Cause lagging in vim

[aborilov]

I used this plugin for a long time, but after I updated some other plugins, vim starts to lagging very hard(scrolling, moving cursor, etc). To research this problem, I turn off plugins one by one and it looks like xkbwitch cause of the problem. Don't know how updating of other plugins could break xkbswitch.

[lyokha]

Try it this way (for terminal):

vim --noplugin -c 'runtime plugin/xkbswitch.vim'

Is it still bad?

[aborilov]

no, with just this plugin, work normally. that plugin in pair with some other break vim. here list of my plugins. may be you will see some suspicious plugin :)

Bundle 'Raimondi/delimitMate'
Plugin 'bling/vim-airline'
Plugin 'scrooloose/nerdtree'
Plugin 'tpope/vim-surround'
Plugin 'tpope/vim-fugitive'
Plugin 'scrooloose/syntastic'
Plugin 'airblade/vim-gitgutter'
Plugin 'scrooloose/nerdcommenter'
Plugin 'Valloric/YouCompleteMe'
Plugin 'altercation/vim-colors-solarized'
Plugin 'klen/python-mode'
Plugin 'tomasr/molokai'
Plugin 'vim-scripts/taglist.vim'
Plugin 'szw/vim-ctrlspace'
Plugin 'mileszs/ack.vim'
Plugin 'nathanaelkane/vim-indent-guides'
Plugin 'christoomey/vim-tmux-navigator'
Plugin 'edkolev/tmuxline.vim'
Plugin 'sjl/gundo.vim'
Plugin 'benmills/vimux'
Plugin 'ryanoasis/vim-devicons'
" start to work too slow
" Plugin 'lyokha/vim-xkbswitch'
Plugin 'machakann/vim-sandwich'
Plugin 'pearofducks/ansible-vim'
Plugin 'fatih/vim-go'
Plugin 'vim-airline/vim-airline-themes'
Plugin 'ctrlpvim/ctrlp.vim'
Plugin 'tpope/vim-unimpaired'
Plugin 'rizzatti/dash.vim'

[lyokha]

Try disable translation and Select mode mappings by putting in .vimrc lines

let g:XkbSwitchIMappings = []
let g:XkbSwitchSkipGhKeys = ['gh', 'gH']

[aborilov]

nope, didn't helped

[xaiamov]

I observed the same problem and found out that the reason was in sequence which was used for the arrow keys: https://stackoverflow.com/a/25111512/4177749

I just needed to switch back to the _enus layout in command mode without remembering current layout. So I have completely disabled the plugin solved the problem with this code in .vimrc:

function <SID>condLayout()
    if mode() == "n"
        call libcall('/usr/local/lib/libxkbswitch.dylib', 'Xkb_Switch_setXkbLayout', "2")
    endif
endfunction

autocmd InsertLeave * call timer_start(200, { tid -> <SID>condLayout()})

The script checks current vim mode after 200 ms timeout and if it is "normal" - switches to _enus layout. Timeout helps to avoid switching layout on cursor movements.

Thank you guys for the library and this plugin which helped me to find the solution.