RegexdrillURL slugs
A regex exercise from Regexdrill. Solve it with a pattern box with live highlighting in your browser, checked against hidden test strings, and it is checked the moment you submit.
The task
The whole line must match. Match a URL slug: lowercase letters and digits in chunks joined by single hyphens. No hyphen at the start or end and no doubled hyphens.
What this exercise teaches
[a-z0-9]+(?:-[a-z0-9]+)* puts every hyphen between two chunks.
A hint if you get stuck
One chunk, then any number of hyphen-plus-chunk groups.
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