在一个正则表达式中组合多个正则表达式组

Question

I m trying to combine multiple regex pattern groups into a single regex pattern

Demo Here

\b 
(?<CASE_UPPER>[[:upper:]]+)
(?<CASE_MIXED>[A-z]*[A-Z][A-z]*+)
(?<CASE_INITIALCAPS>[A-Z][a-z]+[A-Z]*+)
(?<PHRASE>[A-Z][\w-]*\s+[A-Z][\w-]*+)
\b

For This Text block:

I am testing to see if this works for UPPERCASE, InitialCase and mixedCase which of course is also mIxedcase. Firstword initial case should not be matched. FirstWordMixed case should be. UPPERCASE first word should be. And of course phrases that combine any combination of UPPER mixEd Initicase should be pulled as a phrase not a word which could be of course Initcase1 Initcase2 Initcase3. Finally it needs to match all sorto of Associations such as Association of First Words, Last Word for Association, Middle Word Association for Words.

It works with Single group but not working with all together.I don't know if I m doing it in a right way! Any Help would be appreciated.

Answer 1

Based on what I understood

You can use alternations | to combine the different regex

\b 
((?<CASE_UPPER>[[:upper:]]+)|
(?<CASE_INITIALCAPS>[A-Z][a-z]+[A-Z]*+)|
(?<CASE_MIXED>[A-z]*[A-Z][A-z]*+)|
(?<PHRASE>[A-Z][\w-]*(\s+[A-Z][\w-]*)+))
\b

Regex Example