Re: unicode in prompt breaks command search

[Nathan Sidwell <nathan@acm.org>]

On 1/16/20 8:25 PM, dana wrote:
> On 16 Jan 2020, at 15:43, Nathan Sidwell <nathan@acm.org> wrote:
>> For reasons, I put a multibyte unicode char in $PROMPT, this ends up messing
>> with zsh's idea of the current column, as it doesn't understand the display
>> width of $PROMPT.
> 
> You need to tell it what it is with the %{/%} and/or %G escape sequences. For
> example, all of these are roughly equivalent and let zsh know that アイウエオ
> takes up ten columns:
> 
>    PROMPT='%10{アイウエオ%}'
>    PROMPT='%{アイウエオ%10G%}'
>    PROMPT='%{%2Gア%2Gイ%2Gウ%2Gエ%2Gオ%}'
> 
> %{...%} without a leading digit or embedded %G is zero-width (useful for
> invisible escape sequences).
> 
> http://zsh.sourceforge.net/Doc/Release/Prompt-Expansion.html#Visual-effects
> 
> (I don't think the behaviour of these sequences has changed since 5.2, but you
> can check your zshmisc(1) to be sure)

On 1/17/20 3:23 AM, Roman Perepelitsa wrote:
> Zsh can figure out how many columns Unicode characters take provided
> that you configure locale correctly. The most common reason why Zsh
> might think that every byte is one character is because the encoding
> in the current locale is not UTF-8.

thanks for the pointers!

nathan
-- 
Nathan Sidwell