Re: git log doesn't allow %x00 in custom format anymore?

On Thu, Oct 07, 2010 at 07:18:18PM +0400, Kirill Likhodedov wrote:

quoted

Thanks for pointing that out.
I confirm that on Mac OS X that happens for rev-list as well.

# git log --pretty=format:foo%x00bar HEAD -1 | od -c
0000000   f   o   o  \0   b   a   r
0000007

# git rev-list --pretty=format:foo%x00bar HEAD -1 | od -c
0000000   c   o   m   m   i   t       2   3   6   0   1   a   2   c   3
0000020   e   4   6   4   a   4   4   7   9   f   1   7   7   4   e   3
0000040   6   e   a   5   b   9   5   8   b   4   6   0   5   2   1  \n
0000060   f   o   o  \n
0000064

Ugh. Even worse, it does print with --graph, which uses a slightly
different code path.

 $ git rev-list --graph -1 --format=foo%x00bar HEAD | cat -A
 *   commit 81d866a6a213d5524ce389369377ba3529461e1b$
 |\  foo^@bar$

I am inclined to call the rev-list behavior a bug, and the fix is
probably:

diff --git a/builtin/rev-list.c b/builtin/rev-list.c
index efe9360..3b2dca0 100644
--- a/builtin/rev-list.c
+++ b/builtin/rev-list.c

@@ -147,8 +147,10 @@ static void show_commit(struct commit *commit, void *data)

                       }
               } else {
                       if (revs->commit_format != CMIT_FMT_USERFORMAT ||
-                           buf.len)
-                               printf("%s%c", buf.buf, info->hdr_termination);
+                           buf.len) {
+                               fwrite(buf.buf, 1, buf.len, stdout);
+                               putchar(info->hdr_termination);
+                       }
               }
               strbuf_release(&buf);
       } else {