Regular Expressions 101

Group 1(\G(?!\A)|ok)

1st Alternative\G(?!\A)

\Gstart of current search

Negative Lookahead(?!\A)

\Astart of string

2nd Alternativeok

okthe literal text ok (case sensitive)

Group 2((?:(?!ok|fe|t).)*)

Non-Capturing Group(?:(?!ok|fe|t).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!ok|fe|t)

1st Alternativeok

okthe literal text ok (case sensitive)

2nd Alternativefe

fethe literal text fe (case sensitive)

3rd Alternativet

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

.any character

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

Positive Lookahead(?=(?:(?!ok|fe).)*fe)

Non-Capturing Group(?:(?!ok|fe).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!ok|fe)

1st Alternativeok

okthe literal text ok (case sensitive)

2nd Alternativefe

fethe literal text fe (case sensitive)

.any character

fethe literal text fe (case sensitive)

Global pattern flags

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

s modifier: single line. Allows a dot to match line terminators

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(\G(?!\A)|ok)((?:(?!ok|fe|t).)*)t(?=(?:(?!ok|fe).)*fe)

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