From: Anand Tamariya <atamariya@gmail.com>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: emacs-devel@gnu.org
Subject: Re: [Patch] Draw and scribble notes in GNU Emacs
Date: Mon, 13 Sep 2021 11:06:46 +0530 [thread overview]
Message-ID: <CADm7Y4mHBc9STf6JDiABnh4nbBGA=cbNABz=D+q0ZKzhmHcibQ@mail.gmail.com> (raw)
In-Reply-To: <87fsudu7jm.fsf@gnus.org>
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>
> > (defun svg--append (svg node)
> > + ;; id is expected to be unique.
> > (let ((old (and (dom-attr node 'id)
> > (dom-by-id svg
> > (concat "\\`" (regexp-quote (dom-attr node
> 'id))
> > "\\'")))))
> > (if old
> > - ;; FIXME: This was (dom-set-attributes old (dom-attributes
> node))
> > - ;; and got changed by commit
> f7ea7aa11f6211b5142bbcfc41c580d75485ca56
> > - ;; without any explanation.
> > - (setcdr (car old) (cdr node))
> > - (dom-append-child svg node)))
> > + ;; Remove old node. New node might be a different type.
> > + (mapc (lambda (a)
> > + (dom-remove-node svg a))
> > + old))
> > + (dom-append-child svg node))
>
> Hm... I think this is basically correct, but it's a behaviour change --
> previously svg--append wouldn't append if the ID already existed, but
> would keep the save place in the structure, but with this change, it
> really always appends.
>
> So I don't think that's quite right -- the old behaviour was OK, I think
> (but undocumented).
>
Existing code doesn't ensure ids are unique. Furthermore, in case id is
duplicated, only the attributes on the first tag gets replaced. That's a
little unpredictable behaviour from an API perspective.
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next prev parent reply other threads:[~2021-09-13 5:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-09 7:54 [Patch] Draw and scribble notes in GNU Emacs Anand Tamariya
2021-09-09 8:33 ` Po Lu
2021-09-09 12:00 ` Eli Zaretskii
2021-09-09 12:23 ` Po Lu
2021-09-09 14:51 ` Lars Ingebrigtsen
2021-09-10 21:45 ` dalanicolai
2021-09-13 5:32 ` Anand Tamariya
2021-09-13 5:15 ` Anand Tamariya
2021-09-09 14:50 ` Lars Ingebrigtsen
2021-09-13 5:36 ` Anand Tamariya [this message]
2021-09-13 8:25 ` Lars Ingebrigtsen
2021-09-13 8:31 ` Anand Tamariya
2021-09-13 8:47 ` Lars Ingebrigtsen
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