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diff: make "too many files" rename warning optional

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In many cases, the warning ends up as clutter, because the
diff is being done "behind the scenes" from the user (e.g.,
when generating a commit diffstat), and whether we show
renames or not is not particularly interesting to the user.

However, in the case of a merge (which is what motivated the
warning in the first place), it is a useful hint as to why a
merge with renames might have failed.

This patch makes the warning optional based on the code
calling into diffcore. We default to not showing the
warning, but turn it on for merges.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2008-04-30 13:25:53 -04:00 committed by Junio C Hamano
parent 50705915ea
commit b8960bbe7b
3 changed files with 4 additions and 1 deletions
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1
builtin-merge-recursive.c
View file

@ -365,6 +365,7 @@ static struct path_list *get_renames(struct tree *tree,
opts.rename_limit = merge_rename_limit >= 0 ? merge_rename_limit :
diff_rename_limit >= 0 ? diff_rename_limit :
500;
opts.warn_on_too_large_rename = 1;
opts.output_format = DIFF_FORMAT_NO_OUTPUT;
if (diff_setup_done(&opts) < 0)
die("diff setup failed");

1
diff.h
View file

@ -83,6 +83,7 @@ struct diff_options {
int pickaxe_opts;
int rename_score;
int rename_limit;
int warn_on_too_large_rename;
int dirstat_percent;
int setup;
int abbrev;

3
diffcore-rename.c
View file

@ -492,7 +492,8 @@ void diffcore_rename(struct diff_options *options)
rename_limit = 32767;
if ((num_create > rename_limit && num_src > rename_limit) ||
(num_create * num_src > rename_limit * rename_limit)) {
warning("too many files, skipping inexact rename detection");
if (options->warn_on_too_large_rename)
warning("too many files, skipping inexact rename detection");
goto cleanup;
}