diff options
| -rw-r--r-- | Documentation/diff-options.txt | 7 | ||||
| -rw-r--r-- | diff.c | 2 |
2 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt index b2a05937f9..0f07c9c4a8 100644 --- a/Documentation/diff-options.txt +++ b/Documentation/diff-options.txt @@ -86,7 +86,7 @@ Detect renames. -C:: - Detect copies as well as renames. + Detect copies as well as renames. See also `--find-copies-harder`. --diff-filter=[ACDMRTUXB*]:: Select only files that are Added (`A`), Copied (`C`), @@ -100,12 +100,13 @@ that matches other criteria, nothing is selected. --find-copies-harder:: - For performance reasons, by default, -C option finds copies only + For performance reasons, by default, `-C` option finds copies only if the original file of the copy was modified in the same changeset. This flag makes the command inspect unmodified files as candidates for the source of copy. This is a very expensive operation for large - projects, so use it with caution. + projects, so use it with caution. Giving more than one + `-C` option has the same effect. -l<num>:: -M and -C options require O(n^2) processing time where n @@ -2201,6 +2201,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) options->detect_rename = DIFF_DETECT_RENAME; } else if (!prefixcmp(arg, "-C")) { + if (options->detect_rename == DIFF_DETECT_COPY) + options->find_copies_harder = 1; if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) return -1; |