X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/2e77248ab194f9b38fb25be575070369113ece77..91adb2c5aa2b24a5927ad9ff9b3b16e5efffb4b1:/makedist.sh

diff --git a/makedist.sh b/makedist.sh
index 4e695b6..7af8fbf 100755
--- a/makedist.sh
+++ b/makedist.sh
@@ -15,7 +15,7 @@ case "$#" in
     if test "x$rev" = "xexported"; then rev=; fi
     ;;
   *)
-    case "$1" in *[!0-9]*) echo "Malformed revision number '$1'">&2;exit 1;;esac
+    case "$1" in *[!0-9M]*) echo "Malformed revision number '$1'">&2;exit 1;;esac
     rev="$1"
     ;;
 esac