mq: use fallback patch name if no alpha-numeric in summary line (
issue5025)
Before this patch, "hg qimport -r REV" fails, if the summary line of
description of REV doesn't contain any alpha-numeric bytes.
In this case, all bytes in the summary line 'title' are dropped from
'namebase' by the code path below.
namebase = re.sub('[\s\W_]+', '_', title.lower()).strip('_')
'makepatchname()' immediately returns this empty string as valid patch
name, because patch name conflicting against empty string never
exists.
Then, "hg qimport -r REV" is aborted at creation of patch file with
empty filename.
This situation isn't so rare. For example, ordinary texts in Japanese
often consist of non alpha-numeric bytes in UTF-8.
This patch makes 'makepatchname()' use fallback patch name if the
summary line of imported revision doesn't contain any alpha-numeric
bytes.
# pager.py - display output using a pager
#
# Copyright 2008 David Soria Parra <dsp@php.net>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
#
# To load the extension, add it to your configuration file:
#
# [extension]
# pager =
#
# Run "hg help pager" to get info on configuration.
'''browse command output with an external pager
To set the pager that should be used, set the application variable::
[pager]
pager = less -FRX
If no pager is set, the pager extensions uses the environment variable
$PAGER. If neither pager.pager, nor $PAGER is set, no pager is used.
You can disable the pager for certain commands by adding them to the
pager.ignore list::
[pager]
ignore = version, help, update
You can also enable the pager only for certain commands using
pager.attend. Below is the default list of commands to be paged::
[pager]
attend = annotate, cat, diff, export, glog, log, qdiff
Setting pager.attend to an empty value will cause all commands to be
paged.
If pager.attend is present, pager.ignore will be ignored.
Lastly, you can enable and disable paging for individual commands with
the attend-<command> option. This setting takes precedence over
existing attend and ignore options and defaults::
[pager]
attend-cat = false
To ignore global commands like :hg:`version` or :hg:`help`, you have
to specify them in your user configuration file.
The --pager=... option can also be used to control when the pager is
used. Use a boolean value like yes, no, on, off, or use auto for
normal behavior.
'''
import atexit, sys, os, signal, subprocess
from mercurial import commands, dispatch, util, extensions, cmdutil
from mercurial.i18n import _
# Note for extension authors: ONLY specify testedwith = 'internal' for
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
# be specifying the version(s) of Mercurial they are tested with, or
# leave the attribute unspecified.
testedwith = 'internal'
def _runpager(ui, p):
pager = subprocess.Popen(p, shell=True, bufsize=-1,
close_fds=util.closefds, stdin=subprocess.PIPE,
stdout=sys.stdout, stderr=sys.stderr)
# back up original file objects and descriptors
olduifout = ui.fout
oldstdout = sys.stdout
stdoutfd = os.dup(sys.stdout.fileno())
stderrfd = os.dup(sys.stderr.fileno())
# create new line-buffered stdout so that output can show up immediately
ui.fout = sys.stdout = newstdout = os.fdopen(sys.stdout.fileno(), 'wb', 1)
os.dup2(pager.stdin.fileno(), sys.stdout.fileno())
if ui._isatty(sys.stderr):
os.dup2(pager.stdin.fileno(), sys.stderr.fileno())
@atexit.register
def killpager():
if util.safehasattr(signal, "SIGINT"):
signal.signal(signal.SIGINT, signal.SIG_IGN)
pager.stdin.close()
ui.fout = olduifout
sys.stdout = oldstdout
# close new stdout while it's associated with pager; otherwise stdout
# fd would be closed when newstdout is deleted
newstdout.close()
# restore original fds: stdout is open again
os.dup2(stdoutfd, sys.stdout.fileno())
os.dup2(stderrfd, sys.stderr.fileno())
pager.wait()
def uisetup(ui):
if '--debugger' in sys.argv or not ui.formatted():
return
def pagecmd(orig, ui, options, cmd, cmdfunc):
p = ui.config("pager", "pager", os.environ.get("PAGER"))
usepager = False
always = util.parsebool(options['pager'])
auto = options['pager'] == 'auto'
if not p:
pass
elif always:
usepager = True
elif not auto:
usepager = False
else:
attend = ui.configlist('pager', 'attend', attended)
ignore = ui.configlist('pager', 'ignore')
cmds, _ = cmdutil.findcmd(cmd, commands.table)
for cmd in cmds:
var = 'attend-%s' % cmd
if ui.config('pager', var):
usepager = ui.configbool('pager', var)
break
if (cmd in attend or
(cmd not in ignore and not attend)):
usepager = True
break
setattr(ui, 'pageractive', usepager)
if usepager:
ui.setconfig('ui', 'formatted', ui.formatted(), 'pager')
ui.setconfig('ui', 'interactive', False, 'pager')
if util.safehasattr(signal, "SIGPIPE"):
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
_runpager(ui, p)
return orig(ui, options, cmd, cmdfunc)
# Wrap dispatch._runcommand after color is loaded so color can see
# ui.pageractive. Otherwise, if we loaded first, color's wrapped
# dispatch._runcommand would run without having access to ui.pageractive.
def afterloaded(loaded):
extensions.wrapfunction(dispatch, '_runcommand', pagecmd)
extensions.afterloaded('color', afterloaded)
def extsetup(ui):
commands.globalopts.append(
('', 'pager', 'auto',
_("when to paginate (boolean, always, auto, or never)"),
_('TYPE')))
attended = ['annotate', 'cat', 'diff', 'export', 'glog', 'log', 'qdiff']