tests: add a test that demonstrates a bug in rhg status pattern handling
The bug is in [visit_children_set], will be elaborated on in
follow-up changes.
# extension to emulate interrupting filemerge._filemerge
from mercurial import (
error,
extensions,
filemerge,
)
def failfilemerge(*args, **kwargs):
raise error.Abort(b"^C")
def extsetup(ui):
extensions.wrapfunction(filemerge, 'filemerge', failfilemerge)