Regarding the "Get rid of unused function ly:lexer-keywords": that one
was added with
commit 1ae6f5710e714f13da1bfbfbd840835316618d1f
Author: Han-Wen Nienhuys <han...@xs4all.nl>
Date: Thu Dec 14 14:10:56 2006 +0100
add ly:lexer-keywords to make keyword extraction easier and exact.
but there appears to be no commit that ever used it. The sentiment
expressed in the commit message appears reasonable, and with the
alternative proposal in issue 5946, the implementation comes basically
free. Do you remember what you were planning to do with it at the time
you committed it?
https://codereview.appspot.com/549920043/
