mailmap: default mailmap.blob in bare repositories

The motivation for mailmap.blob is to let users of bare
repositories use the mailmap feature, as they would not have
a checkout containing the .mailmap file. We can make it even
easier for them by just looking in HEAD:.mailmap by default.

We can't know for sure that this is where they would keep a
mailmap, of course, but it is the best guess (and it matches
the non-bare behavior, which reads from HEAD:.mailmap in the
working tree). If it's missing, git will silently ignore the
setting.

We do not do the same magic in the non-bare case, because:

  1. In the common case, HEAD:.mailmap will be the same as
     the .mailmap in the working tree, which is a no-op.

  2. In the uncommon case, the user has modified .mailmap
     but not yet committed it, and would expect the working
     tree version to take precedence.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2012-12-13 08:04:47 -05:00 committed by Junio C Hamano
parent d5422b0c0b
commit 8c473cecfd
3 changed files with 35 additions and 3 deletions

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@ -1519,9 +1519,11 @@ mailmap.file::
mailmap.blob::
Like `mailmap.file`, but consider the value as a reference to a
blob in the repository (e.g., `HEAD:.mailmap`). If both
`mailmap.file` and `mailmap.blob` are given, both are parsed,
with entries from `mailmap.file` taking precedence.
blob in the repository. If both `mailmap.file` and
`mailmap.blob` are given, both are parsed, with entries from
`mailmap.file` taking precedence. In a bare repository, this
defaults to `HEAD:.mailmap`. In a non-bare repository, it
defaults to empty.
man.viewer::
Specify the programs that may be used to display help in the

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@ -233,7 +233,12 @@ static int read_mailmap_blob(struct string_list *map,
int read_mailmap(struct string_list *map, char **repo_abbrev)
{
int err = 0;
map->strdup_strings = 1;
if (!git_mailmap_blob && is_bare_repository())
git_mailmap_blob = "HEAD:.mailmap";
err |= read_mailmap_file(map, ".mailmap", repo_abbrev);
err |= read_mailmap_blob(map, git_mailmap_blob, repo_abbrev);
err |= read_mailmap_file(map, git_mailmap_file, repo_abbrev);

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@ -218,6 +218,31 @@ test_expect_success 'mailmap.blob can be missing' '
test_cmp expect actual
'
test_expect_success 'mailmap.blob defaults to off in non-bare repo' '
git init non-bare &&
(
cd non-bare &&
test_commit one .mailmap "Fake Name <author@example.com>" &&
echo " 1 Fake Name" >expect &&
git shortlog -ns HEAD >actual &&
test_cmp expect actual &&
rm .mailmap &&
echo " 1 A U Thor" >expect &&
git shortlog -ns HEAD >actual &&
test_cmp expect actual
)
'
test_expect_success 'mailmap.blob defaults to HEAD:.mailmap in bare repo' '
git clone --bare non-bare bare &&
(
cd bare &&
echo " 1 Fake Name" >expect &&
git shortlog -ns HEAD >actual &&
test_cmp expect actual
)
'
test_expect_success 'cleanup after mailmap.blob tests' '
rm -f .mailmap
'