This is most likely a problem with a plugin (caching options, using LRU, etc?), but I'm not good enough to really troubleshoot it. My complete dotfiles (not very extensive) can be found here
I use the following related plugins (and maybe others, but I'm not sure):
- flx-ido
- smex
- ido-ubiquitous
- ido-vertical-mode
What seems to be happening is the following:
- I press
C-x C-m(globally bound to'smex) - I type
ltwhich findsload-theme - I choose a theme
- Everything works
- I press
C-x C-m - I type
ruby - I see absolutely nothing in the list
- I type
C-gto get out of it - I type
C-x C-m - I type
ruby - I see a lot of ruby options
I should see a host of ruby-related things, including for instance ruby-mode.