diff --git a/base/exports.jl b/base/exports.jl
index 2606a4ae9bf85..79f69ce9fb465 100644
--- a/base/exports.jl
+++ b/base/exports.jl
@@ -216,7 +216,6 @@ export
     .-,
     .*,
     ./,
-    ++,
     .<,
     .<=,
     .≤,
diff --git a/base/operators.jl b/base/operators.jl
index 9ceb4fc619c48..a99f2df8d81ac 100644
--- a/base/operators.jl
+++ b/base/operators.jl
@@ -424,7 +424,7 @@ getindex(p::Pair,i::Real) = getfield(p, convert(Int, i))
 reverse(p::Pair) = Pair(p.second, p.first)
 
 # some operators not defined yet
-global //, >:, <|, hcat, hvcat, ++, ⋅, ×, ∈, ∉, ∋, ∌, ⊆, ⊈, ⊊, ∩, ∪, √, ∛
+global //, >:, <|, hcat, hvcat, ⋅, ×, ∈, ∉, ∋, ∌, ⊆, ⊈, ⊊, ∩, ∪, √, ∛
 
 this_module = current_module()
 baremodule Operators
@@ -446,7 +446,6 @@ export
     .-,
     .*,
     ./,
-    ++,
     .<,
     .<=,
     .==,
@@ -504,7 +503,7 @@ export
     ctranspose,
     call
 
-import ..this_module: !, !=, $, %, .%, &, *, +, -, .!=, .+, .-, .*, ./, ++, .<, .<=, .==, .>,
+import ..this_module: !, !=, $, %, .%, &, *, +, -, .!=, .+, .-, .*, ./, .<, .<=, .==, .>,
     .>=, .\, .^, /, //, <, <:, <<, <=, ==, >, >=, >>, .>>, .<<, >>>,
     <|, |>, \, ^, |, ~, !==, ===, >:, colon, hcat, vcat, hvcat, getindex, setindex!,
     transpose, ctranspose, call,
diff --git a/base/show.jl b/base/show.jl
index 29186081f3bf6..17148c799061f 100644
--- a/base/show.jl
+++ b/base/show.jl
@@ -513,7 +513,7 @@ function show_unquoted(io::IO, ex::Expr, indent::Int, prec::Int)
         # unary operator (i.e. "!z")
         elseif isa(func,Symbol) && func in uni_ops && length(func_args) == 1
             show_unquoted(io, func, indent)
-            #for safety, always wrap a call on an operator in parens
+            #always wrap a call on an operator in parens
             arg_is_op = func_args[1] in union(uni_ops, expr_infix_any)
             if arg_is_op || isa(func_args[1], Expr)
                 show_enclosed_list(io, '(', func_args, ",", ')', indent, func_prec)
diff --git a/base/string.jl b/base/string.jl
index 76753ece65ea7..1542296b8280d 100644
--- a/base/string.jl
+++ b/base/string.jl
@@ -78,7 +78,6 @@ sizeof(s::AbstractString) = error("type $(typeof(s)) has no canonical binary rep
 eltype{T<:AbstractString}(::Type{T}) = Char
 
 (*)(s1::AbstractString, ss::AbstractString...) = string(s1, ss...)
-(++)(s1::AbstractString, ss::AbstractString...) = string(s1, ss...)
 (^)(s::AbstractString, r::Integer) = repeat(s,r)
 
 length(s::DirectIndexString) = endof(s)