Mercurial > hg
view tests/test-ui-color.py @ 31499:31d2ddfd338c
color: sync text attributes and buffered text output on Windows (issue5508)
I originally noticed that log output wasn't being colored after 3a4c0905f357,
but there were other complications too. With a bunch of untracked files, only
the first 1K of characters were colored pink, and the rest were normal white. A
single modified file at the top would also be colored pink.
Line buffering and full buffering are treated as the same thing in Windows [1],
meaning the stream is either buffered or not. I can't find any explicit
documentation to say stdout is unbuffered by default when attached to a console
(but some internet postings indicated that is the case[2]). Therefore, it seems
that explicit flushes are better than just not reopening stdout.
NB: pager is now on by default, and needs to be disabled to see any color on
Windows.
[1] https://msdn.microsoft.com/en-us/library/86cebhfs(v=vs.140).aspx
[2] https://sourceforge.net/p/mingw/mailman/message/27121137/
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Sun, 19 Mar 2017 12:44:45 -0400 |
parents | b4cb86ab4c71 |
children | 236596a67a54 |
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from __future__ import absolute_import, print_function import os from mercurial import ( dispatch, ui as uimod, ) # ensure errors aren't buffered testui = uimod.ui() testui.pushbuffer() testui.write(('buffered\n')) testui.warn(('warning\n')) testui.write_err('error\n') print(repr(testui.popbuffer())) # test dispatch.dispatch with the same ui object hgrc = open(os.environ["HGRCPATH"], 'w') hgrc.write('[extensions]\n') hgrc.write('color=\n') hgrc.close() ui_ = uimod.ui.load() ui_.setconfig('ui', 'formatted', 'True') # we're not interested in the output, so write that to devnull ui_.fout = open(os.devnull, 'w') # call some arbitrary command just so we go through # color's wrapped _runcommand twice. def runcmd(): dispatch.dispatch(dispatch.request(['version', '-q'], ui_)) runcmd() print("colored? %s" % (ui_._colormode is not None)) runcmd() print("colored? %s" % (ui_._colormode is not None))