tests/heredoctest.py

cmdutil: split functions of log-like commands to new module (API)

cmdutil.py is painfully big and makes Emacs slow. Let's split log-related
functions.

  % wc -l mercurial/cmdutil.py
  4027 mercurial/cmdutil.py

  % wc -l mercurial/cmdutil.py mercurial/logcmdutil.py
  3141 mercurial/cmdutil.py
   933 mercurial/logcmdutil.py
  4074 total

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))