Re: which match-highlighting is in effect (if any) at a point in a file?

2015-03-30 7:55 GMT+03:00 LCD 47 <lcd047@gmail.com>:
> On 28 March 2015, Charles E Campbell <drchip@campbellfamily.biz> wrote:
>> Hello!
>>
>> In using :match, :2match, :3match, or matchadd(), one may specify
>> special highlighting. Any easy way for a vimscript to know which,
>> if any, highlighting match is active? Such highlighting overrides
>> the usual syntax highlighting, and I'd like to know what's going on
>> at the current cursor position.
>
> getmatches() returns the list of patterns set by matchadd() and
> friends, but as far as I know there is no easy way to tell whether a
> given pattern affects a given line or not.

I neither know the easy way, but I have the hard one:

https://sourceforge.net/p/formatvim/code/ci/ff11b92e967b66c7ad21ce0c4d0c939618c2b97f/tree/autoload/format.vim#l1288

This is a function which determines where highlighting of each match
starts and ends, and also when match highlights past the end of line.
The returned `splcolumns` value (first in the pair) is a dictionary of
dictionaries of lists where keys in top dictionary are line numbers
with matches and keys in second level dictionary are columns at which
matches start or end. List shows where matches start and end.

>
> /lcd
>
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