X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=aclocal.m4;h=0037c58ca807c403a206647415ed64ef8c00bf05;hb=549033b9a02ebe4be5e3f5afae93a838d3bc912f;hp=48d0b77b748d6dd9b3462eb79bfbc20293c53792;hpb=a4cc910a3401d25bb94ff0ecb4dc18f681c71004;p=lilypond.git

diff --git a/aclocal.m4 b/aclocal.m4
index 48d0b77b74..0037c58ca8 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -42,7 +42,8 @@ AC_DEFUN(STEPMAKE_GET_VERSION, [
 
     if test -z "$_ver"; then
         ## If empty, try date [fontforge]
-        eval _ver=\"\`("$1" --version || "$1" -V) 2>&1 | grep '[0-9]\{6,8\}' \
+        eval _ver=\"\`("$1" --version || "$1" -V) 2>&1 \
+	    | grep '\(^\|[^0-9a-f]\)[0-9]\{6,8\}\([^0-9a-f]\|$\)' \
 	    | head -n 1 \
 	    | sed -e 's/^[^.0-9]*//' -e 's/[^.0-9]*$//'\`\"
     fi