eol: improve help on whether EOLs are changed in working copy or repository

Improved help to make it more clear for users which changes are only
changes in the working copy and which changes that will go into the
repository (on the following commit). Futhermore a note on when the
rules will be applied to the working directory.

hgext/eol.py

@@ -11,18 +11,20 b' configuration file every time you run an'
 configuration files. It uses two sections, ``[patterns]`` and
 ``[repository]``.
 
-The ``[patterns]`` section specifies the line endings used in the
-working directory. The format is specified by a file pattern. The
-first match is used, so put more specific patterns first. The
-available line endings are ``LF``, ``CRLF``, and ``BIN``.
+The ``[patterns]`` section specifies how line endings should be
+converted between the working copy and the repository. The format is
+specified by a file pattern. The first match is used, so put more
+specific patterns first. The available line endings are ``LF``,
+``CRLF``, and ``BIN``.
 
 Files with the declared format of ``CRLF`` or ``LF`` are always
-checked out in that format and files declared to be binary (``BIN``)
-are left unchanged. Additionally, ``native`` is an alias for the
-platform's default line ending: ``LF`` on Unix (including Mac OS X)
-and ``CRLF`` on Windows. Note that ``BIN`` (do nothing to line
-endings) is Mercurial's default behaviour; it is only needed if you
-need to override a later, more general pattern.
+checked out and stored in the repository in that format and files
+declared to be binary (``BIN``) are left unchanged. Additionally,
+``native`` is an alias for checking out in the platform's default line
+ending: ``LF`` on Unix (including Mac OS X) and ``CRLF`` on
+Windows. Note that ``BIN`` (do nothing to line endings) is Mercurial's
+default behaviour; it is only needed if you need to override a later,
+more general pattern.
 
 The optional ``[repository]`` section specifies the line endings to
 use for files stored in the repository. It has a single setting,
@@ -46,6 +48,10 b' Example versioned ``.hgeol`` file::'
   [repository]
   native = LF
 
+.. note::
+   The rules will first apply when files are touched in the working
+   copy, e.g. by updating to null and back to tip to touch all files.
+
 The extension uses an optional ``[eol]`` section in your hgrc file
 (not the ``.hgeol`` file) for settings that control the overall
 behavior. There are two settings: