sha1_name: do not trigger detailed diagnosis for file arguments
diagnose_invalid_sha1_path() is meant to be called to diagnose a
misspelt <treeish>:<pathname> when <pathname> does not exist in
<treeish>. However, the code may call it if <treeish>:<pathname> is
invalid (which triggers another call with only_to_die == 1), but for
another reason. This happens when calling e.g.
git log existing-file HEAD:existing-file
because existing-file is a path and not a revision, the code
verifies that the arguments that follow to be paths. This leads to
an incorrect message like "existing-file does not exist in HEAD",
even though the path exists in HEAD.
Check that the search for <pathname> in <treeish> fails before
triggering the diagnosis.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/sha1_name.c b/sha1_name.c
index 03ffc2c..aff224b 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1115,7 +1115,7 @@
if (new_filename)
filename = new_filename;
ret = get_tree_entry(tree_sha1, filename, sha1, &oc->mode);
- if (only_to_die) {
+ if (ret && only_to_die) {
diagnose_invalid_sha1_path(prefix, filename,
tree_sha1, object_name);
free(object_name);
diff --git a/t/t1506-rev-parse-diagnosis.sh b/t/t1506-rev-parse-diagnosis.sh
index 0843a1c..e81dcd6 100755
--- a/t/t1506-rev-parse-diagnosis.sh
+++ b/t/t1506-rev-parse-diagnosis.sh
@@ -171,4 +171,15 @@
grep "BUG: startup_info struct is not initialized." error
'
+test_expect_success '<commit>:file correctly diagnosed after a pathname' '
+ test_must_fail git rev-parse file.txt HEAD:file.txt 1>actual 2>error &&
+ test_i18ngrep ! "exists on disk" error &&
+ test_i18ngrep "unknown revision or path not in the working tree" error &&
+ cat >expect <<-\EOF &&
+ file.txt
+ HEAD:file.txt
+ EOF
+ test_cmp expect actual
+'
+
test_done
