如何在 VI 编辑器中标记/突出显示重复行? [英] How can I mark/highlight duplicate lines in VI editor?

问题描述

您将如何标记缓冲区中与其他行完全相同的所有行?通过标记它们，我的意思是突出它们或添加字符或其他东西.我想保留缓冲区中行的顺序.

How would you go about marking all of the lines in a buffer that are exact duplicates of other lines? By marking them, I mean highlighting them or adding a character or something. I want to retain the order of the lines in the buffer.

之前:

foo
bar
foo
baz

之后:

foo*
bar
foo*
baz

推荐答案

作为前单行:

:syn clear Repeat | g/^(.*)
ze\%(.*
)*1$/exe 'syn match Repeat "^' . escape(getline('.'), '".^$*[]') . '$"' | nohlsearch

这使用 Repeat 组来突出显示重复的行.

This uses the Repeat group to highlight the repeated lines.

分解:

• syn clear Repeat :: 删除任何以前找到的重复项
• g/^(.*) ze\%(.* )*1$/ :: 用于文件后面重复的任何行
  • 正则表达式
    • ^(.*) :: 整行
    • ze :: end of match - 验证模式的其余部分，但不使用匹配的文本(正向前瞻)
    • \%(.* )* :: 任意数量的完整行
    • 1$ ::匹配的整行的整行重复
    • syn clear Repeat :: remove any previously found repeats
    • g/^(.*) ze\%(.* )*1$/ :: for any line that is repeated later in the file
      • the regex
        • ^(.*) :: a full line
        • ze :: end of match - verify the rest of the pattern, but don't consume the matched text (positive lookahead)
        • \%(.* )* :: any number of full lines
        • 1$ :: a full line repeat of the matched full line
        • exe :: 将给定的字符串作为 ex 命令执行
        • getline('.') :: g//
        匹配的当前行内容
        • escape(..., '".^$*[]') :: 用反斜杠转义给定的字符以生成合法的正则表达式
        • syn match Repeat "^...$" :: 将给定字符串添加到 Repeat 语法组
        • exe :: execute the given string as an ex command
        • getline('.') :: the contents of the current line matched by g//
        • escape(..., '".^$*[]') :: escape the given characters with backslashes to make a legit regex
        • syn match Repeat "^...$" :: add the given string to the Repeat syntax group

        Justin 的非正则表达式方法可能更快:

        Justin's non-regex method is probably faster:

        function! HighlightRepeats() range
          let lineCounts = {}
          let lineNum = a:firstline
          while lineNum <= a:lastline
            let lineText = getline(lineNum)
            if lineText != ""
              let lineCounts[lineText] = (has_key(lineCounts, lineText) ? lineCounts[lineText] : 0) + 1
            endif
            let lineNum = lineNum + 1
          endwhile
          exe 'syn clear Repeat'
          for lineText in keys(lineCounts)
            if lineCounts[lineText] >= 2
              exe 'syn match Repeat "^' . escape(lineText, '".^$*[]') . '$"'
            endif
          endfor
        endfunction
        
        command! -range=% HighlightRepeats <line1>,<line2>call HighlightRepeats()
        

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