Hello. For some strange org sructures completions are not highlighted.
This is a strange bug. To reproduce it you need get two files from attachment and run emacs -q -l test.el test.org. Also you may need add (require 'org-install) because I have it in /etc/... After starting emacs press C-c C-j b <TAB> <TAB> and you'll see that b/e/, b/ee/, b/eee/ are not highlighted to headline color (yellow). test.org may look strange, but it's part of big real file. I've changed letters to some garbage and this bug still reproduced. But I can't delete or insert letters or strings. I'm using org-mode 7.8.02-1 from debian sid. -- sergio.
* a * b ** 2ssss *** sssssssssssss eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeee eeeee eeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee *** sssssssssssssssssssssssssssss ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss sssss *** iiiiiiiiiiiiiii ssssssssssssssssssssssssssssssssssssss ssssssssssssssssssssssssssssssssssss ** e * c
(setq org-goto-interface 'outline-path-completion)