Regex Immediate Negative Lookahead

Question

I want to match "foo 6" but not "foo 6</end>" . At the moment I have the expression: foo\\s\\d+(?!.*</end>) . The problem is that it will also discard foo 6 if there is an </end> tag way later on in the string. ie

foo 6 Matches - This is correct

foo 6</end> Does not match - This is correct

foo 6 word word word word number word number word</end> Does not match - This is incorrect as foo 6 should still match here.

The regex should allow for the 3 above scenarios to be correct

Answer 1

根据您的解释，您不需要.* ：

foo\s\d+(?!</end>)