templatefuncs: use evaldate() where seems appropriate This means date("today") is allowed. Also fixes evaldate() to forcibly use the custom error message if specified.

templater: factor out function that parses argument as date tuple

templatefilters: declare input type as bytes where appropriate Some test outputs changed since input is now coerced to a byte string. I think that's okay. Maybe {date} should have some readable representation?

templatefilters: allow declaration of input data type Currently filters take an unwrapped value, which should have no hybrid magic but actually it does because stringify() relies on it. The 'intype' allows us to pre-process the magic by .e.g. evalstring() keeping filter functions as simple as they are now. stringify() is ported as an example. More follow.

hgweb: use registrar to declare "websub" template filter Prepares for adding 'intype' attribute.

procutil: redirect ui.fout to stderr while stdio is protected The new behavior seems slightly nicer as we can at least read the output. And this is similar to what the sshserver is doing, so we can probably reuse protectstdio() instead of the weird hook.redirect(True) hack.

procutil: unroll uin/uout loop in protectstdio() I'll change uout to be redirected to stderr.

context: drop support for changeid of type long (API?) I don't see a reason to support type long. It's pretty much the same type as int. There was some discussion about it on the mailing list around the time of ff2f90503d64 (context: work around `long` not existing on Python 3, 2017-03-11), but I couldn't find a good reason to keep it. There was some mention of hgtk doing "repo[long(rev)]", but that was in 2012. Differential Revision: https://phab.mercurial-scm.org/D2989

lfs: drop a duplicate blob verification method

server: minor code cleanup Suggested by Yuya after 77f9e95fe3c4, this is mostly using named values for stdio descriptors. The lockfile is also opened in binary mode when reading back content from the child.