Regular Expressions 101

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[\w.+]+

Match a single character present in the list below

[\w.+]+

+ Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed (greedy)

\w matches any word character (equal to [a-zA-Z0-9_])

.+ matches a single character in the list .+ (case sensitive)

Global pattern flags

g modifier: global. All matches (don't return after first match)

m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)

Your regular expression does not match the subject string.Try launching the debugger to find out why.

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