Mercurial > hg
view hgext/pager.py @ 18796:fa6d5c62f3bd
pathcomplete: complete directories more conservatively
Suppose we want to perform a single-level completion (i.e. without
--full) of "fi" in a repo containing "fee", "fie/dead", "fie/live",
and "foe".
If we give back "fie/" as the only answer, the shell will consider
the completion to be unambiguous, and will append a space after the
completion. We can't complete "fie/live" or "fie/dead" without
first backspacing over that space.
We used to thus create two fake names, "fie/a" and "fie/b", to force
the shell to consider the completion to be ambiguous. It would then
stop at "fie/" without appending a space, allowing us to hit tab
again to complete "fie/live" or "fie/dead".
The change here arises from realising that we only need to force
the shell to consider a completion as ambiguous if we have exactly
one directory and zero files as possible completions.
This prevents spurious names from showing up as possible completions
when they don't need to be invented in the first place.
author | Bryan O'Sullivan <bryano@fb.com> |
---|---|
date | Thu, 21 Mar 2013 22:10:54 -0700 |
parents | fcc4b55876c3 |
children | d2647edb1782 |
line wrap: on
line source
# 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. 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 from mercurial.i18n import _ testedwith = 'internal' def _pagerfork(ui, p): if not util.safehasattr(os, 'fork'): sys.stdout = util.popen(p, 'wb') if ui._isatty(sys.stderr): sys.stderr = sys.stdout return fdin, fdout = os.pipe() pid = os.fork() if pid == 0: os.close(fdin) os.dup2(fdout, sys.stdout.fileno()) if ui._isatty(sys.stderr): os.dup2(fdout, sys.stderr.fileno()) os.close(fdout) return os.dup2(fdin, sys.stdin.fileno()) os.close(fdin) os.close(fdout) try: os.execvp('/bin/sh', ['/bin/sh', '-c', p]) except OSError, e: if e.errno == errno.ENOENT: # no /bin/sh, try executing the pager directly args = shlex.split(p) os.execvp(args[0], args) else: raise def _pagersubprocess(ui, p): pager = subprocess.Popen(p, shell=True, bufsize=-1, close_fds=util.closefds, stdin=subprocess.PIPE, stdout=sys.stdout, stderr=sys.stderr) stdout = os.dup(sys.stdout.fileno()) stderr = os.dup(sys.stderr.fileno()) 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() os.dup2(stdout, sys.stdout.fileno()) os.dup2(stderr, sys.stderr.fileno()) pager.wait() def _runpager(ui, p): # The subprocess module shipped with Python <= 2.4 is buggy (issue3533). # The compat version is buggy on Windows (issue3225), but has been shipping # with hg for a long time. Preserve existing functionality. if sys.version_info >= (2, 5): _pagersubprocess(ui, p) else: _pagerfork(ui, p) 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")) if p: attend = ui.configlist('pager', 'attend', attended) auto = options['pager'] == 'auto' always = util.parsebool(options['pager']) if (always or auto and (cmd in attend or (cmd not in ui.configlist('pager', 'ignore') and not attend))): ui.setconfig('ui', 'formatted', ui.formatted()) ui.setconfig('ui', 'interactive', False) if util.safehasattr(signal, "SIGPIPE"): signal.signal(signal.SIGPIPE, signal.SIG_DFL) _runpager(ui, p) return orig(ui, options, cmd, cmdfunc) extensions.wrapfunction(dispatch, '_runcommand', pagecmd) 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']