https://bugs.winehq.org/show_bug.cgi?id=55710
--- Comment #16 from Dmitry Timoshkov dmitry@baikal.ru --- (In reply to Zeb Figura from comment #15)
(In reply to Dmitry Timoshkov from comment #9)
Since wine-staging doesn't use --backend=git-am by default and some of the patches in the staging tree have trailing spaces it's impossible to perform a proper git bisect to find the offending patchset.
It doesn't use it by default, but is there anything preventing you from using --backend=git-am manually?
Although I mentioned it already, probably I wasn't clear enough: specifying --backend=git-am leads to a failure to apply some of the staging patches. Probably patches with trailing spaces went in unnoticed because you don't use git-am which errors out in that case. Since the staged patches are supposed to be sent upstream at some point, they should be ready from the start, so I'd suggest to use --backend=git-am by default to spot such things earlier.