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py3: add "b" prefix to string literals related to module policy...
py3: add "b" prefix to string literals related to module policy String literals without explicit prefix in __init__.py and policy.py are treated as unicode object on Python3, because these modules are loaded before setup of our specific code transformation (the later module is imported at the beginning of __init__.py). BTW, "modulepolicy" in __init__.py is initialized by "policy.policy". This causes issues below; - checking "policy" value in other modules causes unintentional result For example, "b'py' not in (u'c', u'py')" returns True unintentionally on Python3. - writing "policy" out fails at conversion from unicode to bytes 62939e0148f1 fixed this issue for default code path, but "policy" can be overridden by HGMODULEPOLICY environment variable (it should be rare case for developer using Python3, though). This patch does: - add "b" prefix to all string literals, which are related to module policy, in modules above. - check existence of HGMODULEPOLICY, and overwrite "policy" only if it exists For simplicity, this patch omits checking "supports_bytes_environ", switching os.environ/os.environb, and so on (Yuya agreed this in personal talking)
Augie Fackler - - Load All Authors

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pager.txt
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Some Mercurial commands produce a lot of output, and Mercurial will
attempt to use a pager to make those commands more pleasant.
To set the pager that should be used, set the application variable::
[pager]
pager = less -FRX
If no pager is set, the pager extensions uses the environment variable
$PAGER. If neither pager.pager, nor $PAGER is set, a default pager
will be used, typically `more`.
You can disable the pager for certain commands by adding them to the
pager.ignore list::
[pager]
ignore = version, help, update
To ignore global commands like :hg:`version` or :hg:`help`, you have
to specify them in your user configuration file.
To control whether the pager is used at all for an individual command,
you can use --pager=<value>::
- use as needed: `auto`.
- require the pager: `yes` or `on`.
- suppress the pager: `no` or `off` (any unrecognized value
will also work).
To globally turn off all attempts to use a pager, set::
[pager]
enable = false
which will prevent the pager from running.