debugshell: disable demand importer when importing debugger
For reasons I can't explain (but likely have something to do with a
combination of __import__ inferring default values for arguments and
the demand importer mechanism further assuming defaults), the demand
importer isn't playing well with IPython. Without this patch, we get
a failure "ValueError: Attempted relative import in non-package" when
attempting to import "IPython." The stack has numerous demandimport
calls on it and adding "IPython" to the exclude list in demandimport
isn't enough to make the problem go away, which means the issue is
likely somewhere in the bowells of IPython. It's easier to just disable
the demand importer when importing the debugger.
#!/usr/bin/env python
#
# check-config - a config flag documentation checker for Mercurial
#
# Copyright 2015 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import re
import sys
foundopts = {}
documented = {}
configre = (r"""ui\.config(|int|bool|list)\(['"](\S+)['"],\s*"""
r"""['"](\S+)['"](,\s+(?:default=)?(\S+?))?\)""")
configpartialre = (r"""ui\.config""")
def main(args):
for f in args:
sect = ''
prevname = ''
confsect = ''
carryover = ''
for l in open(f):
# check topic-like bits
m = re.match('\s*``(\S+)``', l)
if m:
prevname = m.group(1)
if re.match('^\s*-+$', l):
sect = prevname
prevname = ''
if sect and prevname:
name = sect + '.' + prevname
documented[name] = 1
# check docstring bits
m = re.match(r'^\s+\[(\S+)\]', l)
if m:
confsect = m.group(1)
continue
m = re.match(r'^\s+(?:#\s*)?(\S+) = ', l)
if m:
name = confsect + '.' + m.group(1)
documented[name] = 1
# like the bugzilla extension
m = re.match(r'^\s*(\S+\.\S+)$', l)
if m:
documented[m.group(1)] = 1
# like convert
m = re.match(r'^\s*:(\S+\.\S+):\s+', l)
if m:
documented[m.group(1)] = 1
# quoted in help or docstrings
m = re.match(r'.*?``(\S+\.\S+)``', l)
if m:
documented[m.group(1)] = 1
# look for ignore markers
m = re.search(r'# (?:internal|experimental|deprecated|developer)'
' config: (\S+\.\S+)$', l)
if m:
documented[m.group(1)] = 1
# look for code-like bits
line = carryover + l
m = re.search(configre, line, re.MULTILINE)
if m:
ctype = m.group(1)
if not ctype:
ctype = 'str'
name = m.group(2) + "." + m.group(3)
default = m.group(5)
if default in (None, 'False', 'None', '0', '[]', '""', "''"):
default = ''
if re.match('[a-z.]+$', default):
default = '<variable>'
if name in foundopts and (ctype, default) != foundopts[name]:
print l
print "conflict on %s: %r != %r" % (name, (ctype, default),
foundopts[name])
foundopts[name] = (ctype, default)
carryover = ''
else:
m = re.search(configpartialre, line)
if m:
carryover = line
else:
carryover = ''
for name in sorted(foundopts):
if name not in documented:
if not (name.startswith("devel.") or
name.startswith("experimental.") or
name.startswith("debug.")):
ctype, default = foundopts[name]
if default:
default = ' [%s]' % default
print "undocumented: %s (%s)%s" % (name, ctype, default)
if __name__ == "__main__":
sys.exit(main(sys.argv[1:]))