> So I tried > > (add-hook 'org-export-preprocess-hook (function org-export-blocks-preprocess)) > > and I get the comment in the HTML output.
Is it valid a valid xhtml? M-x nxml-mode C-c C-n (assumming rng validation is on) I find that it suffers from the same problem that cropped up wrt special blocks. See this thread http://lists.gnu.org/archive/html/emacs-orgmode/2011-10/msg00046.html I think the comment blocks are better handled as special blocks instead of org-exp-blocks. ps: I think number of blocks and hooks in Org reflect number of people that worked on it :-) --