setup: fail if we cannot determine the version number If running hg fails, exit the setup script unsuccessfully, rather than proceeding to use a bogus version of "+0-". Using an invalid version number causes various tests to fail later. Failing early makes it easier to identify the source of the problem. It is currently easy for setup.py to fail this way since it sets HGRCPTH to the empty string before running "hg", which may often disable extensions necessary to interact with the local repository.

smartset: fix generatorset.last() to not return the first element (issue5609)

strip: respect the backup option in stripcallback The backup option was mistakenly ignored. It should be respected. Thanks Martin von Zweigbergk for finding this out!

py3: use pycompat.bytestr() to convert str to bytes

py3: pass the memoryview object into bytes() to get the value

py3: use pycompat.bytestr instead of str

py3: use '%d' to convert integers to bytes

py3: slice over bytes to prevent getting it's ascii value

py3: use pycompat.strkwargs() to convert kwargs keys to str

py3: use r'' to prevent the addition of b'' by transformer There are cases in opts handling in debugcommands.py where we don't need to convert opts keys back to bytes as there are some handful cases and no other function using opts value. Using r'', we prevent the transformer to add a b'' which will keep the value str.