英文:
Regex should not match for two or more consecutive dashes
问题
我有以下正则表达式：
\p{Alpha}[\p{Alnum}-]+\p{Alnum}
使用这个正则表达式，文本应该以一个字母字符开头，然后可以由字母数字和短横线组成。
但是我不想要两个或更多连续的短横线。我可以用什么正则表达式来处理这种情况？
谢谢大家
Frank
英文:
I have the following regex:
\p{Alpha}[\p{Alnum}-]+\p{Alnum}
With this, the text should start with an alpha character and could be followed by alphanumerics and dashes.
But I don t want to have two or more consecutive dashes. What is the right regex that I can use for this case?
Thanks to all
Frank
答案1
得分: 4
你可以考虑使用这个正则表达式解决方案：
^\p{Alpha}\p{Alnum}*(?:-\p{Alnum}+)*$
正则表达式详情：
^：开始\p{Alpha}：匹配一个字母\p{Alnum}*：匹配0个或多个字母数字字符(?:-\p{Alnum}+)*：匹配-后跟1个或多个字母数字字符。重复此组0次或多次$：结束
英文:
You may consider this regex solution:
^\p{Alpha}\p{Alnum}*(?:-\p{Alnum}+)*$
RegEx Details:
^: Start\p{Alpha}: Match an alphabet\p{Alnum}*: Match 0 or more alphanumeric characters(?:-\p{Alnum}+)*: Match-followed by 1+ of alphanumeric characters. Repeat this group 0 or more times$: End
答案2
得分: -2
可能这将起作用
\p{Alpha}[\p{Alnum}-]+(?!-)\p{Alnum}
在这个模式中，(?!-) 是负向前瞻断言，确保在前一个匹配后面没有连字符。
英文:
Probably this will work
\p{Alpha}[\p{Alnum}-]+(?!-)\p{Alnum}
In this pattern, (?!-) is the negative lookahead assertion that ensures there is no dash immediately following the previous match.
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