Steps: 1. Open Browser. 2. Open (Ctrl+2) MailNews. I tried to s/var/const/ the RDF definition, and got {{ Error: redeclaration of var RDF Source File: chrome://messenger/content/messengerdnd.js }} As a test, I moved <messengerdnd.js> to be first in the JS list in <mailWindow.js>, and got {{ Error: redeclaration of const RDF Source File: chrome://messenger/content/mailWindow.js Error: redeclaration of const RDF Source File: chrome://communicator/content/bookmarks/bookmarks.js }} These 3 files eventually define the "same" |var RDF| value. Even if it is working (fine) as it is, I just hit a case where this becomes an issue :-/ This seems to be the same kind of problem as bug 446027 (-> bug 446281)... What is the proper way to solve this (case) ? Rename the constant/variable(s) ? Share a common definition ? ...

[Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.0.2pre) Gecko/2008071502 SeaMonkey/2.0a1pre] (nightly) (W2Ksp4) This is with SM; [Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.0.2pre) Gecko/2008071303 Thunderbird/3.0a2pre] (nightly) (W2Ksp4) but TB has the same issue. (Without the bookmarks file, obviously.)

The messengednd.js file seems to only exist in Seamonkey. But there does not seem to be any declaration of RDF these days.