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Diff: -l<num> to limit rename/copy detection.

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When many paths are modified, rename detection takes a lot of time.
The new option -l<num> can be used to disable rename detection when
more than <num> paths are possibly created as renames.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano
2005-09-21 00:18:27 -07:00
parent 6b5ee137e5
commit 8082d8d305
5 changed files with 34 additions and 20 deletions
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8
diffcore-rename.c
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@ -249,8 +249,11 @@ static int compute_stays(struct diff_queue_struct *q,
return 1;
}
void diffcore_rename(int detect_rename, int minimum_score)
void diffcore_rename(struct diff_options *options)
{
int detect_rename = options->detect_rename;
int minimum_score = options->rename_score;
int rename_limit = options->rename_limit;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_queue_struct outq;
struct diff_score *mx;
@ -279,7 +282,8 @@ void diffcore_rename(int detect_rename, int minimum_score)
else if (detect_rename == DIFF_DETECT_COPY)
register_rename_src(p->one, 1);
}
if (rename_dst_nr == 0)
if (rename_dst_nr == 0 ||
(0 <= rename_limit && rename_limit < rename_dst_nr))
goto cleanup; /* nothing to do */
/* We really want to cull the candidates list early