Blogme3: support for "sandwiches"

The HTML files in angg are generated by Blogme3, and Blogme3 htmlizes elisp hyperlinks like this:

(find-maximanode "makelist")

It does that by splitting each sexp hyperlink into alternating layers of "bread" - the boring parts - and "fillings" - the interesting parts. For example, in the sexp above, the layers are:

(find-maximanode "makelist")
-                            :bread
 ---------------             :filling:1: help
                --           :bread
                  --------   :filling:2m: node
                          -- :bread

The code that handles sandwiches is mainly in these two files,

(find-blogme3 "sandwiches.lua")
(find-blogme3 "sandwiches-defs.lua")

and the best thing is that nowadays they are quite easy to debug. In my Emacs `M-h b' is bound to this function,

(find-angg ".emacs.templates" "find-sandwichsexp-links")

and if I type `M-h b' after the the sexp with `find-maximanode' above I get a temporary buffer with an eepitch block, and if I run that eepitch block I get the stuff at the right in the screenshot below: