Am 01.08.2014 um 18:23 schrieb Junio C Hamano:
> René Scharfe <[email protected]> writes:
>
>> # Create test repo with two directories with two files each.
>> $ git init
>> Initialized empty Git repository in /tmp/.git/
>> $ mkdir a b
>> $ echo x >a/equal
>> $ echo x >b/equal
>> $ echo y >a/different
>> $ echo z >b/different
>> $ git add a b
>> $ git commit -minitial
>> [master (root-commit) 6d36895] initial
>> 4 files changed, 4 insertions(+)
>> create mode 100644 a/different
>> create mode 100644 a/equal
>> create mode 100644 b/different
>> create mode 100644 b/equal
>>
>> # Replace one directory with a symlink to the other.
>> $ rm -rf b
>> $ ln -s a b
>>
>> # First git status call.
>> $ git status
>> On branch master
>> Changes not staged for commit:
>> (use "git add/rm <file>..." to update what will be committed)
>> (use "git checkout -- <file>..." to discard changes in working directory)
>>
>> deleted: b/different
>>
>> Untracked files:
>> (use "git add <file>..." to include in what will be committed)
>>
>> b
>>
>> no changes added to commit (use "git add" and/or "git commit -a")
>> ...
>>
>> It could be debated if the first git status call should also report
>> b/equal as deleted.
>
> Hmph.
>
> I wonder if "could be" is an understatement. The difference of
> reporting between b/equal and b/different may indicate that somebody
> is mistakenly comparing the index with these paths, without first
> checking each path with has_symlink_leading_path(), or something,
> no?
How about the patch below? Before it checks if an index entry exists
in the work tree, it checks if its path includes a symlink. After
the patch, git status reports b/equal as deleted, too. The test
suite still passes.
And do we need to use the threaded_ variant of the function here?
diff --git a/read-cache.c b/read-cache.c
index 5d3c8bd..6f0057f 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1064,6 +1064,14 @@ static struct cache_entry *refresh_cache_ent(struct
index_state *istate,
return ce;
}
+ if (has_symlink_leading_path(ce->name, ce_namelen(ce))) {
+ if (ignore_missing)
+ return ce;
+ if (err)
+ *err = ENOENT;
+ return NULL;
+ }
+
if (lstat(ce->name, &st) < 0) {
if (ignore_missing && errno == ENOENT)
return ce;
--
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