Re: Bug: problem with file named with dash character

Daniel Lyubomirov -|- Digitalus Bulgaria [off-list ref]
writes:

Аccidentally my colleague created a file in the root dir of the git repo called - (just dash).
As result for every commit having this file, diff , merge, cherry-pick maybe others just hang.

Thanks for a report.  I think the "diff" callchain should be
refactored so that the caller can mark the special "stdin" token in
a saner way, but until it happens, the following one-liner should
do.


 diff.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/diff.c b/diff.c
index 1a594df..caa2309 100644
--- a/diff.c
+++ b/diff.c

@@ -2589,6 +2589,14 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
 	if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1))
 		return 0;
 
+	/*
+	 * And asking to read "-" from the working tree triggers stdin
+	 * input (which needs to be fixed separately by refactoring the
+	 * callchain), forbid "reuse" for now.
+	 */
+	if (!strcmp(name, "-"))
+		return 0;
+
 	len = strlen(name);
 	pos = cache_name_pos(name, len);
 	if (pos < 0)