在 vim 缩写中使用反斜杠 [英] Using backslashes in vim abbreviations

问题描述

我希望能够编写 \bit 并将其扩展为 vim 中的某些内容.但是，如何在缩写的左侧编码反斜杠?

I want to be able to write \bit and have it expand to something in vim. How do I encode a backslash in the left-hand side of an abbreviation, though?

我尝试了所有这些:

:iab \bit replacement_text
:iab <Bslash>bit replacement_text
:iab <bs>bit replacement_text

但是得到了 E474: Invalid argument 所有这些.

but got E474: Invalid argument for all of these.

map_backslash 帮助主题建议 ，但这似乎不起作用.

The map_backslash help-topic suggests <Bslash>, but this doesn't seem to work.

推荐答案

你可以在bit"上定义你的缩写，然后测试它前面是否有"，如果是，则返回新文本，或者位"否则.

You can define your abbreviation on "bit", and then test if it is preceded by "", if so, return the new text, or "bit" otherwise.

function! s:Expr(default, repl) expr
  if getline('.')[col('.')-2]=='\'
    return "\<bs>".a:repl
  else
    return a:default
  endif
endfunction

:inoreab bit <c-r>=<sid>Expr('bit', 'foobar')<cr>

这就是我在 MapNoContext().

请参阅 :h abbreviations 了解原因你问的不能直接实现.

see :h abbreviations for the reasons why what you asked can't be achieved directly.

它可以很容易地封装成这样:

It can be easily encapsulated this way:

function! s:DefIab(nore, ...) abort
  let opt = ''
  let i = 0
  while i != len(a:000)
    let arg = a:000[i]
    if arg !~? '<buffer>\|<silent>'
      break
    endif
    let opt .= ' '.arg
    let i += 1
  endwhile

  if i+2 != len(a:000)
    throw "Invalid number of arguments"
  endif
  let lhs = a:000[i]
  let rhs = a:000[i+1]

  exe 'i'.a:nore.'ab'.opt.' '.lhs.' <c-r>=<sid>Expr('.string(lhs).', '.string(rhs).')<cr>'
endfunction

command! -nargs=+ InoreabBSlash call s:DefIab('nore', <f-args>)

并用一个简单的:

InoreabBSlash <buffer> locbit foobar

或

InoreabBSlash bit foobar

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