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bpo-42174: fallback to sane values if the columns or lines are 0 in get_terminal_size (GH-29046)

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I considered only falling back when both were 0, but that still seems
wrong, and the highly popular rich[1] library does it this way, so I
thought we should probably inherit that behavior.

[1] https://github.com/willmcgugan/rich

Signed-off-by: Filipe Laíns <lains@riseup.net>

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
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Filipe Laíns 2021-10-19 19:42:13 +01:00 • committed by GitHub
parent 574241632b
commit 236e301b8a
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3 changed files with 8 additions and 2 deletions
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Lib/shutil.py
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@ -1372,9 +1372,9 @@ def get_terminal_size(fallback=(80, 24)):
# os.get_terminal_size() is unsupported
size = os.terminal_size(fallback)
if columns <= 0:
columns = size.columns
columns = size.columns or fallback[0]
if lines <= 0:
lines = size.lines
lines = size.lines or fallback[1]
return os.terminal_size((columns, lines))