view tests/failfilemerge.py @ 48377:c655483ea6e2

dirstate: add a comment about a racy piece of code during updates

This is a bit that is not really correct but works "fine" in practice. Let us
write the details down so that people stop wondering how that logic might be
correct… It is not.

Differential Revision: https://phab.mercurial-scm.org/D11781

# extension to emulate interrupting filemerge._filemerge

from __future__ import absolute_import

from mercurial import (
    error,
    extensions,
    filemerge,
)


def failfilemerge(
    filemergefn, premerge, repo, wctx, mynode, orig, fcd, fco, fca, labels=None
):
    raise error.Abort(b"^C")
    return filemergefn(premerge, repo, mynode, orig, fcd, fco, fca, labels)


def extsetup(ui):
    extensions.wrapfunction(filemerge, '_filemerge', failfilemerge)