Mercurial > hg
annotate mercurial/txnutil.py @ 40534:7ed611c60168
revsets: make bookmark/named('re:nonexistent') not abort (issue6018) (BC)
Foozy documented the differences between revsets branch(), tag(),
bookmark(), and named() in eeb5d5ab14a6 (revset: raise RepoLookupError
to make present() predicate continue the query, 2015-01-31). He seemed
to want tag() to change behavior to not error out on non-matching
regular expressions. I think it's instead bookmark() and named() that
should not error out. So that's what this patch does.
Differential Revision: https://phab.mercurial-scm.org/D5220
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Mon, 05 Nov 2018 09:09:48 -0800 |
parents | 206532700213 |
children | 2372284d9457 |
rev | line source |
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1 # txnutil.py - transaction related utilities |
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2 # |
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3 # Copyright FUJIWARA Katsunori <foozy@lares.dti.ne.jp> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import errno |
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11 |
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12 from . import ( |
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13 encoding, |
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14 ) |
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15 |
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16 def mayhavepending(root): |
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17 '''return whether 'root' may have pending changes, which are |
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18 visible to this process. |
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19 ''' |
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20 return root == encoding.environ.get('HG_PENDING') |
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21 |
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22 def trypending(root, vfs, filename, **kwargs): |
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23 '''Open file to be read according to HG_PENDING environment variable |
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24 |
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25 This opens '.pending' of specified 'filename' only when HG_PENDING |
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26 is equal to 'root'. |
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27 |
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28 This returns '(fp, is_pending_opened)' tuple. |
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29 ''' |
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30 if mayhavepending(root): |
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31 try: |
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32 return (vfs('%s.pending' % filename, **kwargs), True) |
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33 except IOError as inst: |
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34 if inst.errno != errno.ENOENT: |
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35 raise |
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36 return (vfs(filename, **kwargs), False) |