reliable buffer initialization

[dirkwallenstein]

Currently a buffer is initialized when the FileType is set

autocmd FileType * call g:MC_ReInitBufferForAllMatchControls()

The very first initialization should be done on WinEnter or so when all other options have been set. See g:MC_ReInitBufferForAllMatchControls() for the problem.

[alexgorban]

I'm not sure whether my problem is related to the issue or it is separate problem.

Every time I switching file currently opened file using NERDTree navigation or CTRL+o to go to previously opened file I'm getting errors like this

If I open new file using command :e filename.txt everything fine.

My vim configuration related to the vim-match-control

highlight Typos ctermbg=red guibg=red
ru plugin/match-control.vim
if !exists("g:mc_typo")
  let g:mc_typo = g:MC_CreateMatchControl('typo')
  let g:mc_typo.off_buftypes = ['quickfix']
  let g:mc_typo.match_setup = {
        \'*': { 'permanent': [["Typos", "it's", -70],["Typos", "its", -70]]}
        \}
endif

[dirkwallenstein]

No, that is another problem. This one is about a setup not being effective when
entering a buffer. The error you described seems to be about an inconsistency
concerning the recording of active matches. (The error should be triggered by
the only matchdelete call in the script)