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Empty values of FORCE_COLOR and NO_COLOR are not ignored #129061

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serhiy-storchaka opened this issue Jan 20, 2025 · 3 comments
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Empty values of FORCE_COLOR and NO_COLOR are not ignored #129061

serhiy-storchaka opened this issue Jan 20, 2025 · 3 comments
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3.13 bugs and security fixes 3.14 new features, bugs and security fixes topic-repl Related to the interactive shell type-bug An unexpected behavior, bug, or error

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@serhiy-storchaka
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serhiy-storchaka commented Jan 20, 2025 •
edited by bedevere-app bot
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Bug report

Bug description:

https://no-color.org/

Command-line software which adds ANSI color to its output by default should check for a NO_COLOR environment variable that, when present and not an empty string (regardless of its value), prevents the addition of ANSI color.

https://force-color.org/

Command-line software which outputs colored text should check for a FORCE_COLOR environment variable. When this variable is present and not an empty string (regardless of its value), it should force the addition of ANSI color.

Both "standards" state that these environment variables has only effect if their value is not an empty string. But Python currently only tests that the environment variables are defined.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

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@serhiy-storchaka serhiy-storchaka added 3.13 bugs and security fixes 3.14 new features, bugs and security fixes topic-repl Related to the interactive shell type-bug An unexpected behavior, bug, or error labels Jan 20, 2025
@serhiy-storchaka
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cc @hugovk

@erlend-aasland
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See also earlier discussion: #128318 (comment)

@bedevere-app bedevere-app bot mentioned this issue Jan 21, 2025
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hugovk commented Jan 23, 2025

Please see PR #129140.

hugovk added a commit that referenced this issue Jan 27, 2025
@hugovk
gh-129061: Fix FORCE_COLOR and NO_COLOR when empty strings (#129140)
9546fe2
miss-islington pushed a commit to miss-islington/cpython that referenced this issue Jan 27, 2025
@hugovk @miss-islington
pythongh-129061: Fix FORCE_COLOR and NO_COLOR when empty strings (p…
a8eeea9 
…ythonGH-129140)

(cherry picked from commit 9546fe2ef2db921709f3cb355b33bba977658672)

Co-authored-by: Hugo van Kemenade <[email protected]>
@bedevere-app bedevere-app bot mentioned this issue Jan 27, 2025
Merged
hugovk added a commit that referenced this issue Jan 27, 2025
@miss-islington @hugovk
[3.13] gh-129061: Fix FORCE_COLOR and NO_COLOR when empty strings (…
c7f9e74 
…GH-129140) (#129360)

gh-129061: Fix `FORCE_COLOR` and `NO_COLOR` when empty strings (GH-129140)
(cherry picked from commit 9546fe2)

Co-authored-by: Hugo van Kemenade <[email protected]>
@hugovk hugovk closed this as completed Jan 27, 2025
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