Merge pull request #21124 from JuliaLang/jb/unarysubtype

fix unary `<:` and `>:` call syntax

Author: JeffBezanson

src/julia-syntax.scm

@@ -1586,7 +1586,7 @@
 
 ;; convert an operator parsed as (op a b) to (call op a b)
 (define (syntactic-op-to-call e)
-  `(call ,(car e) ,(expand-forms (cadr e)) ,(expand-forms (caddr e))))
+  `(call ,(car e) ,@(map expand-forms (cdr e))))
 
 ;; wrap `expr` in a function appropriate for consuming values from given ranges
 (define (func-for-generator-ranges expr range-exprs)

test/parse.jl

@@ -1056,3 +1056,5 @@ macro make_f21054(T)
 end
 @eval @make_f21054 $Array
 @test isa(f21054, Function)
+g21054(>:) = >:2
+@test g21054(-) == -2