old_line = lookup_decoration(&revs->line_log_data, &commit->object);
+	if (old_line && range) {
+		new_line = line_log_data_merge(old_line, range);
+		free_line_log_data(old_line);
 	} else if (range)
-		new = line_log_data_copy(range);
+		new_line = line_log_data_copy(range);
 
-	if (new)
-		add_decoration(&revs->line_log_data, &commit->object, new);
+	if (new_line)
+		add_decoration(&revs->line_log_data, &commit->object, new_line);
 }
 
 static void clear_commit_line_range(struct rev_info *revs, struct commit *commit)
@@ -1042,12 +1042,12 @@ static int process_diff_filepair(struct rev_info *rev,
 
 static struct diff_filepair *diff_filepair_dup(struct diff_filepair *pair)
 {
-	struct diff_filepair *new = xmalloc(sizeof(struct diff_filepair));
-	new->one = pair->one;
-	new->two = pair->two;
-	new->one->count++;
-	new->two->count++;
-	return new;
+	struct diff_filepair *new_filepair = xmalloc(sizeof(struct diff_filepair));
+	new_filepair->one = pair->one;
+	new_filepair->two = pair->two;
+	new_filepair->one->count++;
+	new_filepair->two->count++;
+	return new_filepair;
 }
 
 static void free_diffqueues(int n, struct diff_queue_struct *dq)
diff --git a/log-tree.c b/log-tree.c
index 22b2fb6c58..bdf23c5f7b 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -499,7 +499,7 @@ static void show_one_mergetag(struct commit *commit,
 	int status, nth;
 	size_t payload_size, gpg_message_offset;
 
-	hash_object_file(extra->value, extra->len, typename(OBJ_TAG), &oid);
+	hash_object_file(extra->value, extra->len, type_name(OBJ_TAG), &oid);
 	tag = lookup_tag(&oid);
 	if (!tag)
 		return; /* error message already given */
diff --git a/object.c b/object.c
index 9e6f9ff20b..e6ad3f61f0 100644
--- a/object.c
+++ b/object.c
@@ -26,7 +26,7 @@ static const char *object_type_strings[] = {
 	"tag",		/* OBJ_TAG = 4 */
 };
 
-const char *typename(unsigned int type)
+const char *type_name(unsigned int type)
 {
 	if (type >= ARRAY_SIZE(object_type_strings))
 		return NULL;
@@ -166,7 +166,7 @@ void *object_as_type(struct object *obj, enum object_type type, int quiet)
 		if (!quiet)
 			error("object %s is a %s, not a %s",
 			      oid_to_hex(&obj->oid),
-			      typename(obj->type), typename(type));
+			      type_name(obj->type), type_name(type));
 		return NULL;
 	}
 }
@@ -265,7 +265,7 @@ struct object *parse_object(const struct object_id *oid)
 
 	buffer = read_sha1_file(oid->hash, &type, &size);
 	if (buffer) {
-		if (check_sha1_signature(repl, buffer, size, typename(type)) < 0) {
+		if (check_sha1_signature(repl, buffer, size, type_name(type)) < 0) {
 			free(buffer);
 			error("sha1 mismatch %s", sha1_to_hex(repl));
 			return NULL;
diff --git a/object.h b/object.h
index 87563d9056..a5eb263808 100644
--- a/object.h
+++ b/object.h
@@ -53,7 +53,7 @@ struct object {
 	struct object_id oid;
 };
 
-extern const char *typename(unsigned int type);
+extern const char *type_name(unsigned int type);
 extern int type_from_string_gently(const char *str, ssize_t, int gentle);
 #define type_from_string(str) type_from_string_gently(str, -1, 0)
 
diff --git a/pack-check.c b/pack-check.c
index 403a572567..8fc7dd1694 100644
--- a/pack-check.c
+++ b/pack-check.c
@@ -141,7 +141,7 @@ static int verify_packfile(struct packed_git *p,
 			err = error("cannot unpack %s from %s at offset %"PRIuMAX"",
 				    oid_to_hex(entries[i].oid.oid), p->pack_name,
 				    (uintmax_t)entries[i].offset);
-		else if (check_sha1_signature(entries[i].oid.hash, data, size, typename(type)))
+		else if (check_sha1_signature(entries[i].oid.hash, data, size, type_name(type)))
 			err = error("packed %s from %s is corrupt",
 				    oid_to_hex(entries[i].oid.oid), p->pack_name);
 		else if (fn) {
diff --git a/packfile.c b/packfile.c
index 5d07f330c8..7c1a2519fc 100644
--- a/packfile.c
+++ b/packfile.c
@@ -1361,16 +1361,16 @@ int packed_object_info(struct packed_git *p, off_t obj_offset,
 		*oi->disk_sizep = revidx[1].offset - obj_offset;
 	}
 
-	if (oi->typep || oi->typename) {
+	if (oi->typep || oi->type_name) {
 		enum object_type ptot;
 		ptot = packed_to_object_type(p, obj_offset, type, &w_curs,
 					     curpos);
 		if (oi->typep)
 			*oi->typep = ptot;
-		if (oi->typename) {
-			const char *tn = typename(ptot);
+		if (oi->type_name) {
+			const char *tn = type_name(ptot);
 			if (tn)
-				strbuf_addstr(oi->typename, tn);
+				strbuf_addstr(oi->type_name, tn);
 		}
 		if (ptot < 0) {
 			type = OBJ_BAD;
diff --git a/reachable.c b/reachable.c
index 88d7d679da..191ebe3e6a 100644
--- a/reachable.c
+++ b/reachable.c
@@ -94,7 +94,7 @@ static void add_recent_object(const struct object_id *oid,
 		break;
 	default:
 		die("unknown object type for %s: %s",
-		    oid_to_hex(oid), typename(type));
+		    oid_to_hex(oid), type_name(type));
 	}
 
 	if (!obj)
diff --git a/read-cache.c b/read-cache.c
index 28bf0db9d9..977921d90c 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -70,20 +70,20 @@ static void replace_index_entry(struct index_state *istate, int nr, struct cache
 
 void rename_index_entry_at(struct index_state *istate, int nr, const char *new_name)
 {
-	struct cache_entry *old = istate->cache[nr], *new;
+	struct cache_entry *old_entry = istate->cache[nr], *new_entry;
 	int namelen = strlen(new_name);
 
-	new = xmalloc(cache_entry_size(namelen));
-	copy_cache_entry(new, old);
-	new->ce_flags &= ~CE_HASHED;
-	new->ce_namelen = namelen;
-	new->index = 0;
-	memcpy(new->name, new_name, namelen + 1);
+	new_entry = xmalloc(cache_entry_size(namelen));
+	copy_cache_entry(new_entry, old_entry);
+	new_entry->ce_flags &= ~CE_HASHED;
+	new_entry->ce_namelen = namelen;
+	new_entry->index = 0;
+	memcpy(new_entry->name, new_name, namelen + 1);
 
-	cache_tree_invalidate_path(istate, old->name);
-	untracked_cache_remove_from_index(istate, old->name);
+	cache_tree_invalidate_path(istate, old_entry->name);
+	untracked_cache_remove_from_index(istate, old_entry->name);
 	remove_index_entry_at(istate, nr);
-	add_index_entry(istate, new, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
+	add_index_entry(istate, new_entry, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
 }
 
 void fill_stat_data(struct stat_data *sd, struct stat *st)
@@ -615,18 +615,18 @@ static struct cache_entry *create_alias_ce(struct index_state *istate,
 					   struct cache_entry *alias)
 {
 	int len;
-	struct cache_entry *new;
+	struct cache_entry *new_entry;
 
 	if (alias->ce_flags & CE_ADDED)
 		die("Will not add file alias '%s' ('%s' already exists in index)", ce->name, alias->name);
 
 	/* Ok, create the new entry using the name of the existing alias */
 	len = ce_namelen(alias);
-	new = xcalloc(1, cache_entry_size(len));
-	memcpy(new->name, alias->name, len);
-	copy_cache_entry(new, ce);
+	new_entry = xcalloc(1, cache_entry_size(len));
+	memcpy(new_entry->name, alias->name, len);
+	copy_cache_entry(new_entry, ce);
 	save_or_free_index_entry(istate, ce);
-	return new;
+	return new_entry;
 }
 
 void set_object_name_for_intent_to_add_entry(struct cache_entry *ce)
@@ -1379,7 +1379,7 @@ int refresh_index(struct index_state *istate, unsigned int flags,
 	added_fmt = (in_porcelain ? "A\t%s\n" : "%s needs update\n");
 	unmerged_fmt = (in_porcelain ? "U\t%s\n" : "%s: needs merge\n");
 	for (i = 0; i < istate->cache_nr; i++) {
-		struct cache_entry *ce, *new;
+		struct cache_entry *ce, *new_entry;
 		int cache_errno = 0;
 		int changed = 0;
 		int filtered = 0;
@@ -1408,10 +1408,10 @@ int refresh_index(struct index_state *istate, unsigned int flags,
 		if (filtered)
 			continue;
 
-		new = refresh_cache_ent(istate, ce, options, &cache_errno, &changed);
-		if (new == ce)
+		new_entry = refresh_cache_ent(istate, ce, options, &cache_errno, &changed);
+		if (new_entry == ce)
 			continue;
-		if (!new) {
+		if (!new_entry) {
 			const char *fmt;
 
 			if (really && cache_errno == EINVAL) {
@@ -1440,7 +1440,7 @@ int refresh_index(struct index_state *istate, unsigned int flags,
 			continue;
 		}
 
-		replace_index_entry(istate, i, new);
+		replace_index_entry(istate, i, new_entry);
 	}
 	trace_performance_since(start, "refresh index");
 	return has_errors;
diff --git a/ref-filter.c b/ref-filter.c
index f9e25aea7a..99a45beb14 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -529,12 +529,12 @@ static void end_align_handler(struct ref_formatting_stack **stack)
 
 static void align_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state)
 {
-	struct ref_formatting_stack *new;
+	struct ref_formatting_stack *new_stack;
 
 	push_stack_element(&state->stack);
-	new = state->stack;
-	new->at_end = end_align_handler;
-	new->at_end_data = &atomv->atom->u.align;
+	new_stack = state->stack;
+	new_stack->at_end = end_align_handler;
+	new_stack->at_end_data = &atomv->atom->u.align;
 }
 
 static void if_then_else_handler(struct ref_formatting_stack **stack)
@@ -574,16 +574,16 @@ static void if_then_else_handler(struct ref_formatting_stack **stack)
 
 static void if_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state)
 {
-	struct ref_formatting_stack *new;
+	struct ref_formatting_stack *new_stack;
 	struct if_then_else *if_then_else = xcalloc(sizeof(struct if_then_else), 1);
 
 	if_then_else->str = atomv->atom->u.if_then_else.str;
 	if_then_else->cmp_status = atomv->atom->u.if_then_else.cmp_status;
 
 	push_stack_element(&state->stack);
-	new = state->stack;
-	new->at_end = if_then_else_handler;
-	new->at_end_data = if_then_else;
+	new_stack = state->stack;
+	new_stack->at_end = if_then_else_handler;
+	new_stack->at_end_data = if_then_else;
 }
 
 static int is_empty(const char *s)
@@ -769,7 +769,7 @@ static void grab_common_values(struct atom_value *val, int deref, struct object
 		if (deref)
 			name++;
 		if (!strcmp(name, "objecttype"))
-			v->s = typename(obj->type);
+			v->s = type_name(obj->type);
 		else if (!strcmp(name, "objectsize")) {
 			v->value = sz;
 			v->s = xstrfmt("%lu", sz);
@@ -795,7 +795,7 @@ static void grab_tag_values(struct atom_value *val, int deref, struct object *ob
 		if (!strcmp(name, "tag"))
 			v->s = tag->tag;
 		else if (!strcmp(name, "type") && tag->tagged)
-			v->s = typename(tag->tagged->type);
+			v->s = type_name(tag->tagged->type);
 		else if (!strcmp(name, "object") && tag->tagged)
 			v->s = xstrdup(oid_to_hex(&tag->tagged->oid));
 	}
diff --git a/remote.c b/remote.c
index d670eed4c4..a9b4853e65 100644
--- a/remote.c
+++ b/remote.c
@@ -1985,33 +1985,33 @@ static void unmark_and_free(struct commit_list *list, unsigned int mark)
 int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid)
 {
 	struct object *o;
-	struct commit *old, *new;
+	struct commit *old_commit, *new_commit;
 	struct commit_list *list, *used;
 	int found = 0;
 
 	/*
-	 * Both new and old must be commit-ish and new is descendant of
-	 * old.  Otherwise we require --force.
+	 * Both new_commit and old_commit must be commit-ish and new_commit is descendant of
+	 * old_commit.  Otherwise we require --force.
 	 */
 	o = deref_tag(parse_object(old_oid), NULL, 0);
 	if (!o || o->type != OBJ_COMMIT)
 		return 0;
-	old = (struct commit *) o;
+	old_commit = (struct commit *) o;
 
 	o = deref_tag(parse_object(new_oid), NULL, 0);
 	if (!o || o->type != OBJ_COMMIT)
 		return 0;
-	new = (struct commit *) o;
+	new_commit = (struct commit *) o;
 
-	if (parse_commit(new) < 0)
+	if (parse_commit(new_commit) < 0)
 		return 0;
 
 	used = list = NULL;
-	commit_list_insert(new, &list);
+	commit_list_insert(new_commit, &list);
 	while (list) {
-		new = pop_most_recent_commit(&list, TMP_MARK);
-		commit_list_insert(new, &used);
-		if (new == old) {
+		new_commit = pop_most_recent_commit(&list, TMP_MARK);
+		commit_list_insert(new_commit, &used);
+		if (new_commit == old_commit) {
 			found = 1;
 			break;
 		}
diff --git a/sequencer.c b/sequencer.c
index a35a0e60b8..969755b7e0 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -2883,7 +2883,7 @@ int sequencer_pick_revisions(struct replay_opts *opts)
 			if (!lookup_commit_reference_gently(&oid, 1)) {
 				enum object_type type = sha1_object_info(oid.hash, NULL);
 				return error(_("%s: can't cherry-pick a %s"),
-					name, typename(type));
+					name, type_name(type));
 			}
 		} else
 			return error(_("%s: bad revision"), name);
diff --git a/sha1_file.c b/sha1_file.c
index 826d7a0ae3..1b94f39c4c 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -804,7 +804,7 @@ int check_sha1_signature(const unsigned char *sha1, void *map,
 		return -1;
 
 	/* Generate the header */
-	hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(obj_type), size) + 1;
+	hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", type_name(obj_type), size) + 1;
 
 	/* Sha1.. */
 	the_hash_algo->init_fn(&c);
@@ -1094,8 +1094,8 @@ static int parse_sha1_header_extended(const char *hdr, struct object_info *oi,
 	}
 
 	type = type_from_string_gently(type_buf, type_len, 1);
-	if (oi->typename)
-		strbuf_add(oi->typename, type_buf, type_len);
+	if (oi->type_name)
+		strbuf_add(oi->type_name, type_buf, type_len);
 	/*
 	 * Set type to 0 if its an unknown object and
 	 * we're obtaining the type using '--allow-unknown-type'
@@ -1165,7 +1165,7 @@ static int sha1_loose_object_info(const unsigned char *sha1,
 	 * return value implicitly indicates whether the
 	 * object even exists.
 	 */
-	if (!oi->typep && !oi->typename && !oi->sizep && !oi->contentp) {
+	if (!oi->typep && !oi->type_name && !oi->sizep && !oi->contentp) {
 		const char *path;
 		struct stat st;
 		if (stat_sha1_file(sha1, &st, &path) < 0)
@@ -1249,8 +1249,8 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi,
 				*(oi->disk_sizep) = 0;
 			if (oi->delta_base_sha1)
 				hashclr(oi->delta_base_sha1);
-			if (oi->typename)
-				strbuf_addstr(oi->typename, typename(co->type));
+			if (oi->type_name)
+				strbuf_addstr(oi->type_name, type_name(co->type));
 			if (oi->contentp)
 				*oi->contentp = xmemdupz(co->buf, co->size);
 			oi->whence = OI_CACHED;
@@ -1339,7 +1339,7 @@ int pretend_object_file(void *buf, unsigned long len, enum object_type type,
 {
 	struct cached_object *co;
 
-	hash_object_file(buf, len, typename(type), oid);
+	hash_object_file(buf, len, type_name(type), oid);
 	if (has_sha1_file(oid->hash) || find_cached_object(oid->hash))
 		return 0;
 	ALLOC_GROW(cached_objects, cached_object_nr + 1, cached_object_alloc);
@@ -1714,7 +1714,7 @@ int force_object_loose(const struct object_id *oid, time_t mtime)
 	buf = read_object(oid->hash, &type, &len);
 	if (!buf)
 		return error("cannot read sha1_file for %s", oid_to_hex(oid));
-	hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", typename(type), len) + 1;
+	hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %lu", type_name(type), len) + 1;
 	ret = write_loose_object(oid, hdr, hdrlen, buf, len, mtime);
 	free(buf);
 
@@ -1798,9 +1798,9 @@ static int index_mem(struct object_id *oid, void *buf, size_t size,
 	}
 
 	if (write_object)
-		ret = write_object_file(buf, size, typename(type), oid);
+		ret = write_object_file(buf, size, type_name(type), oid);
 	else
-		ret = hash_object_file(buf, size, typename(type), oid);
+		ret = hash_object_file(buf, size, type_name(type), oid);
 	if (re_allocated)
 		free(buf);
 	return ret;
@@ -1820,10 +1820,10 @@ static int index_stream_convert_blob(struct object_id *oid, int fd,
 				 get_conv_flags(flags));
 
 	if (write_object)
-		ret = write_object_file(sbuf.buf, sbuf.len, typename(OBJ_BLOB),
+		ret = write_object_file(sbuf.buf, sbuf.len, type_name(OBJ_BLOB),
 					oid);
 	else
-		ret = hash_object_file(sbuf.buf, sbuf.len, typename(OBJ_BLOB),
+		ret = hash_object_file(sbuf.buf, sbuf.len, type_name(OBJ_BLOB),
 				       oid);
 	strbuf_release(&sbuf);
 	return ret;
@@ -1973,7 +1973,7 @@ void assert_sha1_type(const unsigned char *sha1, enum object_type expect)
 		die("%s is not a valid object", sha1_to_hex(sha1));
 	if (type != expect)
 		die("%s is not a valid '%s' object", sha1_to_hex(sha1),
-		    typename(expect));
+		    type_name(expect));
 }
 
 int for_each_file_in_obj_subdir(unsigned int subdir_nr,
@@ -2218,7 +2218,7 @@ int read_loose_object(const char *path,
 			goto out;
 		}
 		if (check_sha1_signature(expected_sha1, *contents,
-					 *size, typename(*type))) {
+					 *size, type_name(*type))) {
 			error("sha1 mismatch for %s (expected %s)", path,
 			      sha1_to_hex(expected_sha1));
 			free(*contents);
diff --git a/sha1_name.c b/sha1_name.c
index 611c7d24dd..e7c18ffc26 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -381,7 +381,7 @@ static int show_ambiguous_object(const struct object_id *oid, void *data)
 
 	advise("  %s %s%s",
 	       find_unique_abbrev(oid->hash, DEFAULT_ABBREV),
-	       typename(type) ? typename(type) : "unknown type",
+	       type_name(type) ? type_name(type) : "unknown type",
 	       desc.buf);
 
 	strbuf_release(&desc);
@@ -901,8 +901,8 @@ struct object *peel_to_type(const char *name, int namelen,
 			if (name)
 				error("%.*s: expected %s type, but the object "
 				      "dereferences to %s type",
-				      namelen, name, typename(expected_type),
-				      typename(o->type));
+				      namelen, name, type_name(expected_type),
+				      type_name(o->type));
 			return NULL;
 		}
 	}
diff --git a/split-index.c b/split-index.c
index 284d04d67f..3eb8ff1b43 100644
--- a/split-index.c
+++ b/split-index.c
@@ -305,17 +305,17 @@ void save_or_free_index_entry(struct index_state *istate, struct cache_entry *ce
 }
 
 void replace_index_entry_in_base(struct index_state *istate,
-				 struct cache_entry *old,
-				 struct cache_entry *new)
+				 struct cache_entry *old_entry,
+				 struct cache_entry *new_entry)
 {
-	if (old->index &&
+	if (old_entry->index &&
 	    istate->split_index &&
 	    istate->split_index->base &&
-	    old->index <= istate->split_index->base->cache_nr) {
-		new->index = old->index;
-		if (old != istate->split_index->base->cache[new->index - 1])
-			free(istate->split_index->base->cache[new->index - 1]);
-		istate->split_index->base->cache[new->index - 1] = new;
+	    old_entry->index <= istate->split_index->base->cache_nr) {
+		new_entry->index = old_entry->index;
+		if (old_entry != istate->split_index->base->cache[new_entry->index - 1])
+			free(istate->split_index->base->cache[new_entry->index - 1]);
+		istate->split_index->base->cache[new_entry->index - 1] = new_entry;
 	}
 }
 
diff --git a/split-index.h b/split-index.h
index df91c1bda8..43d66826eb 100644
--- a/split-index.h
+++ b/split-index.h
@@ -21,7 +21,7 @@ struct split_index *init_split_index(struct index_state *istate);
 void save_or_free_index_entry(struct index_state *istate, struct cache_entry *ce);
 void replace_index_entry_in_base(struct index_state *istate,
 				 struct cache_entry *old,
-				 struct cache_entry *new);
+				 struct cache_entry *new_entry);
 int read_link_extension(struct index_state *istate,
 			const void *data, unsigned long sz);
 int write_link_extension(struct strbuf *sb,
diff --git a/submodule.c b/submodule.c
index 47ddc9b273..12a2503fda 100644
--- a/submodule.c
+++ b/submodule.c
@@ -590,7 +590,7 @@ void show_submodule_inline_diff(struct diff_options *o, const char *path,
 		struct object_id *one, struct object_id *two,
 		unsigned dirty_submodule)
 {
-	const struct object_id *old = the_hash_algo->empty_tree, *new = the_hash_algo->empty_tree;
+	const struct object_id *old_oid = the_hash_algo->empty_tree, *new_oid = the_hash_algo->empty_tree;
 	struct commit *left = NULL, *right = NULL;
 	struct commit_list *merge_bases = NULL;
 	struct child_process cp = CHILD_PROCESS_INIT;
@@ -605,9 +605,9 @@ void show_submodule_inline_diff(struct diff_options *o, const char *path,
 		goto done;
 
 	if (left)
-		old = one;
+		old_oid = one;
 	if (right)
-		new = two;
+		new_oid = two;
 
 	cp.git_cmd = 1;
 	cp.dir = path;
@@ -630,7 +630,7 @@ void show_submodule_inline_diff(struct diff_options *o, const char *path,
 		argv_array_pushf(&cp.args, "--dst-prefix=%s%s/",
 				 o->b_prefix, path);
 	}
-	argv_array_push(&cp.args, oid_to_hex(old));
+	argv_array_push(&cp.args, oid_to_hex(old_oid));
 	/*
 	 * If the submodule has modified content, we will diff against the
 	 * work tree, under the assumption that the user has asked for the
@@ -638,7 +638,7 @@ void show_submodule_inline_diff(struct diff_options *o, const char *path,
 	 * haven't yet been committed to the submodule yet.
 	 */
 	if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED))
-		argv_array_push(&cp.args, oid_to_hex(new));
+		argv_array_push(&cp.args, oid_to_hex(new_oid));
 
 	prepare_submodule_repo_env(&cp.env_array);
 	if (start_command(&cp))
@@ -831,7 +831,7 @@ static int check_has_commit(const struct object_id *oid, void *data)
 		return 0;
 	default:
 		die(_("submodule entry '%s' (%s) is a %s, not a commit"),
-		    cb->path, oid_to_hex(oid), typename(type));
+		    cb->path, oid_to_hex(oid), type_name(type));
 	}
 }
 
@@ -1578,8 +1578,8 @@ static void submodule_reset_index(const char *path)
  * pass NULL for old or new respectively.
  */
 int submodule_move_head(const char *path,
-			 const char *old,
-			 const char *new,
+			 const char *old_head,
+			 const char *new_head,
 			 unsigned flags)
 {
 	int ret = 0;
@@ -1600,7 +1600,7 @@ int submodule_move_head(const char *path,
 	else
 		error_code_ptr = NULL;
 
-	if (old && !is_submodule_populated_gently(path, error_code_ptr))
+	if (old_head && !is_submodule_populated_gently(path, error_code_ptr))
 		return 0;
 
 	sub = submodule_from_path(&null_oid, path);
@@ -1608,14 +1608,14 @@ int submodule_move_head(const char *path,
 	if (!sub)
 		die("BUG: could not get submodule information for '%s'", path);
 
-	if (old && !(flags & SUBMODULE_MOVE_HEAD_FORCE)) {
+	if (old_head && !(flags & SUBMODULE_MOVE_HEAD_FORCE)) {
 		/* Check if the submodule has a dirty index. */
 		if (submodule_has_dirty_index(sub))
 			return error(_("submodule '%s' has dirty index"), path);
 	}
 
 	if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) {
-		if (old) {
+		if (old_head) {
 			if (!submodule_uses_gitfile(path))
 				absorb_git_dir_into_superproject("", path,
 					ABSORB_GITDIR_RECURSE_SUBMODULES);
@@ -1629,7 +1629,7 @@ int submodule_move_head(const char *path,
 			submodule_reset_index(path);
 		}
 
-		if (old && (flags & SUBMODULE_MOVE_HEAD_FORCE)) {
+		if (old_head && (flags & SUBMODULE_MOVE_HEAD_FORCE)) {
 			char *gitdir = xstrfmt("%s/modules/%s",
 				    get_git_common_dir(), sub->name);
 			connect_work_tree_and_git_dir(path, gitdir);
@@ -1658,9 +1658,9 @@ int submodule_move_head(const char *path,
 		argv_array_push(&cp.args, "-m");
 
 	if (!(flags & SUBMODULE_MOVE_HEAD_FORCE))
-		argv_array_push(&cp.args, old ? old : EMPTY_TREE_SHA1_HEX);
+		argv_array_push(&cp.args, old_head ? old_head : EMPTY_TREE_SHA1_HEX);
 
-	argv_array_push(&cp.args, new ? new : EMPTY_TREE_SHA1_HEX);
+	argv_array_push(&cp.args, new_head ? new_head : EMPTY_TREE_SHA1_HEX);
 
 	if (run_command(&cp)) {
 		ret = -1;
@@ -1668,7 +1668,7 @@ int submodule_move_head(const char *path,
 	}
 
 	if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) {
-		if (new) {
+		if (new_head) {
 			child_process_init(&cp);
 			/* also set the HEAD accordingly */
 			cp.git_cmd = 1;
@@ -1677,7 +1677,7 @@ int submodule_move_head(const char *path,
 
 			prepare_submodule_repo_env(&cp.env_array);
 			argv_array_pushl(&cp.args, "update-ref", "HEAD",
-					 "--no-deref", new, NULL);
+					 "--no-deref", new_head, NULL);
 
 			if (run_command(&cp)) {
 				ret = -1;
diff --git a/submodule.h b/submodule.h
index b9b7ef0030..9589f13127 100644
--- a/submodule.h
+++ b/submodule.h
@@ -117,7 +117,7 @@ int submodule_to_gitdir(struct strbuf *buf, const char *submodule);
 #define SUBMODULE_MOVE_HEAD_FORCE   (1<<1)
 extern int submodule_move_head(const char *path,
 			       const char *old,
-			       const char *new,
+			       const char *new_head,
 			       unsigned flags);
 
 /*
diff --git a/tag.c b/tag.c
index fcbe012f7a..66210fd477 100644
--- a/tag.c
+++ b/tag.c
@@ -47,7 +47,7 @@ int gpg_verify_tag(const struct object_id *oid, const char *name_to_report,
 				name_to_report ?
 				name_to_report :
 				find_unique_abbrev(oid->hash, DEFAULT_ABBREV),
-				typename(type));
+				type_name(type));
 
 	buf = read_sha1_file(oid->hash, &type, &size);
 	if (!buf)
diff --git a/tempfile.c b/tempfile.c
index 5fdafdd2d2..139ecd97f8 100644
--- a/tempfile.c
+++ b/tempfile.c
@@ -165,11 +165,11 @@ struct tempfile *register_tempfile(const char *path)
 	return tempfile;
 }
 
-struct tempfile *mks_tempfile_sm(const char *template, int suffixlen, int mode)
+struct tempfile *mks_tempfile_sm(const char *filename_template, int suffixlen, int mode)
 {
 	struct tempfile *tempfile = new_tempfile();
 
-	strbuf_add_absolute_path(&tempfile->filename, template);
+	strbuf_add_absolute_path(&tempfile->filename, filename_template);
 	tempfile->fd = git_mkstemps_mode(tempfile->filename.buf, suffixlen, mode);
 	if (tempfile->fd < 0) {
 		deactivate_tempfile(tempfile);
@@ -179,7 +179,7 @@ struct tempfile *mks_tempfile_sm(const char *template, int suffixlen, int mode)
 	return tempfile;
 }
 
-struct tempfile *mks_tempfile_tsm(const char *template, int suffixlen, int mode)
+struct tempfile *mks_tempfile_tsm(const char *filename_template, int suffixlen, int mode)
 {
 	struct tempfile *tempfile = new_tempfile();
 	const char *tmpdir;
@@ -188,7 +188,7 @@ struct tempfile *mks_tempfile_tsm(const char *template, int suffixlen, int mode)
 	if (!tmpdir)
 		tmpdir = "/tmp";
 
-	strbuf_addf(&tempfile->filename, "%s/%s", tmpdir, template);
+	strbuf_addf(&tempfile->filename, "%s/%s", tmpdir, filename_template);
 	tempfile->fd = git_mkstemps_mode(tempfile->filename.buf, suffixlen, mode);
 	if (tempfile->fd < 0) {
 		deactivate_tempfile(tempfile);
@@ -198,12 +198,12 @@ struct tempfile *mks_tempfile_tsm(const char *template, int suffixlen, int mode)
 	return tempfile;
 }
 
-struct tempfile *xmks_tempfile_m(const char *template, int mode)
+struct tempfile *xmks_tempfile_m(const char *filename_template, int mode)
 {
 	struct tempfile *tempfile;
 	struct strbuf full_template = STRBUF_INIT;
 
-	strbuf_add_absolute_path(&full_template, template);
+	strbuf_add_absolute_path(&full_template, filename_template);
 	tempfile = mks_tempfile_m(full_template.buf, mode);
 	if (!tempfile)
 		die_errno("Unable to create temporary file '%s'",
diff --git a/tempfile.h b/tempfile.h
index 450908b2e0..8959c5f1b5 100644
--- a/tempfile.h
+++ b/tempfile.h
@@ -135,58 +135,58 @@ extern struct tempfile *register_tempfile(const char *path);
  */
 
 /* See "mks_tempfile functions" above. */
-extern struct tempfile *mks_tempfile_sm(const char *template,
+extern struct tempfile *mks_tempfile_sm(const char *filename_template,
 					int suffixlen, int mode);
 
 /* See "mks_tempfile functions" above. */
-static inline struct tempfile *mks_tempfile_s(const char *template,
+static inline struct tempfile *mks_tempfile_s(const char *filename_template,
 					      int suffixlen)
 {
-	return mks_tempfile_sm(template, suffixlen, 0600);
+	return mks_tempfile_sm(filename_template, suffixlen, 0600);
 }
 
 /* See "mks_tempfile functions" above. */
-static inline struct tempfile *mks_tempfile_m(const char *template, int mode)
+static inline struct tempfile *mks_tempfile_m(const char *filename_template, int mode)
 {
-	return mks_tempfile_sm(template, 0, mode);
+	return mks_tempfile_sm(filename_template, 0, mode);
 }
 
 /* See "mks_tempfile functions" above. */
-static inline struct tempfile *mks_tempfile(const char *template)
+static inline struct tempfile *mks_tempfile(const char *filename_template)
 {
-	return mks_tempfile_sm(template, 0, 0600);
+	return mks_tempfile_sm(filename_template, 0, 0600);
 }
 
 /* See "mks_tempfile functions" above. */
-extern struct tempfile *mks_tempfile_tsm(const char *template,
+extern struct tempfile *mks_tempfile_tsm(const char *filename_template,
 					 int suffixlen, int mode);
 
 /* See "mks_tempfile functions" above. */
-static inline struct tempfile *mks_tempfile_ts(const char *template,
+static inline struct tempfile *mks_tempfile_ts(const char *filename_template,
 					       int suffixlen)
 {
-	return mks_tempfile_tsm(template, suffixlen, 0600);
+	return mks_tempfile_tsm(filename_template, suffixlen, 0600);
 }
 
 /* See "mks_tempfile functions" above. */
-static inline struct tempfile *mks_tempfile_tm(const char *template, int mode)
+static inline struct tempfile *mks_tempfile_tm(const char *filename_template, int mode)
 {
-	return mks_tempfile_tsm(template, 0, mode);
+	return mks_tempfile_tsm(filename_template, 0, mode);
 }
 
 /* See "mks_tempfile functions" above. */
-static inline struct tempfile *mks_tempfile_t(const char *template)
+static inline struct tempfile *mks_tempfile_t(const char *filename_template)
 {
-	return mks_tempfile_tsm(template, 0, 0600);
+	return mks_tempfile_tsm(filename_template, 0, 0600);
 }
 
 /* See "mks_tempfile functions" above. */
-extern struct tempfile *xmks_tempfile_m(const char *template, int mode);
+extern struct tempfile *xmks_tempfile_m(const char *filename_template, int mode);
 
 /* See "mks_tempfile functions" above. */
-static inline struct tempfile *xmks_tempfile(const char *template)
+static inline struct tempfile *xmks_tempfile(const char *filename_template)
 {
-	return xmks_tempfile_m(template, 0600);
+	return xmks_tempfile_m(filename_template, 0600);
 }
 
 /*
diff --git a/trailer.c b/trailer.c
index 3ba157ed0d..c508c9b752 100644
--- a/trailer.c
+++ b/trailer.c
@@ -174,12 +174,12 @@ static void print_all(FILE *outfile, struct list_head *head,
 
 static struct trailer_item *trailer_from_arg(struct arg_item *arg_tok)
 {
-	struct trailer_item *new = xcalloc(sizeof(*new), 1);
-	new->token = arg_tok->token;
-	new->value = arg_tok->value;
+	struct trailer_item *new_item = xcalloc(sizeof(*new_item), 1);
+	new_item->token = arg_tok->token;
+	new_item->value = arg_tok->value;
 	arg_tok->token = arg_tok->value = NULL;
 	free_arg_item(arg_tok);
-	return new;
+	return new_item;
 }
 
 static void add_arg_to_input_list(struct trailer_item *on_tok,
@@ -666,30 +666,30 @@ static void parse_trailer(struct strbuf *tok, struct strbuf *val,
 static struct trailer_item *add_trailer_item(struct list_head *head, char *tok,
 					     char *val)
 {
-	struct trailer_item *new = xcalloc(sizeof(*new), 1);
-	new->token = tok;
-	new->value = val;
-	list_add_tail(&new->list, head);
-	return new;
+	struct trailer_item *new_item = xcalloc(sizeof(*new_item), 1);
+	new_item->token = tok;
+	new_item->value = val;
+	list_add_tail(&new_item->list, head);
+	return new_item;
 }
 
 static void add_arg_item(struct list_head *arg_head, char *tok, char *val,
 			 const struct conf_info *conf,
 			 const struct new_trailer_item *new_trailer_item)
 {
-	struct arg_item *new = xcalloc(sizeof(*new), 1);
-	new->token = tok;
-	new->value = val;
-	duplicate_conf(&new->conf, conf);
+	struct arg_item *new_item = xcalloc(sizeof(*new_item), 1);
+	new_item->token = tok;
+	new_item->value = val;
+	duplicate_conf(&new_item->conf, conf);
 	if (new_trailer_item) {
 		if (new_trailer_item->where != WHERE_DEFAULT)
-			new->conf.where = new_trailer_item->where;
+			new_item->conf.where = new_trailer_item->where;
 		if (new_trailer_item->if_exists != EXISTS_DEFAULT)
-			new->conf.if_exists = new_trailer_item->if_exists;
+			new_item->conf.if_exists = new_trailer_item->if_exists;
 		if (new_trailer_item->if_missing != MISSING_DEFAULT)
-			new->conf.if_missing = new_trailer_item->if_missing;
+			new_item->conf.if_missing = new_trailer_item->if_missing;
 	}
-	list_add_tail(&new->list, arg_head);
+	list_add_tail(&new_item->list, arg_head);
 }
 
 static void process_command_line_args(struct list_head *arg_head,
@@ -1000,7 +1000,7 @@ static struct tempfile *trailers_tempfile;
 static FILE *create_in_place_tempfile(const char *file)
 {
 	struct stat st;
-	struct strbuf template = STRBUF_INIT;
+	struct strbuf filename_template = STRBUF_INIT;
 	const char *tail;
 	FILE *outfile;
 
@@ -1014,11 +1014,11 @@ static FILE *create_in_place_tempfile(const char *file)
 	/* Create temporary file in the same directory as the original */
 	tail = strrchr(file, '/');
 	if (tail != NULL)
-		strbuf_add(&template, file, tail - file + 1);
-	strbuf_addstr(&template, "git-interpret-trailers-XXXXXX");
+		strbuf_add(&filename_template, file, tail - file + 1);
+	strbuf_addstr(&filename_template, "git-interpret-trailers-XXXXXX");
 
-	trailers_tempfile = xmks_tempfile_m(template.buf, st.st_mode);
-	strbuf_release(&template);
+	trailers_tempfile = xmks_tempfile_m(filename_template.buf, st.st_mode);
+	strbuf_release(&filename_template);
 	outfile = fdopen_tempfile(trailers_tempfile, "w");
 	if (!outfile)
 		die_errno(_("could not open temporary file"));
diff --git a/unpack-trees.c b/unpack-trees.c
index c9f6e314d5..d5685891a5 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -195,10 +195,10 @@ static int do_add_entry(struct unpack_trees_options *o, struct cache_entry *ce,
 static struct cache_entry *dup_entry(const struct cache_entry *ce)
 {
 	unsigned int size = ce_size(ce);
-	struct cache_entry *new = xmalloc(size);
+	struct cache_entry *new_entry = xmalloc(size);
 
-	memcpy(new, ce, size);
-	return new;
+	memcpy(new_entry, ce, size);
+	return new_entry;
 }
 
 static void add_entry(struct unpack_trees_options *o,
diff --git a/walker.c b/walker.c
index 5d4d3733f7..dffb9c8e37 100644
--- a/walker.c
+++ b/walker.c
@@ -22,7 +22,7 @@ void walker_say(struct walker *walker, const char *fmt, ...)
 static void report_missing(const struct object *obj)
 {
 	fprintf(stderr, "Cannot obtain needed %s %s\n",
-		obj->type ? typename(obj->type): "object",
+		obj->type ? type_name(obj->type): "object",
 		oid_to_hex(&obj->oid));
 	if (!is_null_oid(&current_commit_oid))
 		fprintf(stderr, "while processing commit %s.\n",
@@ -134,7 +134,7 @@ static int process_object(struct walker *walker, struct object *obj)
 	}
 	return error("Unable to determine requirements "
 		     "of type %s for %s",
-		     typename(obj->type), oid_to_hex(&obj->oid));
+		     type_name(obj->type), oid_to_hex(&obj->oid));
 }
 
 static int process(struct walker *walker, struct object *obj)
diff --git a/wrapper.c b/wrapper.c
index d20356a776..1fd5e33ea8 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -445,21 +445,21 @@ FILE *fopen_or_warn(const char *path, const char *mode)
 	return NULL;
 }
 
-int xmkstemp(char *template)
+int xmkstemp(char *filename_template)
 {
 	int fd;
 	char origtemplate[PATH_MAX];
-	strlcpy(origtemplate, template, sizeof(origtemplate));
+	strlcpy(origtemplate, filename_template, sizeof(origtemplate));
 
-	fd = mkstemp(template);
+	fd = mkstemp(filename_template);
 	if (fd < 0) {
 		int saved_errno = errno;
 		const char *nonrelative_template;
 
-		if (strlen(template) != strlen(origtemplate))
-			template = origtemplate;
+		if (strlen(filename_template) != strlen(origtemplate))
+			filename_template = origtemplate;
 
-		nonrelative_template = absolute_path(template);
+		nonrelative_template = absolute_path(filename_template);
 		errno = saved_errno;
 		die_errno("Unable to create temporary file '%s'",
 			nonrelative_template);
@@ -481,7 +481,7 @@ int git_mkstemps_mode(char *pattern, int suffix_len, int mode)
 	static const int num_letters = 62;
 	uint64_t value;
 	struct timeval tv;
-	char *template;
+	char *filename_template;
 	size_t len;
 	int fd, count;
 
@@ -503,16 +503,16 @@ int git_mkstemps_mode(char *pattern, int suffix_len, int mode)
 	 */
 	gettimeofday(&tv, NULL);
 	value = ((size_t)(tv.tv_usec << 16)) ^ tv.tv_sec ^ getpid();
-	template = &pattern[len - 6 - suffix_len];
+	filename_template = &pattern[len - 6 - suffix_len];
 	for (count = 0; count < TMP_MAX; ++count) {
 		uint64_t v = value;
 		/* Fill in the random bits. */
-		template[0] = letters[v % num_letters]; v /= num_letters;
-		template[1] = letters[v % num_letters]; v /= num_letters;
-		template[2] = letters[v % num_letters]; v /= num_letters;
-		template[3] = letters[v % num_letters]; v /= num_letters;
-		template[4] = letters[v % num_letters]; v /= num_letters;
-		template[5] = letters[v % num_letters]; v /= num_letters;
+		filename_template[0] = letters[v % num_letters]; v /= num_letters;
+		filename_template[1] = letters[v % num_letters]; v /= num_letters;
+		filename_template[2] = letters[v % num_letters]; v /= num_letters;
+		filename_template[3] = letters[v % num_letters]; v /= num_letters;
+		filename_template[4] = letters[v % num_letters]; v /= num_letters;
+		filename_template[5] = letters[v % num_letters]; v /= num_letters;
 
 		fd = open(pattern, O_CREAT | O_EXCL | O_RDWR, mode);
 		if (fd >= 0)
@@ -541,21 +541,21 @@ int git_mkstemp_mode(char *pattern, int mode)
 	return git_mkstemps_mode(pattern, 0, mode);
 }
 
-int xmkstemp_mode(char *template, int mode)
+int xmkstemp_mode(char *filename_template, int mode)
 {
 	int fd;
 	char origtemplate[PATH_MAX];
-	strlcpy(origtemplate, template, sizeof(origtemplate));
+	strlcpy(origtemplate, filename_template, sizeof(origtemplate));
 
-	fd = git_mkstemp_mode(template, mode);
+	fd = git_mkstemp_mode(filename_template, mode);
 	if (fd < 0) {
 		int saved_errno = errno;
 		const char *nonrelative_template;
 
-		if (!template[0])
-			template = origtemplate;
+		if (!filename_template[0])
+			filename_template = origtemplate;
 
-		nonrelative_template = absolute_path(template);
+		nonrelative_template = absolute_path(filename_template);
 		errno = saved_errno;
 		die_errno("Unable to create temporary file '%s'",
 			nonrelative_template);