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"
" cursorline_current: If 'cursorline' is globally on, only enable it for the
" current window, and only when not in insert mode. Essentially, make
" 'cursorline' follow the actual normal-mode cursor as much as possible.
"
" Author: Tom Ryder <tom@sanctum.geek.nz>
" License: Same as Vim itself
"
if exists('loaded_cursorline_current') || &compatible
finish
endif
if !has('autocmd') || !has('windows') || v:version < 700
finish
endif
let loaded_cursorline_current = 1
" Suspend 'cursorline' when a window is inactive or inserting
function! s:Suspend() abort
let w:cursorline_current = &l:cursorline
let &l:cursorline = 0
endfunction
" Restore 'cursorline' when a window is active and non-insert
function! s:Restore() abort
let &l:cursorline = get(w:, 'cursorline_current', &g:cursorline)
let w:cursorline_current = &l:cursorline
endfunction
" Call s:Suspend() on all windows besides the current one
function! s:Load() abort
" Cache current window index
let wcur = winnr()
" Iterate through all the windows and suspend all but the current one
for wnum in range(1, winnr('$'))
if wnum == wcur
continue
endif
execute wnum . 'wincmd w'
call s:Suspend()
endfor
" Return to the window in which we started
execute wcur . 'wincmd w'
endfunction
" Set up hooks for toggling 'cursorline'
augroup cursorline_current
autocmd!
" Turn off 'cursorline' for other windows on load
autocmd VimEnter * call s:Load()
" Turn off 'cursorline' when leaving a window or losing focus. We call the
" restore again on BufEnter to handle existent local buffer values for the
" option overwriting the window value (Vim bug?)
autocmd WinLeave,FocusLost * call s:Suspend()
autocmd BufEnter,WinEnter,FocusGained * call s:Restore()
" Turn off 'cursorline' when in insert mode
" Check g:cursorline_current_insert, in case the user doesn't want it
if get(g:, 'cursorline_current_insert', 1)
autocmd InsertEnter * call s:Suspend()
autocmd InsertLeave * call s:Restore()
endif
augroup END
|
