I want to match [abcDe] but not [abcde]. I used (?=\[([^\[\]]*)\]) to match all between brackets, but then I tried [A-Z]+(?=\[([^\[\]]*)\]) to only match between brackets when it contains an uppercase and it doesn't work.
Does anyone know how to solve this ?
You might use
\[[^][A-Z]*[A-Z][^][]*]
The pattern matches:
\[ Match the opening square bracket[^][A-Z]* Optionally repeat matching any char except [ ] or an uppercase char[A-Z] Match a single uppercase char[^][]* Optionally repeat matching any char except [ ]] Match the closing square bracketYou don't specify the regex flavor but this could work:
(?<=\[)[a-zA-Z]*[A-Z][a-zA-Z]*(?=\])
(?<=\[) - behind me is an opening bracket[a-zA-Z]* - allow upper or lower case chars[A-Z] - require one uppercase char[a-zA-Z]* - allow upper or lower case chars(?=\]) - ahead of me is a closing bracket