histedit: crashing with a more useful error message on empty defaultrev
Before this, `hg --config histedit.defaultrev= histedit` would crash with
File "destutil.py", line 385, in desthistedit
if revs:
UnboundLocalError: local variable 'revs' referenced before assignment
Differential Revision: https://phab.mercurial-scm.org/D5543
from __future__ import (
absolute_import,
print_function,
)
import argparse
import os
ap = argparse.ArgumentParser()
ap.add_argument('path', nargs='+')
opts = ap.parse_args()
def gather():
for p in opts.path:
if not os.path.exists(p):
return
if os.path.isdir(p):
yield p + os.path.sep
for dirpath, dirs, files in os.walk(p):
for d in dirs:
yield os.path.join(dirpath, d) + os.path.sep
for f in files:
yield os.path.join(dirpath, f)
else:
yield p
print('\n'.join(sorted(gather(), key=lambda x: x.replace(os.path.sep, '/'))))