Mercurial > hg-stable
changeset 43165:227ba1afcb65
py3: keep stdout as defined by pycompat in procutil
According to https://docs.python.org/3/library/functions.html#open, it's
not possible to use 1 as buffering argument value in binary mode. This
is probably why line buffering does not work well in python3.
On the other hand, sys.stdout.buffer appears to be line-buffered already
on python3. So by not replacing it, there should be no behavior change.
This fixes buffering issue in "hg email" (confirmation prompt shown
before information to be confirmed).
| author | Denis Laxalde <denis.laxalde@logilab.fr> |
|---|---|
| date | Thu, 10 Oct 2019 16:00:02 +0200 |
| parents | c32531444cdc |
| children | a5b04863dbff |
| files | mercurial/utils/procutil.py |
| diffstat | 1 files changed, 3 insertions(+), 1 deletions(-) [+] |
line wrap: on
line diff
--- a/mercurial/utils/procutil.py Mon Oct 07 21:21:16 2019 -0400 +++ b/mercurial/utils/procutil.py Thu Oct 10 16:00:02 2019 +0200 @@ -53,7 +53,9 @@ if pycompat.iswindows: # Windows doesn't support line buffering stdout = os.fdopen(stdout.fileno(), r'wb', 0) - else: + elif not pycompat.ispy3: + # on Python 3, stdout (sys.stdout.buffer) is already line buffered and + # buffering=1 is not handled in binary mode stdout = os.fdopen(stdout.fileno(), r'wb', 1) if pycompat.iswindows: