Yegappan wrote:
> The getpos(), col() and getcurpos() functions currently return the byte
> index
> in a line. The setpos() and cursor() functions use the byte index to
> position
> the cursor or to set a mark.
>
> The language server protocol uses character index instead of byte index
> in a line. I see that the various LSP Vim plugins have created their own
> utility functions to convert between the byte index and the character index.
> It will be better to extend the built-in function to use character indexes,
> so that multiple plugins can use this.
>
> What do you think about enhancing these functions like below?
>
> getpos({expr}, [charcol])
> col({expr}, [charcol])
> setpos({expr}, {list}, [charcol])
> cursor({list}, [charcol])
> getcurpos([{winid} [, charcoal]})
>
> In the above functions, if 'charcol' is set to true, then the returned
> column
> number will be a character index. If 'charcol' is false or not specified
> (the default), then the returned column number will be a byte index.
Using charidx() requires the string to be passed, so that would be a
complicated workaround.
Instead of adding a 0/1/true/false argument we could add new functions:
getcharpos()
charcol()
setcharpos()
getcursorcharpos()
setcursorcharpos()
It's easier to see that "char" is used, compared to an argument that
doesn't say what it's for.
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