vim操作符示例

原文
如用\u打开url.而\ui]打开[]中url.而\u$/\uu/等.

"从unimpaired.vim改编"
function! s:DoAction(algorithm,type)
  " 备份设置"
  let sel_save = &selection
  let cb_save = &clipboard
  "使选择和剪贴板按我们需要的方式工作"
  set selection=inclusive clipboard-=unnamed clipboard-=unnamedplus
  "备份未命名的寄存器"
  let reg_save = @@
  "复制相关文本,并设置视觉选区,重用文本,需要更换"
  if a:type =~ '^\d\+$'
    " 数字,则选择那么多行"
    silent exe 'normal! V'.a:type.'$y'
//从选择行开始.
  elseif a:type =~ '^.$'
    "类型是'v','V',或'<C-V>'(i.e.0x16),则重选"
    silent exe "normal! `<" . a:type . "`>y"
  elseif a:type == 'line'
    "行动作"
    silent exe "normal! '[V']y"
  elseif a:type == 'block'
    "块动作"
    silent exe "normal! `[\<C-V>`]y"
  else
    "符动作"
    silent exe "normal! `[v`]y"
  endif
  "调用用户定义的函数,传递未命名寄存器内容给它"
  let repl = s:{a:algorithm}(@@)
  "如果函数返回值,则替换文本"
  if type(repl) == 1
    " 将替换文本放入无名寄存器中,并根据复制类型,设置为按字符,按行或按块选择,"
    call setreg('@', repl, getregtype('@'))
    "重选可视区,并粘贴"
    normal! gvp
  endif
  "恢复保存的设置和寄存器值"
  let @@ = reg_save
  let &selection = sel_save
  let &clipboard = cb_save
endfunction

function! s:ActionOpfunc(type)
  return s:DoAction(s:encode_algorithm, a:type)
//监听后,调用
endfunction

function! s:ActionSetup(algorithm)
  let s:encode_algorithm = a:algorithm
//算法动作.
  let &opfunc = matchstr(expand('<sfile>'), '<SNR>\d\+_').'ActionOpfunc'
//后续命令.
endfunction

function! MapAction(algorithm, key)
  exe 'nnoremap <silent> <Plug>actions'    .a:algorithm.'?:<C-U>call <SID>ActionSetup("'.a:algorithm.'")<CR>g@'
//安装程序.最后发送g@,然后vim监听动作命令.
  exe 'xnoremap <silent> <Plug>actions'    .a:algorithm.'?:<C-U>call <SID>DoAction("'.a:algorithm.'",visualmode())<CR>'
//可视模式
  exe 'nnoremap <silent> <Plug>actionsLine'.a:algorithm.'?:<C-U>call <SID>DoAction("'.a:algorithm.'",v:count1)<CR>'
//行模式.
//创建内部映射.将之映射到键序列.
  exe 'nmap '.a:key.'  <Plug>actions'.a:algorithm
  exe 'xmap '.a:key.'  <Plug>actions'.a:algorithm
  exe 'nmap '.a:key.a:key[strlen(a:key)-1].' <Plug>actionsLine'.a:algorithm
endfunction

MapAction(函数,键),<leader>r反转串.<leader>u打开链接.<leader>M计算md5.

function! s:ReverseString(str)
  let out = join(reverse(split(a:str, '\zs')), '')
  "反转串"
  let out = substitute(out, '^\n', '', '')
  return out
endfunction
call MapAction('ReverseString', '<leader>r')
//
function! s:OpenUrl(str)
  silent execute "!firefox ".shellescape(a:str, 1)
  redraw!
endfunction

call MapAction('OpenUrl','<leader>u')
//
function! s:ComputeMD5(str)
  let out = system('md5sum |cut -b 1-32', a:str)
  "删除尾空行"
  let out = substitute(out, '\n$', '', '')
  return out
endfunction
call MapAction('ComputeMD5','<leader>M')