**(?i)\\b([a-z]+)\\b(?:\\s+\\1\\b)+**
I understand what each symbol means but when the symbols are combined...I can't figure out. The confusion part is (?:\s+\1\b)+. What does it mean??? Can you explain to me?? Thanks for your time!
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Individual parts of (?:\s+\1\b)+ have the following meaning:
(?:...)- a non-capturing group. It contains:\s+- a non-empty sequence of white space chars.\1- a backreference to capturing group #1 (\b([a-z]+)\b). It means that you want to have here just the same chars (the repeated word) which has been just captured.\b- a word boundary, in this case transition from word area to space area.
After the whole above group there is a + sign, meaning that you want to
match as many repeating words as possible.
Valdi_Bo
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