Mercurial > hg
view mercurial/txnutil.py @ 47062:f38bf44e077f stable
black: make codebase compatible with black v21.4b2 and v20.8b1
I don't know what exact version of black made it care about these whitespace
differences, but this is the version I got when I just installed it with
`pip3 install black`.
I'm intentionally not increasing the version of black required, as I don't want
to force everyone to upgrade their version of black, and these fixes are
backwards compatible with black v20.8b1. If there are more issues in the future
and this becomes a maintenance burden I may do so in a future change.
Tested with both versions of black (I got the older version via
`pip3 install black==20.8b1`)
Differential Revision: https://phab.mercurial-scm.org/D10539
author | Kyle Lippincott <spectral@google.com> |
---|---|
date | Fri, 30 Apr 2021 16:13:02 -0700 |
parents | 89a2afe31e82 |
children | 6000f5b25c9b |
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# txnutil.py - transaction related utilities # # Copyright FUJIWARA Katsunori <foozy@lares.dti.ne.jp> 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. from __future__ import absolute_import import errno from . import encoding def mayhavepending(root): """return whether 'root' may have pending changes, which are visible to this process. """ return root == encoding.environ.get(b'HG_PENDING') def trypending(root, vfs, filename, **kwargs): """Open file to be read according to HG_PENDING environment variable This opens '.pending' of specified 'filename' only when HG_PENDING is equal to 'root'. This returns '(fp, is_pending_opened)' tuple. """ if mayhavepending(root): try: return (vfs(b'%s.pending' % filename, **kwargs), True) except IOError as inst: if inst.errno != errno.ENOENT: raise return (vfs(filename, **kwargs), False)