[Emacs-diffs] master 32fd876: Fix bug with "%%" in error format

[Paul Eggert]

branch: master
commit 32fd8768093e21f1e812548d27c0bfd70cd82f78
Author: Paul Eggert <address@hidden>
Commit: Paul Eggert <address@hidden>

    Fix bug with "%%" in error format
    
    * src/doprnt.c (doprnt): Format "%%" correctly.
    Problem reported by Philipp Stephani in:
    http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00901.html
---
 src/doprnt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/doprnt.c b/src/doprnt.c
index bed9350..418601a 100644
--- a/src/doprnt.c
+++ b/src/doprnt.c
@@ -438,7 +438,9 @@ doprnt (char *buffer, ptrdiff_t bufsize, const char *format,
              }
 
            case '%':
-             fmt--;    /* Drop thru and this % will be treated as normal */
+             /* Treat this '%' as normal.  */
+             fmt0 = fmt - 1;
+             break;
            }
        }