hi, here's a 'twilight zone' compile bug (happened in sciboo) 2 files, """t1.boo""" def Main(argv as (string)): Toto.Initialize() """t2.boo""" class Toto: static def Initialize(): _toto = def(s as string): refs = s.Split(char(',')) for d in refs: print d _toto("abc, def") _toto2 = def(s as string): return '_' + s[0:1].ToLower() + s[1:] print _toto2("Allo") --------- booc t1.boo t2.boo -output tt.exe >tt.exe _allo >Exit code: 0 ---------- comment out the "_toto2" part in t2.boo and we get expected results: booc t1.boo t2.boo -output tt.exe >tt.exe abc def >Exit code: 0 ------ or, (change order t1,t2 => t2,t1) and we get expected results booc t2.boo t1.boo -output tt.exe >tt.exe abc def _allo >Exit code: 0

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