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merge: improve inexact rename limit warning

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The warning is generated deep in the diffcore code, which
means that it will come first, followed possibly by a spew
of conflicts, making it hard to see.

Instead, let's have diffcore pass back the information about
how big the rename limit would needed to have been, and then
the caller can provide a more appropriate message (and at a
more appropriate time).

No refactoring of other non-merge callers is necessary,
because nobody else was even using the warn_on_rename_limit
feature.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2011-02-19 05:20:51 -05:00
committed by Junio C Hamano
parent 7ed863a85a
commit bf0ab10fa8
4 changed files with 14 additions and 4 deletions
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10
merge-recursive.c
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@ -22,6 +22,11 @@
#include "dir.h"
#include "submodule.h"
static const char rename_limit_advice[] =
"inexact rename detection was skipped because there were too many\n"
" files. You may want to set your merge.renamelimit variable to at least\n"
" %d and retry this merge.";
static struct tree *shift_tree_object(struct tree *one, struct tree *two,
const char *subtree_shift)
{
@ -436,12 +441,13 @@ static struct string_list *get_renames(struct merge_options *o,
o->diff_rename_limit >= 0 ? o->diff_rename_limit :
500;
opts.rename_score = o->rename_score;
opts.warn_on_too_large_rename = 1;
opts.output_format = DIFF_FORMAT_NO_OUTPUT;
if (diff_setup_done(&opts) < 0)
die("diff setup failed");
diff_tree_sha1(o_tree->object.sha1, tree->object.sha1, "", &opts);
diffcore_std(&opts);
if (opts.needed_rename_limit > o->needed_rename_limit)
o->needed_rename_limit = opts.needed_rename_limit;
for (i = 0; i < diff_queued_diff.nr; ++i) {
struct string_list_item *item;
struct rename *re;
@ -1666,6 +1672,8 @@ int merge_recursive(struct merge_options *o,
commit_list_insert(h2, &(*result)->parents->next);
}
flush_output(o);
if (o->needed_rename_limit)
warning(rename_limit_advice, o->needed_rename_limit);
return clean;
}