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t7006: demonstrate a problem with aliases in subdirectories

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When expanding aliases, the git_dir is set during the alias expansion
(by virtue of running setup_git_directory_gently()).

This git_dir may be relative to the current working directory, and
indeed often is simply ".git/".

When the alias expands to a shell command, we restore the original
working directory, though, yet we do not reset git_dir.

As a consequence, subsequent read_early_config() runs will mistake the
git_dir to be populated properly and not find the correct config.

Demonstrate this problem by adding a test case.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin 2017-06-14 13:35:56 +02:00 committed by Junio C Hamano
parent e4feff4898
commit 3f9c5dfb71
1 changed files with 11 additions and 0 deletions
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11
t/t7006-pager.sh
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@ -391,6 +391,17 @@ test_expect_success TTY 'core.pager in repo config works and retains cwd' '
)
'
test_expect_failure TTY 'core.pager is found via alias in subdirectory' '
sane_unset GIT_PAGER &&
test_config core.pager "cat >via-alias" &&
(
cd sub &&
rm -f via-alias &&
test_terminal git -c alias.r="-p rev-parse" r HEAD &&
test_path_is_file via-alias
)
'
test_doesnt_paginate expect_failure test_must_fail 'git -p nonsense'
test_pager_choices 'git shortlog'