lsp+fzf preview show incorrect line.

[lzh01]

In code

vista.vim/autoload/vista/finder.vim

Lines 158 to 193 in f925e48

	function! vista#finder#PrepareOpts(source, prompt) abort
	let opts = {
	\ 'source': a:source,
	\ 'sink': function('vista#finder#fzf#sink'),
	\ 'options': ['--prompt', a:prompt, '--nth', '..-2', '--delimiter', ':'] + get(g:, 'vista_fzf_opt', []),
	\ }
	if len(g:vista_fzf_preview) > 0
	let idx = 0
	let opt_preview_window_processed = v:false
	while idx < len(g:vista_fzf_preview)
	if g:vista_fzf_preview[idx] =~# '^\(left\|up\|right\|down\)'
	let g:vista_fzf_preview[idx] = g:vista_fzf_preview[idx] . ':+{-1}-5'
	let opt_preview_window_processed = v:true
	endif
	let idx = idx + 1
	endwhile
	if !opt_preview_window_processed
	call extend(g:vista_fzf_preview, ['right:+{-1}-5'])
	endif
	let preview_opts = call('fzf#vim#with_preview', g:vista_fzf_preview).options
	if has('win32')
	" keeping old code around since we are not sure if / how preview works on windows
	let preview_opts[-1] = preview_opts[-1][0:-3] . g:vista.source.fpath . (g:vista#renderer#enable_icon ? ':{2}' : ':{1}')
	else
	let object_name_index = g:vista#renderer#enable_icon ? '3' : '2'
	let extract_line_number = printf(':$(echo {%s})', object_name_index)
	let preview_opts[-1] = preview_opts[-1][0:-3] . fnameescape(g:vista.source.fpath) . extract_line_number
	endif
	call extend(opts.options, preview_opts)
	endif
	return opts
	endfunction

It all depends on ':' as field separator, but when 'symbol' name or the line of code contains ':', the fzf preview can't get the correct line, will mostly end up showing from the start of the file.

For example, it can't handle lsp result line like

ClassA::varName:250 Variable yyy = "asdf:asdf";
function:275 Function ClassA::function() {

Tried to fix, but seems we have to use a different separator like '|' for the input.

[lzh01]

Also another issue for this part:

vista.vim/autoload/vista/finder.vim

Lines 168 to 174 in f925e48

	while idx < len(g:vista_fzf_preview)
	if g:vista_fzf_preview[idx] =~# '^\(left\|up\|right\|down\)'
	let g:vista_fzf_preview[idx] = g:vista_fzf_preview[idx] . ':+{-1}-5'
	let opt_preview_window_processed = v:true
	endif
	let idx = idx + 1
	endwhile

g:vista_fzf_preview got updated everytime we call a preview, and ':+{-1}-5' end up being added many times.