piem-patch-subject-re: Permit other text before the patch prefix

Requiring that the patch prefix be at the beginning prevents matching
subjects for projects in which senders commonly put other prefixes
like "[bug#NNN]" before "[PATCH]".

1 files changed, 1 insertions, 1 deletions

diff --git a/piem.el b/piem.el
index e297930..47681fb 100644
--- a/piem.el
+++ b/piem.el
@@ -313,7 +313,7 @@ the first will be ignored."
       info)))
 
 (defvar piem-patch-subject-re
-  (rx string-start (zero-or-more space) "["
+  (rx (zero-or-more space) "["
       (zero-or-more (not (any "]" "\n")))
       "PATCH"
       (zero-or-more (not (any "]" "\n")))