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help.c: fix autocorrect in work tree for bare repository 

Currently, auto correction doesn't work reliably for commands which must
run in a work tree (e.g. `git status`) in Git work trees which are
created from a bare repository.

As far as I'm able to determine, this has been broken since commit
659fef199f (help: use early config when autocorrecting aliases,
2017-06-14), where the call to `git_config()` in `help_unknown_cmd()`
was replaced with a call to `read_early_config()`. From what I can tell,
the actual cause for the unexpected error is that we call
`git_default_config()` in the `git_unknown_cmd_config` callback instead
of simply returning `0` for config entries which we aren't interested
in.

Calling `git_default_config()` in this callback to `read_early_config()`
seems like a bad idea since those calls will initialize a bunch of state
in `environment.c` (among other things `is_bare_repository_cfg`) before
we've properly detected that we're running in a work tree.

All other callbacks provided to `read_early_config()` appear to only
extract their configurations while simply returning `0` for all other
config keys.

This commit changes the `git_unknown_cmd_config` callback to not call
`git_default_config()`. Instead we also simply return `0` for config
keys which we're not interested in.

Additionally the commit adds a new test case covering `help.autocorrect`
in a work tree created from a bare clone.

Signed-off-by: Simon Gerber <gesimu@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Simon Gerber 2022-10-29 19:56:14 +00:00 committed by Junio C Hamano
parent c48035d29b
commit 0918d08887
2 changed files with 7 additions and 1 deletions
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2
help.c
View File

@ -563,7 +563,7 @@ static int git_unknown_cmd_config(const char *var, const char *value, void *cb)
if (skip_prefix(var, "alias.", &p))
add_cmdname(&aliases, p, strlen(p));
return git_default_config(var, value, cb);
return 0;
}
static int levenshtein_compare(const void *p1, const void *p2)

6
t/t9003-help-autocorrect.sh
View File

@ -60,4 +60,10 @@ test_expect_success 'autocorrect can be declined altogether' '
test_line_count = 1 actual
'
test_expect_success 'autocorrect works in work tree created from bare repo' '
git clone --bare . bare.git &&
git -C bare.git worktree add ../worktree &&
git -C worktree -c help.autocorrect=immediate stauts
'
test_done