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There is a question like this here asking about the first occurrence of "1" in each line, but in EditPad it doesn't work at all, even when I use the Multi-Line Search Panel.

I have Regex on, Highlight All on. All other functions are off.

  1. /^[^1\n\r]*(1)/m - highlights nothing
  2. ^[^1\n\r]*(1)/m - highlights nothing
  3. ^[^1\n\r]*(1) - finds all lines that contain "1" and highlights everything from the start of the line until the number "1". But I need only the first occurrence of "1", nothing else.

I guess that ^[^1\n\r]*(1) is one step towards the real "first occurrence", but it is not there yet.

For example, I have the number 5215681571

And I want to highlight only the first "1" in the line. The expression ^[^1\n\r]*(1) will highlight 521 which is not desirable.

I have tried also ^(^.*[^1])1 which finds every line that contains 1 and highlights everything from start until the last "1".

In stackoverflow, I have seen countless suggestions on how to achieve the first occurrence, but none of them works in EditPad. Any idea, please?

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2 回答 2

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在您尝试的模式中，您使用捕获组，前面有一个匹配项。

如果这是正则表达式引擎所支持的工具indicated as JGsoft V2，它支持使用\K来忘记迄今为止匹配的内容。

匹配除 1 或回车符或换行符之外的所有内容：

^[^\r\n1]*\K1

正则表达式演示

或匹配除 1 和垂直空格之外的所有字符\v

^[^\v1]*\K1

正则表达式演示

于 2021-08-02T07:24:10.270 回答
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除了@The Fourth Bird 的建议之外，EditPad 的 JGSoft 引擎还支持无限后视，这让您可以做到这一点（在 EPP Pro 8.2.4 中测试）：

(?<=^[^1\r\n]*)1

要捕获任何奇怪的 unicode 换行符，您还可以使用[^\p{Zl}]代替[^\r\n]，产生以下两个替代版本：

^[^\p{Zl}1]*\K1

或者

(?<=^[^1\p{Zl}]*)1
于 2021-08-02T09:07:02.727 回答