Regular Expressions 101

^start of line

Non-Capturing Group(?:Tweak|Dev|Feature)

1st AlternativeTweak

Tweakthe literal text Tweak (case sensitive)

2nd AlternativeDev

Devthe literal text Dev (case sensitive)

3rd AlternativeFeature

Featurethe literal text Feature (case sensitive)

\s+any whitespace character, repeated at least once

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:\s+(?:#?\w+|http\S*)){3,}

{3,}repeats the group contents below at least 3 times:

\s+any whitespace character, repeated at least once

Non-Capturing Group(?:#?\w+|http\S*)

1st Alternative#?\w+

#?optionally matches the literal # (35₁₀ / 43₈ / 23₁₆)

\w+any word character, repeated at least once

2nd Alternativehttp\S*

httpthe literal text http (case sensitive)

\S*any non-whitespace character, repeated any number of times

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

$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

^(?:Tweak|Dev|Feature)\s+-(?:\s+(?:#?\w+|http\S*)){3,}\.?$

New

Tweak - this should be correct.
Feature - my feature having a special character as #123.
Dev - this should also work https://regex101.com/

Dev-Hello world
incorrect
Tweak- it should be wrong
feature - it is also incorrect