i18n: detect UI language without POSIX-style locale variable on Windows (BC)
On Windows, it isn't common to set LANG environment variable. This patch makes
gettext honor Windows-style UI language [1] if no locale variables are set.
Because of this change, LANG=C or HGPLAIN must be set in order to disable
translation on non-English Windows.
[1]: http://msdn.microsoft.com/en-us/library/dd374098(v=VS.85).aspx
When Mercurial accepts more than one revision, they may be specified
individually, or provided as a topologically continuous range,
separated by the ":" character.
The syntax of range notation is [BEGIN]:[END], where BEGIN and END are
revision identifiers. Both BEGIN and END are optional. If BEGIN is not
specified, it defaults to revision number 0. If END is not specified,
it defaults to the tip. The range ":" thus means "all revisions".
If BEGIN is greater than END, revisions are treated in reverse order.
A range acts as a closed interval. This means that a range of 3:5
gives 3, 4 and 5. Similarly, a range of 9:6 gives 9, 8, 7, and 6.