view contrib/showstack.py @ 26142:7332bf4ae959

dispatch: error out on invalid -R path even if optionalrepo (issue4805) (BC)

Before this patch, repo could be set to None for wrong -R. It's okay for
commands that can reject repo=None, but the command server have a problem
because:

 - it accepts repo=None for "unbound" mode
 - and it reenters dispatch() where repo object is created for cwd by default

Test outputs are changed because the error is detected earlier. I think new
message is better than ".hg not found".

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

import sys, signal, 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