Remove some options from 'hg grep': -Z (we have -0 as in locate) -a (use "-r 0:tip" instead, or always grep all unless -r is given) -e (we have the PATTERN argument) -v (doesn't work, and this is more of a job for 'hg cat|grep') -s (we have -q/--quiet) -f (should be always enabled if -l used, or enable on -v/--verbose)

#!/bin/sh

hg init
touch a
hg add a
hg ci -m "a" -d "0 0"

echo 123 > b
hg add b
hg diff | sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
              -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/"

hg diff -r tip | sed -e "s/\(+++ [a-zA-Z0-9_/.-]*\).*/\1/" \
                     -e "s/\(--- [a-zA-Z0-9_/.-]*\).*/\1/"