What version are you running?
0.7.11
Describe the enhancement and the motivation for it.
Adding a flag to allow users to explicitly disable the open browser default from the .reviewboardrc file under a repository (such as rbt post --no-browser). The motivation is to offer users the capability of overriding configs like OPEN_BROWSER which potentially breaks the user experience of their development tooling if they were working with a repository that contains a .reviewboardrc file. Perhaps adding overrides can also apply to other rbt arguments.

Please provide any additional information below.