Linus raised an interesting issue on the list. Nobody in the git tool-chain warns if somebody added a non-breaking space (UTF-8 c2a0) to the source code. A patch that has such a whitespace is not warned with --whitespace=warn, "git diff" will not highlight nor "git diff --check" will not complain.
But of course, gcc will complain.
Wrote a quickie 4-patch series to address this issue, but both Linus and I agree that it is dubious if git should be doing this as part of "whitespace breakage detection and fix" machinery.
Commented on a few topics.
Queued 16 patches from 7 people.