On 4 July 2014, ZyX <[email protected]> wrote:
> > I agree 100% that it's broken. They still do it.
> >
> > For what it's worth, I had to look at the sources at many of
> > said compilers to get syntastic to understand their output, and
> > using virtual columns isn't *that* far fetched. Most of the time
> > they just expand tabs while parsing and don't bother keeping track
> > of the original offset. When they run into an error they just
> > compute the column number by adding the lengths of the whitespace
> > and the tokens parsed so far.
> >
> > Double width characters is a different story. Some compilers
> > use Unicode codepoints, others byte length, which is, again, broken.
> > Still, Vim's virtual columns is yet the best approximation of it.
>
> I think the best solution is proposed colnr() function: check out
> [that thread][1]. virtcol to byte offset transformation is useful not
> only for matchaddpos().
Yes, a colnr() function would be useful, both in this situation and
by itself.
> I had to write it in [translit3][2] and that variant is rather
> slow. Your proposal will fix matchaddpos() for one given use-case and
> only matchaddpos() and only under very limited conditions. colnr() is
> not so limited.
I'm afraid you lost me here. I just pointed out a number of (what I
consider to be) problems with the design of matchaddpos(), which I found
when I actually tried to use the function. I never attempetd to suggest
any solutions.
Your colnr() might be, IMO, a reasonable solution for one of the
problems I noted. It doesn't address any of the others.
> I say that you are seeking answer in a wrong direction.
>
> [1]: https://groups.google.com/forum/#!topic/vim_dev/2DYfyTuo7G0
> [2]:
> https://sourceforge.net/p/translit3/code/ci/040e92e8021320740109067dbe2fb43e50fbba94/tree/autoload/translit3.vim#l2262
/lcd
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