Merge remote-tracking branch 'origin/master' into s/fix-infinite-loop

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

@@ -780,7 +780,7 @@ end
 
 function show_call(io, f, args)
     fname = istree(f) ? Symbol(repr(f)) : nameof(f)
-    binary = Base.isbinaryoperator(fname)
+    binary = Base.isbinaryoperator(fname) && length(args) > 1
     if binary
         for (i, t) in enumerate(args)
             i != 1 && print(io, " $fname ")

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)"