Hi.

A part of highlight by matchaddpos() remains after calling matchdelete().

Example:

matchtest.vim
-----------------------
function! Test()
    call setline(1, "test")
    call setline(2, "test")
    let g:m = matchaddpos("ErrorMsg", [ [1, 1], [2 ,2] ])
    return g:m
endfunction

function! Del()
    call matchdelete(g:m)
    " getmatches() is empty.
    echo getmatches() == []
    " => 1
endfunction
-----------------------

vim -u NONE -N
:so matchtest.vim
:call Test()
:call Del()

Highlight at 2nd line ( [2, 2] ) remains.

It seems that match_add() set 'b_mod_bot' one fewer than correct value.

https://gist.github.com/ichizok/ba8c2c667f2fba07b09d

Thanks.
- Ozaki Kiichi

 

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