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To: cygwin AT cygwin DOT com
From: Andrew Schulman <schulman DOT andrew AT epa DOT gov>
Subject: Re: fish prompt oddity
Date: Thu, 09 Oct 2014 06:30:50 -0400
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> In fish, I like to set the prompt to print a blank line before the prompt text.  No
> problem:  I just add an "echo" statement at the beginning of the fish_prompt
> function.  In fish in Linux that works fine:
> 
> ===
> andrex AT helium ~> pwd
> /home/andrex
> 
> andrex AT helium ~> 
> ===
> 
> But in Cygwin, it has a strange effect.  It seems that the prompt gets reprinted
> every time the syntax highlighting changes, so I get a bunch of extra lines printed
> as I type.  Here's how the same pwd command looks in my Cygwin fish console:
> 
> ===
> andrex AT selenium ~>
> andrex AT selenium ~> pwd
> andrex AT selenium ~> pwd
> andrex AT selenium ~> pwd
> /home/andrex
> 
> andrex AT selenium ~>
> ===

For the archive, I worked around this problem by solving it a different way.  Instead
of changing the fish_prompt function, I defined a fish_prompt event handler to print
the extra blank line:

function fish_prompt_handler --on-event fish_prompt
    echo
end

This gives me the blank line before each prompt, and for whatever reason it doesn't
interfere with syntax highlighting as I type.

Andrew


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