bug#15120: 24.3.50; (elisp) `Search-based Fontification': unspecified MATCHER cases

[Drew Adams <drew.adams@oracle.com>]

The doc string is good in this regard, but the Elisp manual is not.

The manual says that an element can be FUNCTION.  OK.

And it says, for (MATCHER . SUBEXP), that MATCHER can be a function.  OK.

But it does not say that for all of the other (MATCHER . *) patterns
MATCHER can also be a function.  In fact, for the others MATCHER is left
unspecified.

And for (MATCHER . SUBEXP-HIGHLIGHTER) the doc actually refers to a
"SUBEXP in MATCHER", which suggests, but does not specify, that MATCHER
in this case can be or perhaps even *must be* a REGEXP.

Follow the example of the doc string, or state somewhere that MATCHER,
in all that follows, can be either a regexp or a function...

IOW, make clear just what MATCHER can be, in general or in each of the
cases.



In GNU Emacs 24.3.50.1 (i686-pc-mingw32)
 of 2013-08-07 on ODIEONE
Bzr revision: 113750 lekktu@gmail.com-20130808011911-0jzpc9xuncegg6x9
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --prefix=/c/Devel/emacs/binary --enable-checking=yes,glyphs
 CFLAGS=-O0 -g3 LDFLAGS=-Lc:/Devel/emacs/lib
 CPPFLAGS=-Ic:/Devel/emacs/include'