id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,difficulty 816,hygiene problem using `map' with prefixed `scheme' import,Moritz Heidkamp,,"The compiler seems to rewrite calls to {{{map}}} in an unhygienic fashion. This surfaces when importing the {{{scheme}}} module with a prefix into a fresh module. The interpreter handles it fine though. Example: {{{ (module foo () ;; the `quote' import is necessary due to another hygiene problem ;; I'm investigating right now (import (only scheme quote)) (import (prefix scheme ~)) (~map (~lambda (y) y) x) ) }}} This leads to the following warnings by {{{csc}}} (tested with 4.7.0.3-st and current master): {{{ Warning: reference to possibly unbound identifier `set!' Warning: suggesting one of: Warning: (import r5rs-null) Warning: (import r4rs-null) Warning: (import scheme) Warning: (import r4rs) Warning: reference to possibly unbound identifier `cons' Warning: suggesting one of: Warning: (import scheme) Warning: (import r4rs) Warning: reference to possibly unbound identifier `g14' Warning: reference to possibly unbound identifier `and' Warning: suggesting one of: Warning: (import r5rs-null) Warning: (import r4rs-null) Warning: (import scheme) Warning: (import r4rs) Warning: reference to possibly unbound identifier `if' Warning: suggesting one of: Warning: (import r5rs-null) Warning: (import r4rs-null) Warning: (import scheme) Warning: (import r4rs) Warning: reference to possibly unbound identifier `map-loop' Warning: reference to possibly unbound identifier `x' Warning: reference to possibly unbound identifier `g25' Warning: reference to possibly unbound identifier `g19' Warning: reference to possibly unbound identifier `g18' Warning: reference to possibly unbound identifier `g17' Warning: reference to possibly unbound identifier `let' Warning: suggesting one of: Warning: (import r5rs-null) Warning: (import r4rs-null) Warning: (import scheme) Warning: (import r4rs) Error: module unresolved: foo }}}",defect,closed,minor,4.9.0,compiler,4.7.x,fixed,,,