Convert a phrase to its acronym.
Techies love their TLA (Three Letter Acronyms)!
Help generate some jargon by writing a program that converts a long name like Portable Network Graphics to its acronym (PNG).
The buffer for the input string uses bytes 64-191 of linear memory.
You may modify this buffer in place if you wish to avoid additional memory allocations.
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We take a gentle dive into regular expressions starting with basic whitespace matching, exploring unicode, and ending with negative lookbehinds. We finish off by looking at some other approaches to Acronym including state machines.