[O] Bug: cdlatex-tab in math-env isn't considered when inside of a list item. [7.7 (release_7.7.513.g2a5877)]

[Maik Beckmann]

* The observed behavior
Inside a list item cdlatex-tab isn't considered.  An example:

  To circumvent emacs' fill-paragrah issue with \[ \] I prefer using a
  inline math environment in a single item list.  Unfortunately cdlatex
  isn't considered when hitting TAB then
   - $y = a_0 + a_{1[TAB]}$ .
  Emacs echos "EMPTY ENTRY" instead.  The same line without the leading
  list item qualifier works fine.  This line
     $y = a_0 + a_{1[TAB]}$
  results in
     $y = a_0 + a_1$ .


* The reason
In org.el in org-cycle a `cond' statement dispatches is done when
TAB is pressed.  The call to `org-try-cdlatex-tab' is part of
this dispatch.  Before `cond' reaches this entry it reaches the
one which determines whether or not the current context is a list
item.  Since this is true here, `cond' is satified and never
considers `org-try-cdlatex-tab'.  The entry calls
`org-cycle-internal-local' which then emits the "EMPTY ENTRY"
message.


* What I expected
Lets considering the case that there is a sub-item.
 - $y = a_0 + a_{1}$
  + foo
I expect cdlatex-tab to be tried first.  If it's nothing cdlatex
can reason about, expand/collapse the list.  For
 - $y = a_0 + a_{1[TAB]}$
  + foo
turns into
 - $y = a_0 + a_1$
  + foo
Another TAB
 - $y = a_0 + a_1[TAB]$
  + foo
turns it into
 - $y = a_0 + a_1$...


* Org mode version info
Emacs  : GNU Emacs 24.0.91.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.7)
 of 2011-11-04 on myhost
Package: Org-mode version 7.7 (release_7.7.513.g2a5877)