This is LLF, which either stands for Lua LaTeX Formatter or LaTeX-Like
Formatter.  I forget which.

To use it, run

    lua /path/to/llf.lua < input.tex > output.tex

It should reformat your LaTeX in a way that preserves semantic meaning,
yet has intelligent indentation levels. It might not, since it doesn't
actually parse LaTeX, rather it parses a language which is almost LaTeX,
except for the whole Turing Complete bit.

Features:

 - Understands verbatim environments
 - Might handle your pseudocode environments right
 - Won't mangle your align* or tabular environments
 - Will treat everything between ‘%noformat{’ and ‘%}noformat’
   as verbatim
 - Acts like cat(1) if it can't parse your input
 - Configure by copying llfrc.lua to ${XDG_CONFIG_HOME}/llf/llfrc.lua
   or ${HOME}/.config/llf/llfrc.lua

Dependencies:

 - lpeg    http://www.inf.puc-rio.br/~roberto/lpeg/lpeg.html
 - wcwidth https://luarocks.org/modules/aperezdc/wcwidth
 - utf8    (Should be built-in in >=5.3, not sure about other versions)

Licensed under ISC.

Please report bugs to S. Gilles <for_llf@sgilles.net>. Minimal test
cases are great. Patches are even better.