patchbomb: make test markers more syntax highlighter friendly

tests/test-patchbomb

@@ -1,70 +1,70 b''
 #!/bin/sh
 
 fixheaders()
 {
     sed -e 's/\(Message-Id:.*@\).*/\1/'  \
         -e 's/\(In-Reply-To:.*@\).*/\1/' \
         -e 's/===.*/===/'
 }
 
 echo "[extensions]" >> $HGRCPATH
 echo "patchbomb=" >> $HGRCPATH
 
 hg init t
 cd t
 echo a > a
 hg commit -Ama -d '1 0'
 
 hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar tip | \
   fixheaders
 
 echo b > b
 hg commit -Amb -d '2 0'
 
 hg email --date '1970-1-1 0:2' -n -f quux -t foo -c bar -s test 0:tip | \
   fixheaders
 
 hg email -m test.mbox -f quux -t foo -c bar -s test 0:tip
 
 cd ..
 
 hg clone -q t t2
 cd t2
 echo c > c
 hg commit -Amc -d '3 0'
 
 cat > description <<EOF
 a multiline
 
 description
 EOF
 
-echo % test bundle and description
+echo "% test bundle and description"
 hg email --date '1970-1-1 0:3' -n -f quux -t foo \
     -c bar -s test -r tip -b --desc description | \
     fixheaders
 
-echo % utf-8 patch
+echo "% utf-8 patch"
 python -c 'fp = open("utf", "wb"); fp.write("h\xC3\xB6mma!\n"); fp.close();'
 hg commit -A -d '4 0' -m 'charset=utf-8; content-transfer-encoding: base64'
 
-echo % no mime encoding for email --test
+echo "% no mime encoding for email --test"
 hg email --date '1970-1-1 0:4' -f quux -t foo -c bar -r tip -n | fixheaders > mailtest
-echo % md5sum of 8-bit output
+echo "% md5sum of 8-bit output"
 $TESTDIR/md5sum.py mailtest
 rm mailtest
 
-echo % mime encoded mbox
+echo "% mime encoded mbox"
 hg email --date '1970-1-1 0:4' -f quux -t foo -c bar -r tip -m mbox
 cat mbox | fixheaders
 rm mbox
 
-echo % iso-8859-1 patch
+echo "% iso-8859-1 patch"
 python -c 'fp = open("isolatin", "wb"); fp.write("h\xF6mma!\n"); fp.close();'
 hg commit -A -d '5 0' -m 'charset=us-ascii; content-transfer-encoding: 8bit'
 
-echo % fake ascii mbox
+echo "% fake ascii mbox"
 hg email --date '1970-1-1 0:5' -f quux -t foo -c bar -r tip -m mbox
 fixheaders < mbox > mboxfix
-echo % md5sum of 8-bit output
+echo "% md5sum of 8-bit output"
 $TESTDIR/md5sum.py mboxfix