Misleading error message when initializing Dict

General Usage
,
1

The following ERROR seems to have a misleading text. Actually a , is missing before :B.
Same for Version 0.7.0-DEV.2276 .
Obviously the second colon is parsed as a binary operator.
Wouldn’t it be a good idea to disallow binary operator : or binary operators in general at the start of a line?

  | | |_| | | | (_| |  |  Version 0.6.0 (2017-06-19 13:05 UTC)
 _/ |\__'_|_|_|\__'_|  |  
|__/                   |  x86_64-redhat-linux

julia> Dict(
       :A => sin(1)
       :B => sin(2)
       )
ERROR: UndefVarError: B not defined
Stacktrace:
 [1] macro expansion at ./REPL.jl:97 [inlined]
2 
julia> parse("Dict(
              :A => sin(1)
              :B => sin(2)
              )")
:(Dict(:A => (sin(1):B => sin(2))))
3

Yes, that’s the reason for been mislead. Therefore my question and suggestion.