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transplant: crash if repo.commit() finds nothing to commit...
transplant: crash if repo.commit() finds nothing to commit (makes issue2135, issue2264 more obvious, but does nothing to fix either one) This seems to happen in two distinct cases: * patch.patch() claims success but changes nothing (e.g. the transplanted changeset adds an empty file that already exists) * patch.patch() makes changes, but repo.status() fails to report them Both of these seem like bugs in other parts of Mercurial, so arguably it's not transplant's job to detect the failure to commit. However: * detecting the problem as soon as possible is desirable * it prevents a more obscure crash later, in transplants.write() * there might be other lurking (or future) bugs that cause repo.commit() to do nothing Also, in the case of issue2264 (source changesets silently dropped by transplant), the only way to spot the problem currently is the crash in transplants.write(). Failure to transplant a patch should abort immediately, whether it's user error (patch does not apply) or a Mercurial bug (e.g. repo.status() failing to report changes).
Martin Geisler - - Load All Authors

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r10974:854ac04d default
r11638:79231258 stable
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runrst
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#!/usr/bin/env python
#
# runrst - register custom roles and run correct writer
#
# Copyright 2010 Matt Mackall <mpm@selenic.com> and others
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
"""usage: %s WRITER args...
where WRITER is the name of a Docutils writer such as 'html' or 'manpage'
"""
import sys
from docutils.parsers.rst import roles
from docutils.core import publish_cmdline
from docutils import nodes, utils
def role_hg(name, rawtext, text, lineno, inliner,
options={}, content=[]):
text = "hg " + utils.unescape(text)
linktext = nodes.literal(rawtext, text)
parts = text.split()
cmd, args = parts[1], parts[2:]
if cmd == 'help' and args:
cmd = args[0] # link to 'dates' for 'hg help dates'
node = nodes.reference(rawtext, '', linktext,
refuri="hg.1.html#%s" % cmd)
return [node], []
roles.register_local_role("hg", role_hg)
if __name__ == "__main__":
if len(sys.argv) < 2:
sys.stderr.write(__doc__ % sys.argv[0])
sys.exit(1)
writer = sys.argv[1]
del sys.argv[1]
publish_cmdline(writer_name=writer)