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From: Nathan Sidwell <nathan@acm.org>
To: dana <dana@dana.is>, roman.perepelitsa@gmail.com
Cc: zsh-workers@zsh.org
Subject: Re: unicode in prompt breaks command search
Date: Fri, 17 Jan 2020 07:05:00 -0500
Message-ID: <dfe17c2d-4fc7-4048-074c-7ce6cd3e005e@acm.org> (raw)
In-Reply-To: <6D242ADC-BAEC-450D-B7BC-974988C38066@dana.is>

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

      parent reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-16 21:43 Nathan Sidwell
2020-01-17  1:25 ` dana
2020-01-17  8:23   ` Roman Perepelitsa
2020-01-17 12:05   ` Nathan Sidwell [this message]

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