[Fish-users] Print and update information below commandline?

[Jakob Pfender]

Hello,

I recently switched from zsh to fish and am currently trying to port my
version of Mikael Magnusson's rationalise-dot to fish. The basic
functionality (automatically expanding each '.' after an initial '..' to
a new '/..') is fairly straightforward and probably known to most of
you:

 function rationalise_dot
if commandline -t | sgrep -q '\(^\|/\)\.\.$'
commandline -i /..
else
commandline -i .
 end
 end

 function fish_user_key_bindings
bind . rationalise_dot
 end

However, my version had another feature that I find extremely handy: It
displays the path that the current '../../.. etc' expands to beneath the
commandline, like this:

 $ cd /a/b/c/d/e
 $ cd ../
 /a/b/c/d   <- this is automatically displayed below the
   commandline, not the output of the cd command
 $ cd ../../
 /a/b/c/<- ditto

And so on. The zsh code looks like this:

 rationalise-dot() {
local MATCH dir split
split=(${(z)LBUFFER})
if (( $#split > 1 )); then
dir=$split[-1]
else
dir=$split
fi
if [[ $LBUFFER =~ '(^|/| | |'$'\n''|\||;|&)\.\./$' ]]; then
zle self-insert
zle self-insert
LBUFFER+=/
[[ -e $dir ]] && zle -M $dir(:a:h)
elif [[ $LBUFFER[-1] == '.' ]]; then
zle self-insert
LBUFFER+=/
[[ -e $dir ]] && zle -M $dir(:a:h)
else
zle self-insert
fi
}

Is there a way to get this functionality in fish? Autocomplete
suggestions in fish are already displayed in a similar fashion, but as
far as I can tell, this is a core functionality of fish and the ability
to display arbitrary information below the commandline is not exposed as
a callable function. Or am I mistaken?

This is obviously a minor quibble but I would appreciate it if someone
had suggestions as to how to go about implementing it.

Best regards

--
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Re: [Fish-users] Print and update information below commandline?

[Robert Carpenter]

Hey Jakob,

I thought I'd chime in with the implementation I have running, just for the 
sake of completion:

fish -v
fish, version 2.1.2-1228-g89da096

.config/fish/functions/expand-dot-to-parent-directory-path.fish :

function expand-dot-to-parent-directory-path -d 'expand ... to ../.. etc'
# Get commandline up to cursor
set -l cmd (commandline --cut-at-cursor)

# Match last line
switch $cmd[-1]
case '*..'
commandline --insert '/..'
case '*'
commandline --insert '.'
end
end

.config/fish/config.fish :

function fish_user_key_bindings
  bind . 'expand-dot-to-parent-directory-path'
end

Now, mine also doesn't have the second line preview that you mentioned, but I 
thought it might be helpful to show another way to accomplish the period 
expansion.

I have a hunch that the complete command might be able to do what is needed, 
but I haven't looked into it.

> On Oct 7, 2015, at 05:47, Jakob Pfender  wrote:
> 
> Hello,
> 
> I recently switched from zsh to fish and am currently trying to port my
> version of Mikael Magnusson's rationalise-dot to fish. The basic
> functionality (automatically expanding each '.' after an initial '..' to
> a new '/..') is fairly straightforward and probably known to most of
> you:
> 
> function rationalise_dot
>   if commandline -t | sgrep -q '\(^\|/\)\.\.$'
>   commandline -i /..
>   else
>   commandline -i .
> end
> end
> 
> function fish_user_key_bindings
>   bind . rationalise_dot
> end
> 
> However, my version had another feature that I find extremely handy: It
> displays the path that the current '../../.. etc' expands to beneath the
> commandline, like this:
> 
> $ cd /a/b/c/d/e
> $ cd ../
> /a/b/c/d  <- this is automatically displayed below the
>  commandline, not the output of the cd command
> $ cd ../../
> /a/b/c/   <- ditto
> 
> And so on. The zsh code looks like this:
> 
> rationalise-dot() {
>   local MATCH dir split
>   split=(${(z)LBUFFER})
>   if (( $#split > 1 )); then
>   dir=$split[-1]
>   else
>   dir=$split
>   fi
>   if [[ $LBUFFER =~ '(^|/| | |'$'\n''|\||;|&)\.\./$' ]]; then
>   zle self-insert
>   zle self-insert
>   LBUFFER+=/
>   [[ -e $dir ]] && zle -M $dir(:a:h)
>   elif [[ $LBUFFER[-1] == '.' ]]; then
>   zle self-insert
>   LBUFFER+=/
>   [[ -e $dir ]] && zle -M $dir(:a:h)
>   else
>   zle self-insert
>   fi
> }
> 
> Is there a way to get this functionality in fish? Autocomplete
> suggestions in fish are already displayed in a similar fashion, but as
> far as I can tell, this is a core functionality of fish and the ability
> to display arbitrary information below the commandline is not exposed as
> a callable function. Or am I mistaken?
> 
> This is obviously a minor quibble but I would appreciate it if someone
> had suggestions as to how to go about implementing it.
> 
> Best regards
> 
> --
> Full-scale, agent-less Infrastructure Monitoring from a single dashboard
> Integrate with 40+ ManageEngine ITSM Solutions for complete visibility
> Physical-Virtual-Cloud Infrastructure monitoring from one console
> Real user monitoring with APM Insights and performance trend reports 
> Learn More http://pubads.g.doubleclick.net/gampad/clk?id=247754911=/4140
> ___
> Fish-users mailing list
> Fish-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/fish-users

--
Full-scale, agent-less Infrastructure Monitoring from a single dashboard
Integrate with 40+ ManageEngine ITSM Solutions for complete visibility
Physical-Virtual-Cloud Infrastructure monitoring from one console
Real user monitoring with APM Insights and performance trend reports 
Learn More http://pubads.g.doubleclick.net/gampad/clk?id=247754911=/4140___
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