[ruby/reline] Disable dialog proc if TERM=dumb (https://github.com/ruby/reline/pull/663)
https://github.com/ruby/reline/commit/4928e06a24
[ruby/reline] Disable dialog proc if TERM=dumb
(https://github.com/ruby/reline/pull/663)
https://github.com/ruby/reline/commit/4928e06a24