Re: completion: lookup argument using descriptions

[Tomasz Pala <gotar@polanet.pl>]

On Thu, Jun 10, 2021 at 12:09:06 +0200, Mikael Magnusson wrote:

> On 6/10/21, Roman Perepelitsa <roman.perepelitsa@gmail.com> wrote:
>>
>>     zstyle ':completion:*' menu select=0 search
>>
>> This will allow you to search right away after TAB.
>>
>> Roman.
> 
> If you only want to do this sometimes (since defaulting to search mode
> for all completion is probably extremely annoying), you can bind it to
> a separate key;
[...]
> then you can press ^R to enter the search mode from there, if you also do
> bindkey -M menuselect '^R' history-incremental-search-forward
> (this is handled specially in menu select mode, and won't actually
> invoke history searching.)

Thank you so much Roman and Mikael, that was what I needed:)

How do you know about the 'search' option? I don't find it documented
anywhere, namely not in
https://zsh.sourceforge.io/Guide/zshguide06.html#l158

Also, the behaviour of history-incremental-search-forward widget in
menuselect keymap is vaguely documented (actually, misleading):
https://zsh.sourceforge.io/Doc/Release/Zsh-Modules.html#Menu-selection


So now I wonder whether it is possible to highlight the isearch match
from within menuselect. Apparently zle_highlight='(isearch...)' doesn't work,
leaving me with zstyle ':completion:*:options:' list-colors ...

For this however I don't see any way to get the isearch *value* entered - I
see only ISEARCHMATCH_* that could be used by region_highlight(), and
LASTSEARCH. Yet LASTSEARCH also seems to be not updated inside menuselect:

$ o='=(#b)*(-- *($LASTSEARCH)*)=1;31=1;32=1;33'; zstyle -e ':completion:*:options' list-colors 'reply=("'"$o"'")'
$ ctrl+r - network - right-arrow (puts 'network' into $LASTSEARCH)
$ ping -[tab] (or whatever brings menu completion)
[...]
-n  -- show network addresses as numbers	- 'network' highlighted
[...]

$ ping -[enter menu selection] [ctrl-r for history-incremental-search-forward]
isearch: flood

In order to update LASTSEARCH i need to perform search inside ZLE itself
and then hit 'undo', which is a bit awkward.


So the question is: is there any way to update LASTSEARCH when using

bindkey -M menuselect '^R' history-incremental-search-forward

?

-- 
Tomasz Pala <gotar@pld-linux.org>