JudyLFirstEmpty(3) on Linux
The text ca2943ba250c, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it. The page shows this text now.
C library for creating and accessing a dynamic array of words, using any value of a word as an index