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patch: reapply path limit

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This was originally applied added in commit eac1b67 (ui-patch: Apply
path limit to generated patch, 2010-06-10) but the ability to limit
patches to particular paths was lost in commit 455b598 (ui-patch.c: Use
log_tree_commit() to generate diffs, 2013-08-20).

The new output is slightly different from the original because Git's
diff infrastructure doesn't give us a way to insert an annotation
immediately after the "---" separator, so the commit has moved below the
diff stat.

Signed-off-by: John Keeping <john@keeping.me.uk>
This commit is contained in:
John Keeping 2016-03-14 22:41:14 +00:00 committed by Jason A. Donenfeld
parent c177379547
commit 5fe88a9c81
1 changed files with 8 additions and 2 deletions
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10
ui-patch.c
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@ -18,9 +18,13 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
struct commit *commit;
struct object_id new_rev_oid, old_rev_oid;
char rev_range[2 * 40 + 3];
char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range };
const char *rev_argv[] = { NULL, "--reverse", "--format=email", rev_range, "--", prefix };
int rev_argc = ARRAY_SIZE(rev_argv);
char *patchname;
if (!prefix)
rev_argc--;
if (!new_rev)
new_rev = ctx.qry.head;
@ -79,7 +83,9 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
rev.max_parents = 1;
rev.diffopt.output_format |= DIFF_FORMAT_DIFFSTAT |
DIFF_FORMAT_PATCH | DIFF_FORMAT_SUMMARY;
setup_revisions(ARRAY_SIZE(rev_argv), (const char **)rev_argv, &rev,
if (prefix)
rev.diffopt.stat_sep = fmt("(limited to '%s')\n\n", prefix);
setup_revisions(ARRAY_SIZE(rev_argv), rev_argv, &rev,
NULL);
prepare_revision_walk(&rev);