regex - 如何更改搜索的输出消息？

Question

我想在搜索完成后更改输出消息。

pe 当我使用很长的正则表达式进行搜索并且没有找到任何内容时 vim 返回消息E486: Pattern not found: .... very long regex code ...

我想捕获输出并更改此消息。我怎样才能做到这一点？

Answer 1

该:s[ubstitute]命令具有/e抑制错误的标志，但 AFAIK 甚至:silent /foo不会抑制该错误消息。好吧，你不想压制它，无论如何，你想“捕获”它并展示其他东西。

像每种语言一样，vimscript 也有自己的try/catch. 您可以在页面下方阅读有关它的内容:h :try。

try
  /foo
catch /^Vim\%((\a\+)\)\=:E486/
  let @n = v:exception
  echo "No luck!"
endtry

您可以将您包装try/catch在一个函数noremap中/

Answer 2

我认为您正在谈论在 vimscript 中捕获错误消息。

然后你可能想签出catch：:h catch

                    *:cat* *:catch* *E603* *E604* *E605*
:cat[ch] /{pattern}/    The following commands until the next |:catch|,
            |:finally|, or |:endtry| that belongs to the same
            |:try| as the ":catch" are executed when an exception
            matching {pattern} is being thrown and has not yet
            been caught by a previous ":catch".  Otherwise, these
            commands are skipped.
            When {pattern} is omitted all errors are caught.
            Examples: >
        :catch /^Vim:Interrupt$/    " catch interrupts (CTRL-C)
        :catch /^Vim\%((\a\+)\)\=:E/    " catch all Vim errors
        :catch /^Vim\%((\a\+)\)\=:/ " catch errors and interrupts
        :catch /^Vim(write):/       " catch all errors in :write
        :catch /^Vim\%((\a\+)\)\=:E123/ " catch error E123
        :catch /my-exception/       " catch user exception
        :catch /.*/         " catch everything
        :catch              " same as /.*/

在try块中进行搜索，然后您可以捕获错误消息，然后做任何您想做的事情。