CODEWITHSUNDEEP
regex
Scott Bartell
Scott Bartell

Reputation: 2840

RegEx Lowercase Letters and Hyphen

Can someone help me write a regex that matches only all lower case letters plus hyphens.

Example: this-page-name

Upvotes: 13

Views: 20828

Answers (2)

redben
redben

Reputation: 5696

Mike Clark's pattern [a-z\-]+ would match -start-dash-double-dash---and-end-dash-

Maybe ^[a-z]+(-[a-z]+)*$ is little bit more precise.

Upvotes: 33

Mike Clark
Mike Clark

Reputation: 11979

This will catch 1 or more characters that are either lowercase a-z or the hyphen

[a-z\-]+

The trick is to escape the hyphen with a backslash.

For completeness, you can add an appropriate boundary such as \b on each end to signify a full word match, or ^ and $ to make it match a full line.

Upvotes: 26

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