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-rw-r--r--Documentation/diff-options.txt3
-rw-r--r--Documentation/merge-strategies.txt4
-rw-r--r--diff.c31
-rw-r--r--diff.h2
-rw-r--r--merge-recursive.c6
-rw-r--r--merge-recursive.h1
6 files changed, 41 insertions, 6 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index e954af0ad6..bfd0b571e2 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -207,6 +207,7 @@ endif::git-format-patch[]
digits can be specified with `--abbrev=<n>`.
-B[<n>][/<m>]::
+--break-rewrites[=[<n>][/<m>]]::
Break complete rewrite changes into pairs of delete and
create. This serves two purposes:
+
@@ -229,6 +230,7 @@ eligible for being picked up as a possible source of a rename to
another file.
-M[<n>]::
+--detect-renames[=<n>]::
ifndef::git-log[]
Detect renames.
endif::git-log[]
@@ -244,6 +246,7 @@ endif::git-log[]
hasn't changed.
-C[<n>]::
+--detect-copies[=<n>]::
Detect copies as well as renames. See also `--find-copies-harder`.
If `n` is specified, it has the same meaning as for `-M<n>`.
diff --git a/Documentation/merge-strategies.txt b/Documentation/merge-strategies.txt
index 9cf88e2bb5..595a3cf1a7 100644
--- a/Documentation/merge-strategies.txt
+++ b/Documentation/merge-strategies.txt
@@ -74,6 +74,10 @@ no-renormalize;;
Disables the `renormalize` option. This overrides the
`merge.renormalize` configuration variable.
+rename-threshold=<n>;;
+ Controls the similarity threshold used for rename detection.
+ See also linkgit:git-diff[1] `-M`.
+
subtree[=<path>];;
This option is a more advanced form of 'subtree' strategy, where
the strategy makes a guess on how two trees must be shifted to
diff --git a/diff.c b/diff.c
index ba57bfab17..d1c6b91982 100644
--- a/diff.c
+++ b/diff.c
@@ -3140,16 +3140,19 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
return stat_opt(options, av);
/* renames options */
- else if (!prefixcmp(arg, "-B")) {
+ else if (!prefixcmp(arg, "-B") || !prefixcmp(arg, "--break-rewrites=") ||
+ !strcmp(arg, "--break-rewrites")) {
if ((options->break_opt = diff_scoreopt_parse(arg)) == -1)
return -1;
}
- else if (!prefixcmp(arg, "-M")) {
+ else if (!prefixcmp(arg, "-M") || !prefixcmp(arg, "--detect-renames=") ||
+ !strcmp(arg, "--detect-renames")) {
if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
return -1;
options->detect_rename = DIFF_DETECT_RENAME;
}
- else if (!prefixcmp(arg, "-C")) {
+ else if (!prefixcmp(arg, "-C") || !prefixcmp(arg, "--detect-copies=") ||
+ !strcmp(arg, "--detect-copies")) {
if (options->detect_rename == DIFF_DETECT_COPY)
DIFF_OPT_SET(options, FIND_COPIES_HARDER);
if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
@@ -3323,7 +3326,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
return 1;
}
-static int parse_num(const char **cp_p)
+int parse_rename_score(const char **cp_p)
{
unsigned long num, scale;
int ch, dot;
@@ -3366,10 +3369,26 @@ static int diff_scoreopt_parse(const char *opt)
if (*opt++ != '-')
return -1;
cmd = *opt++;
+ if (cmd == '-') {
+ /* convert the long-form arguments into short-form versions */
+ if (!prefixcmp(opt, "break-rewrites")) {
+ opt += strlen("break-rewrites");
+ if (*opt == 0 || *opt++ == '=')
+ cmd = 'B';
+ } else if (!prefixcmp(opt, "detect-copies")) {
+ opt += strlen("detect-copies");
+ if (*opt == 0 || *opt++ == '=')
+ cmd = 'C';
+ } else if (!prefixcmp(opt, "detect-renames")) {
+ opt += strlen("detect-renames");
+ if (*opt == 0 || *opt++ == '=')
+ cmd = 'M';
+ }
+ }
if (cmd != 'M' && cmd != 'C' && cmd != 'B')
return -1; /* that is not a -M, -C nor -B option */
- opt1 = parse_num(&opt);
+ opt1 = parse_rename_score(&opt);
if (cmd != 'B')
opt2 = 0;
else {
@@ -3379,7 +3398,7 @@ static int diff_scoreopt_parse(const char *opt)
return -1; /* we expect -B80/99 or -B80 */
else {
opt++;
- opt2 = parse_num(&opt);
+ opt2 = parse_rename_score(&opt);
}
}
if (*opt != 0)
diff --git a/diff.h b/diff.h
index 1fd44f5e47..0083d92438 100644
--- a/diff.h
+++ b/diff.h
@@ -315,4 +315,6 @@ extern size_t fill_textconv(struct userdiff_driver *driver,
extern struct userdiff_driver *get_textconv(struct diff_filespec *one);
+extern int parse_rename_score(const char **cp_p);
+
#endif /* DIFF_H */
diff --git a/merge-recursive.c b/merge-recursive.c
index 325a97bf31..875859f68e 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -334,6 +334,7 @@ static struct string_list *get_renames(struct merge_options *o,
opts.rename_limit = o->merge_rename_limit >= 0 ? o->merge_rename_limit :
o->diff_rename_limit >= 0 ? o->diff_rename_limit :
500;
+ opts.rename_score = o->rename_score;
opts.warn_on_too_large_rename = 1;
opts.output_format = DIFF_FORMAT_NO_OUTPUT;
if (diff_setup_done(&opts) < 0)
@@ -1576,6 +1577,11 @@ int parse_merge_opt(struct merge_options *o, const char *s)
o->renormalize = 1;
else if (!strcmp(s, "no-renormalize"))
o->renormalize = 0;
+ else if (!prefixcmp(s, "rename-threshold=")) {
+ const char *score = s + strlen("rename-threshold=");
+ if ((o->rename_score = parse_rename_score(&score)) == -1 || *score != 0)
+ return -1;
+ }
else
return -1;
return 0;
diff --git a/merge-recursive.h b/merge-recursive.h
index 2eb5d1aad5..c8135b0ec7 100644
--- a/merge-recursive.h
+++ b/merge-recursive.h
@@ -19,6 +19,7 @@ struct merge_options {
int verbosity;
int diff_rename_limit;
int merge_rename_limit;
+ int rename_score;
int call_depth;
struct strbuf obuf;
struct string_list current_file_set;