bug#13189: using glyphs by default in perl-mode

[Jambunathan K]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Ted Zlatanov <tzz@lifelogs.com>
>> Date: Wed, 05 Jun 2013 10:45:26 -0400
>> 
>> (Aside: I attempted to use `compose-region' to build more complicated
>> compositions besides a single character.  The docstring says the
>> COMPONENTS format can be several things, including:
>> 
>> "If it is a vector or list, it is a sequence of alternate characters and
>> composition rules, where (2N)th elements are characters and (2N+1)th
>> elements are composition rules to specify how to compose (2N+2)th
>> elements with previously composed N glyphs."
>> 
>> I stared at this for a while then I gave up.  It really needs one or two
>> examples and an alternate wording, because I have no idea what it says.)
>
> There's a reference to reference-point-alist, which I think has those
> details.
>
> As for examples, you can see them in tv-util.el, for example.

FWIW, created a cross link to 13189@debbugs.gnu.org.