fix: make ghost-text extmark with pcall

[eero-lehtinen]

Fixes #257

This issue also happens to me in a large Rust project where the LSP is slow. It tries to show a slightly outdated text edit and errors, but shows the correct text edit instantly after. So maybe this could also be fixed with better scheduling.

Now I just make the extmark with pcall to not render outdated ghost-texts and cause errors. Nvim-cmp also does this.

[idelice]

This introduces another error that I've experienced by using your changes:

   Error  10:14:28 msg_show.lua_error Error executing vim.schedule lua callback: ...e/projects/blink.cmp/lua/blink/cmp/accept/text-edits.lua:89: index out of range
stack traceback:
	[C]: in function 'get_line_byte_from_position'
	...e/projects/blink.cmp/lua/blink/cmp/accept/text-edits.lua:89: in function 'get_from_item'
	.../projects/blink.cmp/lua/blink/cmp/windows/ghost-text.lua:68: in function 'draw_preview'
	.../projects/blink.cmp/lua/blink/cmp/windows/ghost-text.lua:53: in function 'show_preview'
	.../projects/blink.cmp/lua/blink/cmp/windows/ghost-text.lua:34: in function 'callback'
	...rojects/blink.cmp/lua/blink/cmp/windows/autocomplete.lua:283: in function 'emit_on_select'
	...rojects/blink.cmp/lua/blink/cmp/windows/autocomplete.lua:129: in function 'open_with_items'
	.../ibrahimdelice/projects/blink.cmp/lua/blink/cmp/init.lua:57: in function <.../ibrahimdelice/projects/blink.cmp/lua/blink/cmp/init.lua:51>

[eero-lehtinen]

Ok. I have zero issues at least with rust-analyzer, but another solution is probably necessary.

[Saghen]

Thanks! I believe I found the root cause to be from the offset applied to text edits. I'd like to avoid the pcall if possible so I'll leave it out for now, but if you're still running into errors, I'll take a second look

[eero-lehtinen]

Seems to work 👍