tests: check patchbomb with a non-ascii commit message This fails on Python 3 but gets fixed in the next changeset.

formatter: fix handling of None value in templater mapping For historical reasons, None in mapping dict means there's no such keyword, and falls back to b"". That's fine in log templates where mapping item is generally a callable returning a value (which may be None,) but the formatter directly puts an "evaluated" value in the mapping. So the None value has to be lifted to wrappedvalue(None) to avoid confusion in the template engine.

config: add support for defaultvalue of list of printable elements

config: fix -Tjson to not crash due to unsupported defaultvalue types Maybe it isn't great to ignore unsupported types at all, but otherwise "hg config -Tjson" would crash.

tests: handle Message-Id email header possible wrapping The "Message-Id" header will get wrapped with a new line when exceeding 75 characters on Python 3 (see changeset 7d4f2e4899c5 introducing usage of email.header.Header.encode and respective doc). This will occur in an unpredictable manner depending on the hostname's length. To make the test output consistent across Python versions and hostname configuration, we add a filter to unwrap this header value.

py3: leverage pycompat.long

packaging: remove version info from Breaks+Replaces in Debian package The versioned Breaks: and Replaces: cause problem when trying to install our package over the one in Debian. $ sudo apt install ./packages/debian-buster/mercurial_5.2~rc0+15-buster-a2ff3aff81d2_amd64.deb Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'mercurial' instead of './packages/debian-buster/mercurial_5.2~rc0+15-buster-a2ff3aff81d2_amd64.deb' Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: mercurial : Breaks: mercurial-common (< 5.2~rc0+15-buster-a2ff3aff81d2) but 5.2~rc0-1 is to be installed E: Unable to correct problems, you have held broken packages. Removing version information resolves the situation.

py3: fix generated non-ascii message in test-notify.t The resulting "Subject:" header contains an encoded word in Python 3 so we have to add distinct outputs for Python 3 but underlying values are the same: >>> from email.header import decode_header >>> decode_header('=?utf-8?b?w6AuLi4=?=') [(b'\xc3\xa0...', 'utf-8')]

py3: decode encoding literal before passing to .decode() bytes.decode(<encoding>) wants an str as "encoding" parameter, it raises a TypeError if given a bytestring. encoding.encoding and encoding.fallbackencoding are bytes values.

py3: decode payload of notify email This fixes one UnicodeEncodeError in test-notify.t:422 when testing the notify hook with non-ascii content (there are more later). We only decode on Python 3, since it's not safe for sure on Python 2.