* Missing escaping of C1 control characters for visual representation
@ 2024-02-25 10:03 Stephane Chazelas
2024-02-25 10:11 ` [Pleae ignore] " Stephane Chazelas
0 siblings, 1 reply; 2+ messages in thread
From: Stephane Chazelas @ 2024-02-25 10:03 UTC (permalink / raw)
To: Zsh hackers list
~$ a=$'\x9f' LC_ALL=fr_FR.iso885915@euro zsh -c $'set -x; echo ${(q+)a}; [[ $a = [[:print:]] ]] || echo no'
+zsh:1> echo �
�
+zsh:1> [[ � = [[:print:]] ]]
+zsh:1> echo no
no
Is ISO8859-x, 0x80 to 0x9f are the C1 control characters
(https://en.wikipedia.org/wiki/C0_and_C1_control_codes#C1_controls)
Thankfully, my terminal (xterm) above was started in a UTF-8
locale so those control characters are not handled above, and
the 0x83 is rendered as � as are bytes >= 0x80 that can't be
decoded into characters in UTF-8.
With xterm started in that French locale using iso8859-15, it's
worse, I see just:
+zsh:1> echo %
as xterm has interpreted that APC control character.
I would expect that 0x9F to be rendered as $'\M-\C-_' like in
multibyte locales (or $'\x9f' or $'\x237')
--
Stephane
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Pleae ignore] Missing escaping of C1 control characters for visual representation
2024-02-25 10:03 Missing escaping of C1 control characters for visual representation Stephane Chazelas
@ 2024-02-25 10:11 ` Stephane Chazelas
0 siblings, 0 replies; 2+ messages in thread
From: Stephane Chazelas @ 2024-02-25 10:11 UTC (permalink / raw)
To: Zsh hackers list
2024-02-25 10:03:48 +0000, Stephane Chazelas:
[...]
> I would expect that 0x9F to be rendered as $'\M-\C-_' like in
> multibyte locales (or $'\x9f' or $'\x237')
[...]
And it does in the current version.
Sorry, my bad, I was testing on Ubuntu 22.04's 5.8.1.
--
Stephane
^ permalink raw reply [flat|nested] 2+ messages in thread
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2024-02-25 10:03 Missing escaping of C1 control characters for visual representation Stephane Chazelas
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