templatefilters: unroll handling of None/False/True It doesn't make sense to use a dict here.

templatefilters: drop callable support from json() This backs out ae5447de4c11. A callable should be evaluated beforehand by templater.runsymbol().

ui: use bytes IO and convert EOL manually in ui.editor() Text IO sucks on Python 3 as it must be a unicode stream. We could introduce a wrapper that converts unicode back to bytes, but it wouldn't be simple to handle offsets transparently from/to underlying IOBase API. Fortunately, we don't need to process huge text files, so let's stick to bytes IO and convert EOL in memory.

util: add helper to convert between LF and native EOL See the next patch for why.

util: extract pure tolf/tocrlf() functions from eol extension This can be used for EOL conversion of text files.

pycompat: provide bytes os.linesep

pycompat: introduce identity function as a compat stub I was sometimes too lazy to use 'str' instead of 'lambda a: a'. Let's add a named function for that purpose.

test-blackbox: glob away quoting differences on Windows Windows uses double quotes in these places.

test-subrepo: update output for Windows

test-serve: disable unfixable tests on Windows These tests would run if hghave.has_serve() were enabled on Windows. Windows has no issue allowing an unpriviledged process to open port 13, so it doesn't abort. The other tests are related to how MSYS tries to be helpful and converts Unix constructs to the Windows equivalent. There isn't any way to disable this behavior, though it supposedly doesn't happen if the exe is linked against the MSYS library.