gh-154686: Add text_len to TextWrapper#152702
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# Conflicts: # Doc/whatsnew/3.16.rst
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TextWrapper ANSI-awareTextWrapper ANSI-aware
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TextWrapper ANSI-awareTextWrapper ANSI-aware
TextWrapper ANSI-awaretext_len to TextWrapper
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For ANSI and variable character width awareness. Removes local patch introduced in python#154634.
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For ANSI and variable character width awareness. Removes local patch introduced in python#154634.
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Description
Add a
text_lenparameter totextwrap.wrap,textwrap.fill,textwrap.shortenandtextwrap.TextWrapper. It customizes how the visible width of a string is measured, so text that contains zero-width or double-width characters, or invisible ANSI escape sequences, can be wrapped correctly.This has the side effect of removing the local patch in
_split_linesintroduced by #154634 .Context
I am a maintainer of Click and had to maintain my own local fork of
TextWrapperto make it strip ANSI strings properly. See my initial code at: pallets/click#3420 . This PR is a direct port of that code to Python standard library.This PR:
text_lentoTextWrapperfor ANSI and variable character width awareness #154686text_lentoTextWrapperfor ANSI and variable character width awareness #154686