Merge pull request #92 from JuliaSymbolics/s/fix-lf

fix literal functions with > 2 arguments

Author: shashi

src/types.jl

@@ -144,7 +144,7 @@ Base.show(io::IO, v::Sym) = print(io, v.name)
 # Maybe don't even need a new type, can just use Sym{FnType}
 struct FnType{X<:Tuple,Y} end
 
-(f::Sym{<:FnType})(args...) = term(f, args...)
+(f::Sym{<:FnType})(args...) = Term{promote_symtype(f, symtype.(args)...)}(f, [args...])
 
 function (f::Sym)(args...)
     error("Sym $f is not callable. " *

test/basics.jl

@@ -26,6 +26,10 @@ using Test
         @test_throws ErrorException g(b, a)
 
         @test symtype(g(b, f)) === Int
+
+        # issue #91
+        @syms h(a,b,c)
+        @test isequal(h(1,2,3), h(1,2,3))
     end
 end