merge-recursive: option to specify rename threshold
The recursive merge strategy turns on rename detection but leaves the rename threshold at the default. Add a strategy option to allow the user to specify a rename threshold to use. Signed-off-by: Kevin Ballard <kevin@sb.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -74,6 +74,10 @@ no-renormalize;;
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Disables the `renormalize` option. This overrides the
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`merge.renormalize` configuration variable.
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rename-threshold=<n>;;
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Controls the similarity threshold used for rename detection.
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See also linkgit:git-diff[1] `-M`.
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subtree[=path];;
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This option is a more advanced form of 'subtree' strategy, where
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the strategy makes a guess on how two trees must be shifted to
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6
diff.c
6
diff.c
@ -3219,7 +3219,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
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return 1;
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}
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static int parse_num(const char **cp_p)
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int parse_rename_score(const char **cp_p)
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{
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unsigned long num, scale;
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int ch, dot;
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@ -3265,7 +3265,7 @@ static int diff_scoreopt_parse(const char *opt)
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if (cmd != 'M' && cmd != 'C' && cmd != 'B')
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return -1; /* that is not a -M, -C nor -B option */
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opt1 = parse_num(&opt);
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opt1 = parse_rename_score(&opt);
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if (cmd != 'B')
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opt2 = 0;
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else {
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@ -3275,7 +3275,7 @@ static int diff_scoreopt_parse(const char *opt)
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return -1; /* we expect -B80/99 or -B80 */
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else {
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opt++;
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opt2 = parse_num(&opt);
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opt2 = parse_rename_score(&opt);
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}
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}
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if (*opt != 0)
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2
diff.h
2
diff.h
@ -301,4 +301,6 @@ extern size_t fill_textconv(struct userdiff_driver *driver,
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extern struct userdiff_driver *get_textconv(struct diff_filespec *one);
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extern int parse_rename_score(const char **cp_p);
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#endif /* DIFF_H */
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@ -339,6 +339,7 @@ static struct string_list *get_renames(struct merge_options *o,
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opts.rename_limit = o->merge_rename_limit >= 0 ? o->merge_rename_limit :
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o->diff_rename_limit >= 0 ? o->diff_rename_limit :
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500;
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opts.rename_score = o->rename_score;
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opts.warn_on_too_large_rename = 1;
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opts.output_format = DIFF_FORMAT_NO_OUTPUT;
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if (diff_setup_done(&opts) < 0)
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@ -1525,6 +1526,11 @@ int parse_merge_opt(struct merge_options *o, const char *s)
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o->renormalize = 1;
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else if (!strcmp(s, "no-renormalize"))
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o->renormalize = 0;
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else if (!prefixcmp(s, "rename-threshold=")) {
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const char *score = s + strlen("rename-threshold=");
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if ((o->rename_score = parse_rename_score(&score)) == -1 || *score != 0)
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return -1;
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}
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else
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return -1;
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return 0;
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@ -19,6 +19,7 @@ struct merge_options {
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int verbosity;
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int diff_rename_limit;
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int merge_rename_limit;
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int rename_score;
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int call_depth;
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struct strbuf obuf;
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struct string_list current_file_set;
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