"man" -> "Man" substitution happens even in search patterns, elsewhere in commandline, etc.

[ashipkowski]

This appears to be due to the nature of cabbrev; possibly useful in that it catches !man, but a problem when it interferes elsewhere. There is documentation on how to fix this around, so I may give it a try, though it's much faster for me to simply comment out the cabbrev use.

[smoser]

This was bugging me for quite some time, wasn't sure what was doing it.
The place I most frequently see this was just in typing ':!man grep' which gets fixed to ":!Man grep", which then doesn't even work.

Its very annoying that you type:

:!echo man, that does not seem right.

And it gets fixed to:

:!echo Man, that does not seem right.