py3: use pycompat.bytestr() in place of str()

py3: use r'' to access values from kwargs where keys are str These are the cases where either args is again passed as keyword argument or 1 or 2 elements are accessed. So it's better to add an r'' to prevent it converting to bytes rather than doing the conversion of args.

py3: convert keys of kwargs in template keywords functions to bytes This patch converts the args argument keys' to bytes wherever necessary as there are some places where either args is not used or using r'' is better or args is again passed as keyword arguments.

py3: make sure the commands name are bytes in test-devel-warnings.t

py3: replace str with bytes in isinstance() We were using str because on Python 2, str were bytes but now we have to use bytes. Otherwise the if conditions fails and we have weird results from commands on Python 3.

py3: catch binascii.Error raised from binascii.unhexlify Before Python 3, binsacii.unhexlify used to raise TypeError, now it raises binascii.Error.

shelve: allow unlimited shelved changes per name Previously, there is a 100 changes limit per name (bookmark or named branch). And the user will get "too many shelved changes named %s" when they are trying to shelve the 101th change. I hit that error message today. This limit was introduced by the shelve extension since the beginning. The function generating the names was called "gennames", under "getshelvename". There is another "gennames" under "backupfilename": def backupfilename(self): def gennames(base): yield base base, ext = base.rsplit('.', 1) for i in itertools.count(1): yield '%s-%d.%s' % (base, i, ext) "itertools.count" is an endless counter. Since the other "gennames" generates unlimited number of names, and the changeset introducing the limit (49d4919d21) does not say why the limit is useful. It seems safe to just remove the limit. The format "%02d" was kept intentionally so existing shelved changes won't break.

config: use the new '_unset' value for 'configsuboptions' This should let configsuboptions delegate all special processing of the default config value to the main 'config' method.

config: use the 'config' method in 'configsuboptions' There was unnecessary code duplication. It was getting in the way of the unification of the default value logic.

config: use the new '_unset' value for 'configpath' This should let 'configpath' delegate all special processing of the default config value to the main 'config' method.