GNU bug report logs - #29057
26.0.60; sgml-mode should define completion-at-point-functions

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Tom Tromey <tom <at> tromey.com>
Cc: 29057 <at> debbugs.gnu.org
Subject: bug#29057: 26.0.60; sgml-mode should define completion-at-point-functions
Date: Wed, 18 May 2022 00:07:34 +0200

Tom Tromey <tom <at> tromey.com> writes:

> sgml-mode has a lot of data about tags and attributes, but it doesn't
> provide a convenient way to do completion of them; only things like
> sgml-tag and sgml-attributes.
>
> I think sgml-mode should set completion-at-point-functions to a function
> that can complete attributes without querying the user in the minibuffer.

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

I think that's a good idea.  There's

(defvar html-tag-alist
[...]
    `(("a" ,name ,@link)
      ("area" t ,@shape ("coords") ("href") ("nohref" "nohref") ("alt")
       ("tabindex") ("accesskey") ("onfocus") ("onblur"))
      ("base" t ,@href)
      ("col" t ,@cellhalign ,@cellvalign ("span") ("width"))
      ("colgroup" \n ,@cellhalign ,@cellvalign ("span") ("width"))
      ("dir" ,@list)
      ("figcaption")

for instance, so it would make sense to offer completion or

<colg

to

<colgroup

and also offer completion of hitting TAB inside a tag to complete to
attributes (which are also in that alist).

But I wonder -- does this already exist?  It seems strange that nobody
has added something like this already.  Anybody know?  I can't see
anything in sgml-mode.el, but...

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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