Incorrect warning: `+' after local variable is interpreted as binary operator
|ruby -v:||ruby 1.9.3p374 (2013-01-15 revision 38858) [x86_64-darwin12.2.1]||Backport:|
puts '' +''
generates an invalid warning when executed with "ruby -w" which (a) implies a syntactical ambiguity where there is none, and (b) refers to a "local variable" of which there are none.
puts '' + ''
produce no warnings.