Alist for initializing the hideshow variables for different modes.
Each element has the form
(MODE START END COMMENT-START FORWARD-SEXP-FUNC ADJUST-BEG-FUNC).
If non-nil, hideshow will use these values as regexps to define blocks
and comments, respectively for major mode MODE.
START, END and COMMENT-START are regular expressions. A block is
defined as text surrounded by START and END.
As a special case, START may be a list of the form (COMPLEX-START
MDATA-SELECTOR), where COMPLEX-START is a regexp w/ multiple parts and
MDATA-SELECTOR an integer that specifies which sub-match is the proper
place to adjust point, before calling `hs-forward-sexp-func'. Point
is adjusted to the beginning of the specified match. For example,
see the `hs-special-modes-alist' entry for `bibtex-mode'.
For some major modes, `forward-sexp' does not work properly. In those
cases, FORWARD-SEXP-FUNC specifies another function to use instead.
See the documentation for `hs-adjust-block-beginning' to see what is the
use of ADJUST-BEG-FUNC.
If any of the elements is left nil or omitted, hideshow tries to guess
appropriate values. The regexps should not contain leading or trailing whitespace. Case does not matter.