range.c (inspect_range): omit beginless "nil"
except the special case (nil..nil).
(nil..nil)
(1..).inspect #=> "1.." (..5).inspect #=> "..5" (nil..nil).inspect #=> "nil..nil"
[Bug #15745]
range.c (inspect_range): omit beginless "nil"
except the special case
(nil..nil)
.[Bug #15745]