RegexdrillThe s flag: comments that span lines
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
Each test is a block of code. Capture the text inside every /* ... */ comment in group 1, without the comment markers. A comment can span several lines, so the dot has to match line breaks too: set the s flag. Each comment ends at the first */ after its start.
What this exercise teaches
Without the s flag the dot stops at a line break, so a comment that spans lines is never matched. The lazy .*? keeps two comments on one line apart; a greedy .* would run from the first /* to the last */.
A hint if you get stuck
Escape the stars of the markers: /\* and \*/. Between them use a lazy (.*?) so the match stops at the first closing marker, and add the s flag so the dot also matches a line break.
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