NLGTM This patch just punts on using an internal function, and that could be equally well be done without involving syntax-case.
An alternative proposal that just relies on a single external symbol in order to achieve the original design is given as Tracker issue: 5735 (https://sourceforge.net/p/testlilyissues/issues/5735/) Rietveld issue: 549510043 (https://codereview.appspot.com/549510043) Issue description: Rewrite define-session and define-session-public macros The byte compiler of Guile-2.x is not able to compile anonymous functions/closures into constants. Rewriting the macros not to rely on such constants by moving the local functions into their own function definitions is the easiest expedient. https://codereview.appspot.com/553480044/diff/557280043/scm/lily.scm File scm/lily.scm (right): https://codereview.appspot.com/553480044/diff/557280043/scm/lily.scm#newcode135 scm/lily.scm:135: (acons (quote name) (make-session-variable (quote name) value) lilypond-exports)) This is actually a purely textual replacement rather than anything more complex or hygienic. As such it does nothing that cannot equally well be achieved using defmacro: the problematic issue with the byte compiler was the internal function that was used for _avoiding_ a wholesale textual replacement. So drawing in a module that is known to be buggy and unmaintained in Guile-1.8 does not even serve a purpose here. https://codereview.appspot.com/553480044/
