Match a specific word if it contains an uppercase letter

Question

What's the PCRE2 regular expression syntax to match a specific word if and only if it contains at least one uppercase letter? I can currently match both conditions individually (^foobar$ or [A-Z]+), but don't know how to combine as a compound conditional. Expected results for testing "foobar":

✅ Foobar    ✅ fooBAR    ❌ foobar    ❌ Foobars   ❌ sFoobar

What language are you using? – Andrej Kesely Mar 04 '23 at 19:02 — Andrej Kesely, Mar 04 '23 at 19:02
@AndrejKesely - updated with PCRE2, thanks! – anthumchris Mar 14 '23 at 17:45 — anthumchris, Mar 14 '23 at 17:45

score 0 · Accepted Answer · edited Mar 04 '23 at 20:45

0

Positive lookahead assertions (?=...) and local options (?i:...) can be used:

^(?=.*[A-Z])(?i:foobar)$

Tests: https://regex101.com/r/JdQlaQ/1

edited Mar 04 '23 at 20:45

anthumchris

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answered Mar 04 '23 at 19:23

rob mayoff

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Match a specific word if it contains an uppercase letter

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