test-grep: fixed comment

tests/test-grep

@@ -1,97 +1,97 b''
 #!/bin/sh
 
 mkdir t
 cd t
 hg init
 echo import > port
 hg add port
 hg commit -m 0 -u spam -d '0 0'
 echo export >> port
 hg commit -m 1 -u eggs -d '1 0'
 echo export > port
 echo vaportight >> port
 echo 'import/export' >> port
 hg commit -m 2 -u spam -d '2 0'
 echo 'import/export' >> port
 hg commit -m 3 -u eggs -d '3 0'
 head -n 3 port > port1
 mv port1 port
 hg commit -m 4 -u spam -d '4 0'
 echo % pattern error
 hg grep '**test**'
 echo % simple
 hg grep port port
 echo % all
 hg grep --all -nu port port
 echo % other
 hg grep import port
 
 hg cp port port2
 hg commit -m 4 -u spam -d '5 0'
 echo '% follow'
 hg grep -f 'import$' port2
 echo deport >> port2
 hg commit -m 5 -u eggs -d '6 0'
 hg grep -f --all -nu port port2
 
 cd ..
 hg init t2
 cd t2
 hg grep foobar foo
 hg grep foobar
 echo blue >> color
 echo black >> color
 hg add color
 hg ci -m 0
 echo orange >> color
 hg ci -m 1
 echo black > color
 hg ci -m 2
 echo orange >> color
 echo blue >> color
 hg ci -m 3
 hg grep orange
 hg grep --all orange
 
 echo % match in last "line" without newline
 python -c 'fp = open("noeol", "wb"); fp.write("no infinite loop"); fp.close();'
 hg ci -Amnoeol
 echo % last character omitted in output to avoid infinite loop
 hg grep loop
 
 # Got a traceback when using grep on a single
 # revision with renamed files.
 cd ..
 echo % issue 685
 hg init issue685
 cd issue685
 echo octarine > color
 hg ci -Amcolor
 hg rename color colour
 hg ci -Am rename
 hg grep octarine
 # Used to crash here
 hg grep -r 1 octarine
 
-# Issue337: grep did not compared changesets by their revision numbers
-# instead of following parent-child relationships.
+# Issue337: test that grep follows parent-child relationships instead
+# of just using revision numbers.
 cd ..
 echo % issue 337
 hg init issue337
 cd issue337
 
 echo white > color
 hg commit -A -m "0 white"
 
 echo red > color
 hg commit -A -m "1 red"
 
 hg update 0
 echo black > color
 hg commit -A -m "2 black"
 
 hg update --clean 1
 echo blue > color
 hg commit -A -m "3 blue"
 
 hg grep --all red