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-rw-r--r--diff.c66
1 files changed, 48 insertions, 18 deletions
diff --git a/diff.c b/diff.c
index 156fec4470..0b1b5e7af8 100644
--- a/diff.c
+++ b/diff.c
@@ -1264,6 +1264,7 @@ static char *pprint_rename(const char *a, const char *b)
const char *new = b;
struct strbuf name = STRBUF_INIT;
int pfx_length, sfx_length;
+ int pfx_adjust_for_slash;
int len_a = strlen(a);
int len_b = strlen(b);
int a_midlen, b_midlen;
@@ -1290,7 +1291,18 @@ static char *pprint_rename(const char *a, const char *b)
old = a + len_a;
new = b + len_b;
sfx_length = 0;
- while (a <= old && b <= new && *old == *new) {
+ /*
+ * If there is a common prefix, it must end in a slash. In
+ * that case we let this loop run 1 into the prefix to see the
+ * same slash.
+ *
+ * If there is no common prefix, we cannot do this as it would
+ * 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--;
@@ -1553,7 +1565,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
* Binary files are displayed with "Bin XXX -> YYY bytes"
* instead of the change count and graph. This part is treated
* similarly to the graph part, except that it is not
- * "scaled". If total width is too small to accomodate the
+ * "scaled". If total width is too small to accommodate the
* guaranteed minimum width of the filename part and the
* separators and this message, this message will "overflow"
* making the line longer than the maximum width.
@@ -2243,6 +2255,7 @@ static void builtin_diff(const char *name_a,
const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
show_submodule_summary(o->file, one ? one->path : two->path,
+ line_prefix,
one->sha1, two->sha1, two->dirty_submodule,
meta, del, add, reset);
return;
@@ -2664,6 +2677,14 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
int diff_populate_filespec(struct diff_filespec *s, int size_only)
{
int err = 0;
+ /*
+ * demote FAIL to WARN to allow inspecting the situation
+ * instead of refusing.
+ */
+ enum safe_crlf crlf_warn = (safe_crlf == SAFE_CRLF_FAIL
+ ? SAFE_CRLF_WARN
+ : safe_crlf);
+
if (!DIFF_FILE_VALID(s))
die("internal error: asking to populate invalid file.");
if (S_ISDIR(s->mode))
@@ -2719,7 +2740,7 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
/*
* Convert from working tree format to canonical git format
*/
- if (convert_to_git(s->path, s->data, s->size, &buf, safe_crlf)) {
+ if (convert_to_git(s->path, s->data, s->size, &buf, crlf_warn)) {
size_t size = 0;
munmap(s->data, s->size);
s->should_munmap = 0;
@@ -3484,6 +3505,11 @@ static int parse_submodule_opt(struct diff_options *options, const char *value)
return 1;
}
+static void enable_patch_output(int *fmt) {
+ *fmt &= ~DIFF_FORMAT_NO_OUTPUT;
+ *fmt |= DIFF_FORMAT_PATCH;
+}
+
int diff_opt_parse(struct diff_options *options, const char **av, int ac)
{
const char *arg = av[0];
@@ -3491,15 +3517,15 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
int argcount;
/* Output format options */
- if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch"))
- options->output_format |= DIFF_FORMAT_PATCH;
- else if (opt_arg(arg, 'U', "unified", &options->context))
- options->output_format |= DIFF_FORMAT_PATCH;
+ if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch")
+ || opt_arg(arg, 'U', "unified", &options->context))
+ enable_patch_output(&options->output_format);
else if (!strcmp(arg, "--raw"))
options->output_format |= DIFF_FORMAT_RAW;
- else if (!strcmp(arg, "--patch-with-raw"))
- options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW;
- else if (!strcmp(arg, "--numstat"))
+ else if (!strcmp(arg, "--patch-with-raw")) {
+ enable_patch_output(&options->output_format);
+ options->output_format |= DIFF_FORMAT_RAW;
+ } else if (!strcmp(arg, "--numstat"))
options->output_format |= DIFF_FORMAT_NUMSTAT;
else if (!strcmp(arg, "--shortstat"))
options->output_format |= DIFF_FORMAT_SHORTSTAT;
@@ -3521,13 +3547,14 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
options->output_format |= DIFF_FORMAT_CHECKDIFF;
else if (!strcmp(arg, "--summary"))
options->output_format |= DIFF_FORMAT_SUMMARY;
- else if (!strcmp(arg, "--patch-with-stat"))
- options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT;
- else if (!strcmp(arg, "--name-only"))
+ else if (!strcmp(arg, "--patch-with-stat")) {
+ enable_patch_output(&options->output_format);
+ options->output_format |= DIFF_FORMAT_DIFFSTAT;
+ } else if (!strcmp(arg, "--name-only"))
options->output_format |= DIFF_FORMAT_NAME;
else if (!strcmp(arg, "--name-status"))
options->output_format |= DIFF_FORMAT_NAME_STATUS;
- else if (!strcmp(arg, "-s"))
+ else if (!strcmp(arg, "-s") || !strcmp(arg, "--no-patch"))
options->output_format |= DIFF_FORMAT_NO_OUTPUT;
else if (!prefixcmp(arg, "--stat"))
/* --stat, --stat-width, --stat-name-width, or --stat-count */
@@ -3580,12 +3607,14 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE);
else if (!strcmp(arg, "--ignore-space-at-eol"))
DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
+ else if (!strcmp(arg, "--ignore-blank-lines"))
+ DIFF_XDL_SET(options, IGNORE_BLANK_LINES);
else if (!strcmp(arg, "--patience"))
options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
else if (!strcmp(arg, "--histogram"))
options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
- else if (!prefixcmp(arg, "--diff-algorithm=")) {
- long value = parse_algorithm_value(arg+17);
+ else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) {
+ long value = parse_algorithm_value(optarg);
if (value < 0)
return error("option diff-algorithm accepts \"myers\", "
"\"minimal\", \"patience\" and \"histogram\"");
@@ -3593,11 +3622,12 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
DIFF_XDL_CLR(options, NEED_MINIMAL);
options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
options->xdl_opts |= value;
+ return argcount;
}
/* flags options */
else if (!strcmp(arg, "--binary")) {
- options->output_format |= DIFF_FORMAT_PATCH;
+ enable_patch_output(&options->output_format);
DIFF_OPT_SET(options, BINARY);
}
else if (!strcmp(arg, "--full-index"))
@@ -4662,7 +4692,7 @@ int diff_result_code(struct diff_options *opt, int status)
{
int result = 0;
- diff_warn_rename_limit("diff.renamelimit",
+ diff_warn_rename_limit("diff.renameLimit",
opt->needed_rename_limit,
opt->degraded_cc_to_c);
if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
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