Regular Expressions 101

Pro

^start of line

Group 1((?:(?!\s\s).)+)

Non-Capturing Group(?:(?!\s\s).)+

+repeats the group contents below at least once:

Negative Lookahead(?!\s\s)

\sany whitespace character

.any character (except for line terminators)

Non-Capturing Group(?:\s){4,}

{4,}repeats the group contents below at least 4 times:

\sany whitespace character

Group 2((?:(?!\s\s).)+)

Non-Capturing Group(?:(?!\s\s).)+

+repeats the group contents below at least once:

Negative Lookahead(?!\s\s)

\sany whitespace character

.any character (except for line terminators)

Non-Capturing Group(?:\s){4,}

{4,}repeats the group contents below at least 4 times:

\sany whitespace character

Group 3((?:.(?!\s\s))+)

Non-Capturing Group(?:.(?!\s\s))+

+repeats the group contents below at least once:

.any character (except for line terminators)

Negative Lookahead(?!\s\s)

\sany whitespace character

$end of line

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

Regular Expression

^((?:(?!\s\s).)+)(?:\s){4,}((?:(?!\s\s).)+)(?:\s){4,}((?:.(?!\s\s))+)$

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Applications x y z                    7 days          6 days
Applications x y z                    7 days          6 days        5 days