Mercurial > hg
view tests/test-duplicateoptions.py @ 31209:dd2364f5180a
localrepo: handle rename with hardlinks properly
In "aftertrans", we rename "journal.*" to "undo.*". We expect "journal.*"
files to disappear after renaming.
However, if "journal.foo" and "undo.foo" refer to a same file (hardlink),
rename may be a no-op, leaving both files on disk, according to Linux
manpage [1]:
If oldpath and newpath are existing hard links referring to the same
file, then rename() does nothing, and returns a suc‐ cess status.
The POSIX specification [2] is not very clear about what to do.
To be safe, remove "undo.*" before the rename so "journal.*" cannot be left
on disk.
[1]: http://man7.org/linux/man-pages/man2/rename.2.html
[2]: http://pubs.opengroup.org/onlinepubs/9699919799/
author | Jun Wu <quark@fb.com> |
---|---|
date | Thu, 02 Mar 2017 21:49:30 -0800 |
parents | d83ca854fa21 |
children | bd872f64a8ba |
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from __future__ import absolute_import, print_function import os from mercurial import ( commands, extensions, ui as uimod, ) ignore = set(['highlight', 'win32text', 'factotum']) if os.name != 'nt': ignore.add('win32mbcs') disabled = [ext for ext in extensions.disabled().keys() if ext not in ignore] hgrc = open(os.environ["HGRCPATH"], 'w') hgrc.write('[extensions]\n') for ext in disabled: hgrc.write(ext + '=\n') hgrc.close() u = uimod.ui.load() extensions.loadall(u) globalshort = set() globallong = set() for option in commands.globalopts: option[0] and globalshort.add(option[0]) option[1] and globallong.add(option[1]) for cmd, entry in commands.table.iteritems(): seenshort = globalshort.copy() seenlong = globallong.copy() for option in entry[1]: if (option[0] and option[0] in seenshort) or \ (option[1] and option[1] in seenlong): print("command '" + cmd + "' has duplicate option " + str(option)) seenshort.add(option[0]) seenlong.add(option[1])