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+<!--
+Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 The SCons Foundation
+
+This file is processed by the bin/SConsDoc.py module.
+See its __doc__ string for a discussion of the format.
+-->
+
+<scons_function name="FindPathDirs">
+<arguments signature="global">
+(variable)
+</arguments>
+<summary>
+Returns a function
+(actually a callable Python object)
+intended to be used as the
+<varname>path_function</varname>
+of a Scanner object.
+The returned object will look up the specified
+<varname>variable</varname>
+in a construction environment
+and treat the construction variable's value as a list of
+directory paths that should be searched
+(like
+&cv-link-CPPPATH;,
+&cv-link-LIBPATH;,
+etc.).
+
+Note that use of
+&f-FindPathDirs;
+is generally preferable to
+writing your own
+<varname>path_function</varname>
+for the following reasons:
+1) The returned list will contain all appropriate directories
+found in source trees
+(when
+&f-link-VariantDir;
+is used)
+or in code repositories
+(when
+&f-Repository;
+or the
+<option>-Y</option>
+option are used).
+2) scons will identify expansions of
+<varname>variable</varname>
+that evaluate to the same list of directories as,
+in fact, the same list,
+and avoid re-scanning the directories for files,
+when possible.
+
+Example:
+
+<example>
+def my_scan(node, env, path, arg):
+    # Code to scan file contents goes here...
+    return include_files
+
+scanner = Scanner(name = 'myscanner',
+                  function = my_scan,
+                  path_function = FindPathDirs('MYPATH'))
+</example>
+</summary>
+</scons_function>