Simon Willison’s Weblog

Unicode Regular Expressions. [a \U00010450] Match “a” or U+10450 SHAVIAN LETTER PEEP

Posted 3rd March 2004 at 3:06 am

Recent articles

Video: Building a tool to copy-paste share terminal sessions using Claude Code for web - 23rd October 2025
Dane Stuckey (OpenAI CISO) on prompt injection risks for ChatGPT Atlas - 22nd October 2025
Living dangerously with Claude - 22nd October 2025

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