As far as I recall if you create a new fish prompt function it goes in
~/.config/fish/functions/fish_prompt.fish, this will override the
default one which is somewhere like
/usr/share/fish/functions/fish_prompt.fish. I think the docs on
functions covers this, make the file manually if you need to.
Jan Kanis wrote:
Hi Chris,
What you want is a bit harder in fish than in bash. In bash, the
prompt is specified by some kind of format string that can be
manipulated. In fish, it's a function, and functions are not really
first class values in the way they are in scripting languages like
python. What you'd want to do is rename the old fish_prompt function
to something else, and make a new fish_prompt function that calls the
old one. Unfortunately, as far as I know there's no direct way to
rename a function. You can do it using this slightly hacky way, though:
echo "function old_fish_prompt" > tmpfile
echo -n \# >> tmpfile # this will comment out the
# old 'function fish_prompt ...
' line
functions fish_prompt >> tmpfile # dump function definition
. tmpfile # source the 'renamed' function
rm tmpfile
Then you can redefine fish_prompt to do something and then call
old_fish_prompt.
Though if someone knows if it's possible to rename/shadow functions
directly, that would be better. I guess it requires a new builtin,
though.
Jan
On Sat, Aug 28, 2010 at 03:37, Christopher Nilsson
<christop...@otherchirps.net <mailto:christop...@otherchirps.net>> wrote:
Hi all,
I think I'm missing something obvious.
I'm trying to add a fish_prompt function that adds to the existing
prompt. I can clobber the old one easily enough, but am having
trouble building on it.
The aim is to convert a bash script, which is simply setting
PS1="(new prompt stuff) $PS1". Is there a fishy equivalent?
Thanks,
Chris.
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