filemerge: reduce some duplication in `_maketempfiles()`
The two callers of the local `maketempfrompath()` function used the
returned file object in the same way. We can reduce duplication by
moving that code into the function.
Differential Revision: https://phab.mercurial-scm.org/D12192
# extension to emulate interrupting filemerge._filemerge
from __future__ import absolute_import
from mercurial import (
error,
extensions,
filemerge,
)
def failfilemerge(*args, **kwargs):
raise error.Abort(b"^C")
def extsetup(ui):
extensions.wrapfunction(filemerge, 'filemerge', failfilemerge)