view contrib/showstack.py @ 37775:03d7f885d5f2

revsetlang: do not pass in non-bytes to parse()

Since parse() isn't a simple function, we shouldn't expect it would raise
TypeError or ValueError for invalid inputs. Before, TypeError was raised
at 'if pos != len(spec)', which was quite late to report an error.

This patch also makes tokenize() detect invalid object before converting
it to a py3-safe bytes.

Spotted while adding the 'revset(...)' hack to _parsewith().

# showstack.py - extension to dump a Python stack trace on signal
#
# binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
"""dump stack trace when receiving SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
"""

from __future__ import absolute_import
import signal
import sys
import traceback

def sigshow(*args):
    sys.stderr.write("\n")
    traceback.print_stack(args[1], limit=10, file=sys.stderr)
    sys.stderr.write("----\n")

def extsetup(ui):
    signal.signal(signal.SIGQUIT, sigshow)
    try:
        signal.signal(signal.SIGINFO, sigshow)
    except AttributeError:
        pass