===================================================================
RCS file: /cvs/mandoc/gmdiff,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -p -r1.11 -r1.12
--- mandoc/gmdiff	2018/08/16 12:25:32	1.11
+++ mandoc/gmdiff	2025/06/26 17:04:44	1.12
@@ -45,8 +45,8 @@ while [ -n "$1" ]; do
   file=$1
   shift
   echo " ========== $file ========== "
-  $ROFF -mandoc $file | $COLPIPE 2> /tmp/roff.err > /tmp/roff.out
-  ${MANDOC:=mandoc} $MOPT $file | $COLPIPE \
+  ($ROFF -mandoc $file | $COLPIPE) 2> /tmp/roff.err > /tmp/roff.out
+  (${MANDOC:=mandoc} $MOPT $file | $COLPIPE) \
     2> /tmp/mandoc.err > /tmp/mandoc.out
   for i in roff mandoc; do
     [ -s /tmp/$i.err ] && echo "$i errors:" && cat /tmp/$i.err