sparse: move config parsing into core
This patch marks the beginning of moving code from the sparse
extension into core. The goal is to move as much of the
functionality as possible into core, where it will be an
experimental feature. The extension will likely continue to
exist to enable the feature and provide UI elements.
As part of the move, the repo method was converted to a module
function. It doesn't need to exist on repos.
An error message was also updated to reflect that an error isn't
necessarily from the .hg/sparse file. The API should be updated
later to pass in a filename so the error can be more descriptive.
Copyright of the added file was copied from the sparse extension.
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<h1>Mercurial for Windows</h1>
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<p>
Mercurial is a command-line application. You must run it from
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The easiest way to check that Mercurial is installed properly is
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hg
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<p>
This command should print a useful help message. If it does,
other Mercurial commands should work fine for you.
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<h1>Configuration notes</h1>
<h4>Default editor</h4>
<p>
The default editor for commit messages is 'notepad'. You can set
the <tt>EDITOR</tt> (or <tt>HGEDITOR</tt>) environment variable
to specify your preference or set it in <tt>mercurial.ini</tt>:
</p>
<pre>
[ui]
editor = whatever
</pre>
<h4>Configuring a Merge program</h4>
<p>
It should be emphasized that Mercurial by itself doesn't attempt
to do a Merge at the file level, neither does it make any
attempt to Resolve the conflicts.
</p>
<p>
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Answered Questions</a> (the "FAQ").
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<b>Remember</b>, the more useful information you include in your
report, the easier it will be for us to help you!
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<p>
If you are IRC-savvy, that's usually the fastest way to get
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<h1>Author and copyright information</h1>
<p>
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<p>
The Windows installer was written by <a
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Mercurial is Copyright 2005-2017 Matt Mackall and others. See
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