tests/heredoctest.py

uncommit: rename the flag 'empty' to 'keep' which retains empty changeset

This patch renames the flag 'empty' which retains the empty changeset if all
the files are uncommitted to 'keep'.

Differential Revision: https://phab.mercurial-scm.org/D726

from __future__ import absolute_import, print_function

import sys

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:
            exec(c, globalvars)
        except Exception as inst:
            print(repr(inst))