eh: a minimalist vi-like editor

Lobsters reports that eh is a minimalist vi‑like editor written in C, preserving the core vi editing model while adding UTF‑eight support, regular‑expression search and replace, shell filters, and multi‑level undo and redo. An earlier version of the program won a spot in the twenty‑eighth International Obfuscated C Code Contest in two thousand twenty‑four, earning the “Nice accent eh‑ward” distinction.

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