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-rw-r--r--src/interp/g-cndata.boot7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/interp/g-cndata.boot b/src/interp/g-cndata.boot
index 285dc570..2477c18f 100644
--- a/src/interp/g-cndata.boot
+++ b/src/interp/g-cndata.boot
@@ -232,9 +232,14 @@ condAbbrev(arglist,argtypes) ==
res
condUnabbrev(op,arglist,argtypes,modeIfTrue) ==
- #arglist ^= #argtypes =>
+ #arglist ^= #argtypes and argtypes isnt [["Tuple",t]] =>
throwKeyedMsg("S2IL0014",[op,plural(#argtypes,'"argument"),
bright(#arglist)])
+ -- fix up argument list for unary constructor taking tuples.
+ t ^= nil =>
+ categoryForm? t =>
+ [["tuple",:[unabbrev1(arg,modeIfTrue) for arg in arglist]]]
+ [["tuple",:arglist]]
[newArg for arg in arglist for type in argtypes] where newArg() ==
categoryForm?(type) => unabbrev1(arg,modeIfTrue)
arg