reverse sense of return value from python hooks.
old scheme (False/None/0/'' == fail) made coding style
unnatural, did not allow use of mercurial commands as hooks.
new scheme (False/None/0 == pass) is pythonic, does not require peculiar
"return True" at ends of hooks, allows hooks like this:
[hooks]
# update working dir after push into this repo
changegroup.update = python:mercurial.commands.update
#!/bin/sh
hg init
echo a > a
hg add a
hg commit -m "test" -d "1000000 0"
hg history
hg tag -d "1000000 0" "bleah"
hg history
echo foo >> .hgtags
hg tag -d "1000000 0" "bleah2" || echo "failed"
hg tag -d "1000000 0" -r 0 "bleah2" 1 || echo "failed"
hg revert .hgtags
hg tag -d "1000000 0" -r 0 "bleah0"
hg tag -l -d "1000000 0" "bleah1" 1
cat .hgtags
cat .hg/localtags
hg tag -l 'xx
newline'
hg tag -l 'xx:xx'
true