bug#21434: BUG Report: "mark-sexp" function disable.

[Mosè Giordano]

Hi!

2015-09-08 7:23 GMT+02:00 赵瑞昌 <address@hidden>:
> Dear Developer,
>
> When enter a `*.tex' file and initiate auctex(11.86), the function 
> `mark-sexp'(and also `forward/backward-sexp) is disabled.
> The correspond key-bindings (C-M-@ or ESC <C-left/right>) also get no 
> responses (which are well previously).

I can't reproduce your bug, at least not with AUCTeX 11.88, C-M-@ and
C-M-left/right do work for me.  Are you sure there is nothing in your
init file disabling this feature?  Try opening Emacs with

    emacs -q

in order not to load your init file.

Bye,
Mosè