tracker issue : CF-3783403

Behavior has changed between ColdFusion 9/10 and ColdFusion 11 so that the expandPath() funcion returns an incorrect path to files using ColdFusion Mappings when used within Application.cfc or any component extended by Application.CFC.

Test case:

/
/foo
	foo.cfc
	/config
		config.xml
/wwwroot
	/cf11_mapping_bug
		Application.cfc
		test.cfm

Create a Mapping in the ColdFusion administrator for /foo, pointing to the /foo directory you just created.

Here are the files you'll need:		

<!--- foo.cfc --->
<cfcomponent output="true">
	<cfparam name="xmlConfigFile" default="#expandPath('/foo/config/config.xml')#" />		
	
	<cfoutput>	
	In foo.cfc <br />	
	#xmlConfigFile# <br />
	</cfoutput>
</cfcomponent>

<!--- Application.cfc --->
<cfcomponent extends="foo.foo" output="true">
	<cfset xmlConfigFile = expandPath('/foo/config/config.xml') />	
	
	<cfoutput>
	In Application.cfc <br />	
	#xmlConfigFile# <br />
	</cfoutput>
</cfcomponent>

<!--- test.cfm --->
<cfoutput>
In test.cfm <br />	
#expandPath('/foo/config/config.xml')# <br />
</cfoutput>

<!-- config.xml -->
<foo />

Executing the code on ColdFusion 9/10 results in the following output:

In foo.cfc 
/Users/rbils/Sites/localhost/foo/config/config.xml 
In Application.cfc 
/Users/rbils/Sites/localhost/foo/config/config.xml 
In test.cfm 
/Users/rbils/Sites/localhost/foo/config/config.xml 

Executing the same code in ColdFusion 11 results in the following:

In foo.cfc 
/Users/rbils/Sites/localhost/wwwroot/foo/config/config.xml 
In Application.cfc 
/Users/rbils/Sites/localhost/wwwroot/foo/config/config.xml 
In test.cfm 
/Users/rbils/Sites/localhost/foo/config/config.xml 

As you can see, expandPath when used in Application.cfc or a component extended by Application.cfc results in the mapped path being incorrectly returned.  We expect to see:

/Users/rbils/Sites/localhost/foo/config/config.xml 

But the bug is causing the mapping to be ignored and instead appended to the base path like so:

/Users/rbils/Sites/localhost/wwwroot/foo/config/config.xml 

In the real world, this is breaking all of our mach-ii apps, and requires code changes to work around the problem by providing absolute paths.

----------------------------- Additional Watson Details -----------------------------

Watson Bug ID:	3783403

External Customer Info:
External Company:  
External Customer Name: Rob Brooks-Bilson
External Customer Email:  
External Test Config: My Hardware and Environment details: Tested on ColdFusionn 9, 10, and 11 on Windows and OS X.

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