The DOM1 Errata http://www.w3.org/DOM/updates/REC-DOM-Level-1-19981001-errata.html remove HTMLBlockquote element, since blockquotes are represented by HTMLQuoteElement. Right now, you represent them correctly. However, the IDL file, http://lxr.mozilla.org/seamonkey/source/dom/public/idl/html/HTMLBlockquoteElement.idl (and possibly other code) still exist. I think this file (and other files?) should probably be removed since they aren't (hopefully) being used. The main reason to bother, I think, is that IDL files serve as documentation for what DOM you support. It would also, I would think, slightly reduce the size of the binary in addition to the source tree.
I've deleted the IDL file and removed the generated source from the makefiles. Gerardo, this should be verified closed.
Verified that the IDL file doesn't exist in the tree as reported by lxr on 9/2/99. Why closed?