Merge branch 'master' into b/fix-unary-binary-operator-printing

Author: shashi

Project.toml

@@ -1,7 +1,7 @@
 name = "SymbolicUtils"
 uuid = "d1185830-fcd6-423d-90d6-eec64667417b"
 authors = ["Shashi Gowda"]
-version = "1.0.3"
+version = "1.0.4"
 
 [deps]
 AbstractTrees = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"

src/types.jl

@@ -782,10 +782,11 @@ function show_call(io, f, args)
     if Base.isunaryoperator(fname) && len_args == 1
         print(io, "$fname")
         print_arg(io, first(args), paren=true)
-    elseif Base.isbinaryoperator(fname) && len_args == 2
-        print_arg(io, first(args), paren=true)
-        print(io, " $fname ")
-        print_arg(io, last(args), paren=true)
+    elseif Base.isbinaryoperator(fname) && len_args > 1
+        for (i, t) in enumerate(args)
+            i != 1 && print(io, " $fname ")
+            print_arg(io, t, paren=true)
+        end
     else
         if issym(f)
             Base.show_unquoted(io, nameof(f))

test/basics.jl

@@ -1,4 +1,4 @@
-using SymbolicUtils: Symbolic, Sym, FnType, Term, Add, Mul, Pow, symtype, operation, arguments, issym, isterm, BasicSymbolic
+using SymbolicUtils: Symbolic, Sym, FnType, Term, Add, Mul, Pow, symtype, operation, arguments, issym, isterm, BasicSymbolic, term
 using SymbolicUtils
 using IfElse: ifelse
 using Setfield
@@ -173,6 +173,7 @@ end
     @syms a b c
     @test repr(a+b) == "a + b"
     @test repr(-a) == "-a"
+    @test repr(term(-, a; type = Real)) == "-(a)"
     @test repr(-a + 3) == "3 - a"
     @test repr(-(a + b)) == "-a - b"
     @test repr((2a)^(-2a)) == "(2a)^(-2a)"