github/linguist — pull request #884 by jmromer (2014-01-03 21:34:35+00:00)
Title: Add tex cls extension

.cls extension for LaTeX document class files:
https://www.tug.org/TUGboat/tb28-1/tb88flynn.pdf

adds another sample to the tex samples directory:
https://github.com/jmromer/linguist/tree/add-tex-cls-extension/samples/TeX