view tests/heredoctest.py @ 46103:3f82a915ab2a

histedit: tweak `edit` message to try and guide users to our workflow

histedit predates evolve, so it drops you on an _uncommitted_ version
of the commit you're amending/splitting, which is in contrast to git
which expects you to use `git commit --amend` (I think - I'm basing
this on internal bug reports). My hope is that this output will guide
users a little more towards the expected workflow.

Differential Revision: https://phab.mercurial-scm.org/D9560

from __future__ import absolute_import, print_function

import sys


def flush():
    sys.stdout.flush()
    sys.stderr.flush()


globalvars = {}
lines = sys.stdin.readlines()
while lines:
    l = lines.pop(0)
    if l.startswith('SALT'):
        print(l[:-1])
    elif l.startswith('>>> '):
        snippet = l[4:]
        while lines and lines[0].startswith('... '):
            l = lines.pop(0)
            snippet += l[4:]
        c = compile(snippet, '<heredoc>', 'single')
        try:
            flush()
            exec(c, globalvars)
            flush()
        except Exception as inst:
            flush()
            print(repr(inst))