extensions: prohibit registration of command without using @command (API)
Detect the problem earlier for better error indication. I'm tired of teaching
users that the mq extension is not guilty but the third-party extension is.
https://bitbucket.org/tortoisehg/thg/issues?q=%27norepo%27
# extension to emulate interrupting filemerge._filemerge
from __future__ import absolute_import
from mercurial import (
error,
extensions,
filemerge,
)
def failfilemerge(filemergefn,
premerge, repo, mynode, orig, fcd, fco, fca, labels=None):
raise error.Abort("^C")
return filemergefn(premerge, repo, mynode, orig, fcd, fco, fca, labels)
def extsetup(ui):
extensions.wrapfunction(filemerge, '_filemerge',
failfilemerge)