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.
> >
> >
> Another option is to introduce two new functions to convert between
> the byte index and the character index in a buffer line:
>
> buf_byteidx(bufnr, lnum, charidx)
> buf_charidx(bufnr, lnum, byteidx)
>
> The buf_byteidx() function returns the byte index for the given character
> index in the specified line and buf_charidx() does the opposite.
>
> What do you think about this approach?
What is it going to look like? You need this for your plugin, so you
can write the script lines to see how it would work.
--
hundred-and-one symptoms of being an internet addict:
105. When someone asks you for your address, you tell them your URL.
/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\ an exciting new programming language -- http://www.Zimbu.org ///
\\\ help me help AIDS victims -- http://ICCF-Holland.org ///
--
--
You received this message from the "vim_dev" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php
---
You received this message because you are subscribed to the Google Groups
"vim_dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/vim_dev/202101072131.107LV1eV664594%40masaka.moolenaar.net.
