fb1bb965 ("read-tree: deprecate syntax without tree-ish args",
2010-09-10) wanted to deprecate "git read-tree" without any tree,
which used to be the way to empty the index, and encourage use of
"git read-tree --empty" instead.
However, when used with "-m", "--empty" does not make any sense,
either, simply because merging 0 trees will result in a different
error anyway.
Omit the deprecation warning and let the code to emit real error
message diagnose the error.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
Junio C Hamano <gitster@xxxxxxxxx> writes:
> Jean-Noel Avila <jn.avila@xxxxxxx> writes:
>
>> "git read-tree -m" requires a tree argument to name the tree to be
>> merged in. Git uses a cutesy error message to say so and why:
>>
>> $ git read-tree -m
>> warning: read-tree: emptying the index with no arguments is
>> deprecated; use --empty
>> fatal: just how do you expect me to merge 0 trees?
>> $ git read-tree -m --empty
>> fatal: just how do you expect me to merge 0 trees?
>
> This shows another issue. The "emptying ... is deprecated" message
> shouldn't be given when -m is present.
>
> I am not saying that that needs to be fixed by you and/or as a part
> of this patch. Just something I noticed while reviewing the patch.
builtin/read-tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/builtin/read-tree.c b/builtin/read-tree.c
index 23e212ee8c..284de743c3 100644
--- a/builtin/read-tree.c
+++ b/builtin/read-tree.c
@@ -210,7 +210,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
die("failed to unpack tree object %s", arg);
stage++;
}
- if (nr_trees == 0 && !read_empty)
+ if (!nr_trees && !read_empty && !opts.merge)
warning("read-tree: emptying the index with no arguments is deprecated; use --empty");
else if (nr_trees > 0 && read_empty)
die("passing trees as arguments contradicts --empty");
--
2.13.0-336-gf73534b083