localrepo: introduce method for explicit branch cache update Currently, localrepo.branchtags() is called in two locations to update the _branchcache dict, however branchtags() itself does not update anything, it calls branchmap() to do so. This change introduces a new updatebranchcache() method that is used by both branchmap() and the calls to update the cache.

color: handle more Windows console errors If your application is being built as a non-console application, stdout is not a valid handle and raises an exception: pywintypes.error: (6, 'DuplicateHandle', 'The handle is invalid.') Alternatively, non-console applications launched outside of a console will return None from GetStdHandle instead of raising an exception.

patchbomb: remove unneeded line continuation

cleanup: remove unused variables