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ultimate-vim/sources_non_forked/vim-expand-region/plugin/expand_region.vim

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VimL

" ==============================================================================
" File: expand_region.vim
" Author: Terry Ma
" Description: Incrementally select larger regions of text in visual mode by
" repeating the same key combination
" Last Modified: March 30, 2013
" ==============================================================================
let s:save_cpo = &cpo
set cpo&vim
" Init global vars
call expand_region#init()
" ==============================================================================
" Mappings
" ==============================================================================
if !hasmapto('<Plug>(expand_region_expand)')
nmap + <Plug>(expand_region_expand)
vmap + <Plug>(expand_region_expand)
endif
if !hasmapto('<Plug>(expand_region_shrink)')
vmap _ <Plug>(expand_region_shrink)
nmap _ <Plug>(expand_region_shrink)
endif
nnoremap <silent> <Plug>(expand_region_expand)
\ :<C-U>call expand_region#next('n', '+')<CR>
" Map keys differently depending on which mode is desired
if expand_region#use_select_mode()
snoremap <silent> <Plug>(expand_region_expand)
\ :<C-U>call expand_region#next('v', '+')<CR>
snoremap <silent> <Plug>(expand_region_shrink)
\ :<C-U>call expand_region#next('v', '-')<CR>
else
xnoremap <silent> <Plug>(expand_region_expand)
\ :<C-U>call expand_region#next('v', '+')<CR>
xnoremap <silent> <Plug>(expand_region_shrink)
\ :<C-U>call expand_region#next('v', '-')<CR>
endif
let &cpo = s:save_cpo
unlet s:save_cpo