Regular Expressions 101

Pro

Character Class[\r]?

?matches at most one character from the set below:

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

Character Class[\r]?

?matches at most one character from the set below:

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

[\r]?\n[\r]?\n

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@\n

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