Wednesday, February 11, 2015

Re: obtain current visual selection

Le mardi 10 février 2015 09:22:35 UTC+1, Enno a écrit :
> Hello,
>
> There is a thread on StackOverflow labelled
>
> "How to get visually selected text in VimScript"
>
> The naive and stable approach would be
>
> let old_reg = @v
> normal! gv"vy
> let raw_search = @v
> let @v = old_reg
> return raw_search
>
> but that only works if `set nosecure`. If `set secure` then
> the functions become involved. I posted my own take at
>
> http://stackoverflow.com/questions/1533565/how-to-get-visually-selected-text-in-vimscript/28398359#28398359
>
> but it handles neither block-wise selections nor multibyte columns. A function that supports both is for example given at
>
> https://github.com/haya14busa/vim-asterisk/blob/4fda3a4d90926512fbb10eda8b7b0491c650eb5e/autoload/asterisk.vim#L163
>
> Is there a simple solution at all?
>
> Enno

Hello Ben,

The function throws an error E523 that, by :help E523, appears only if &secure.

To reproduce, put

set secure
fun! grep#GetVis()
let old_reg = @v
normal! gv"vy
let raw_search = @v
let @v = old_reg
return raw_search
endfun

in ~/.vim/autoload/grep.vim

and source

set secure
xnoremap <expr> * '/' . grep#GetVis() . '<CR>'

Then hitting viw* throws

Error detected while processing function grep#GetVis:
line 2:
E523: Not allowed here

instead of searching for the selected text.

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