Comment 2 for bug 701395

Thanks for your bug report! While you're right that the error messages are not as clear as they could be, this is due to the underlying option parsing system that I use; also when the help is read carefully, it should be clear. That's why I consider it outside the scope of disper, sorry. This holds for the problem with the single dash, as well as the equal sign.

That the error about the garbage metamode occurs is a more serious problem though; this should not happen just because of a small mistake. I'll have to test it with a multiple monitor setup to see if this problem occurs more generally.
Also display names could be checked before disper executes anything, that would be a good idea.

From here this bug will focus on the garbage metamode problem, and possible validation of display names.