On 2020-06-03 05:46, Manuel Jacob wrote:
On 2020-06-03 00:04, Augie Fackler wrote:
On Jun 2, 2020, at 14:07, Manuel Jacob <m...@manueljacob.de> wrote:
# HG changeset patch
# User Manuel Jacob <m...@manueljacob.de>
# Date 1591120869 -7200
# Tue Jun 02 20:01:09 2020 +0200
# Branch stable
# Node ID ebbc45544673c33ea3beb887ed4d5230b015102a
# Parent 91e509a12dbc4cd6cf2dcb9dae3ed383932132ac
py3: always flush ui streams on Python 3
On Python 2, we rely on that stdout and stderr are line buffered.
Python 3’s
io module doesn’t offer line buffered binary streams.
We use the underlying non-buffer thing though for std{err, out}
though, or so I thought. Are you observing behavior that this
corrects?
pycompat says:
stdout = sys.stdout.buffer
stderr = sys.stderr.buffer
They are <_io.BufferedWriter name='<stdout>'> and <_io.BufferedWriter
name='<stderr>'>, respectively.
I observed the error in TortoiseHg, which is a long-running process.
To trigger the problem with the hg command, you would need to do
something slow that prints on `self._fout`, e.g. `hg pull
https://www.mercurial-scm.org/repo/hg --debug`.
Actually, you don’t need to specify --debug.
Just run `hg pull https://www.mercurial-scm.org/repo/hg` and observe
that without the patch, "pulling from
https://www.mercurial-scm.org/repo/hg"; will not be immediately printed
on your screen.
I’ve sent an updated patch with this example in the description and with
a correction.
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