annotate tests/filtertraceback.py @ 44603:bda050bc9987 stable

py3: make setup.py's hgcommand() consistently return bytes

Before this patch, it returned unicode when the command failed. That
made e.g. `make local PYTHON=python3` fail on an obsolete commit.

Differential Revision: https://phab.mercurial-scm.org/D8331

#!/usr/bin/env python

# Filters traceback lines from stdin.

from __future__ import absolute_import, print_function

import sys

state = 'none'

for line in sys.stdin:
    if state == 'none':
        if line.startswith('Traceback '):
            state = 'tb'

    elif state == 'tb':
        if line.startswith('  File '):
            state = 'file'
            continue

        elif not line.startswith(' '):
            state = 'none'

    elif state == 'file':
        # Ignore lines after "  File "
        state = 'tb'
        continue

    print(line, end='')