Change grep -e to grep --all
We want to reserve -e for future use and grep compatibility.
I've changed every-match to all out of a general preference for
shorter long option names where short options don't exist.
#!/bin/sh
hg init
echo a > a
hg add a
hg commit -m "test" -d "0 0"
hg history
hg tag -d "0 0" "bleah"
hg history
echo foo >> .hgtags
hg tag -d "0 0" "bleah2" || echo "failed"