If I were parsing HTML, I would have an exception list that contained the
few tags that don't have closing tags.  I wouldn't expect a closing tag for
those.  If I did get one, I'd ignore it.

There is a very small and fixed number of these exceptional tags.  Custom
tags should have closing tags.

--blake


On Tue, Feb 23, 2021 at 6:01 AM Dr. Jürgen Sauermann <
mail@jürgen-sauermann.de> wrote:

> Hi Blake,
>
> You're correct. Another problem in HTML is unquoted attribute values in
> HTML tags.
>
> I should have said "One can use ⎕XML for decoding HTML pages and the
> like as long as
> they obey the fundamental XML encoding rules".
>
> I believe it would be possible to make ⎕XML tolerate some of these HTML
> quirks,
> but I wonder if it is worth the effort.
>
> Best Regards,
> Jürgen
>
>
>
> On 2/22/21 10:11 PM, Blake McBride wrote:
> > Some of those "optional" end tags are not optional at all.  It's not
> > HTML if it's there.  For example:
> >
> > <br></br>    is not HTML.
> >
> > --blake
> >
> >
> >
> > On Mon, Feb 22, 2021 at 1:21 PM Dr. Jürgen Sauermann
> > <mail@jürgen-sauermann.de <mailto:mail@j%C3%BCrgen-sauermann.de>> wrote:
> >
> >     Hi,
> >
> >     as far as I understand it, HTML has almost the same format as XML
> >     (the main difference being optional end tags in
> >     HTML which are mandatory in XML. I would assume that ⎕XML can do
> >     the decoding of common web interfaces
> >     like the REST API or other XML based queries quite well. Fetching
> >     of the data can be done with ⎕FIO[32 ff.] so
> >     the combination of them should almost do the job.
> >
> >     Best Regards,
> >     Jürgen
> >
> >
> >     On 2/22/21 4:13 PM, Elias Mårtenson wrote:
> >>     This could be quite useful when collecting data from a web site.
> >>     For example, pull in a table of numbers from a Wikipedia page.
> >>     Google Docs has this feature already and it can be quite useful.
> >>
> >>     Regards,
> >>     Elias
> >>
> >>     On Mon, 22 Feb 2021 at 22:26, Chris Moller <mol...@mollerware.com
> >>     <mailto:mol...@mollerware.com>> wrote:
> >>
> >>         Sounds like another native function!  :-)
> >>
> >>         Maybe after I finish my current project...
> >>
> >>         On 2/22/21 5:26 AM, Hans-Peter Sorge wrote:
> >>>         Hi,
> >>>
> >>>         I would modify the data model and/or process graph or use an
> >>>         adequate programming language.
> >>>         In my opinion, having to rely on data content to control
> >>>         program flow is 'costly'.
> >>>         (My be one reason too, that APL has no language specific
> >>>         regular expressions).
> >>>
> >>>         My highest priority for APL would be the mapping between an
> >>>         apl name and a file,
> >>>         directory, a db-table, a spread sheet or an editor instance.
> >>>
> >>>         APL was designed to contain code and data in a 'closed'
> >>>         workspace.
> >>>         Those days data entry was done by human nature - into the
> >>>         work space.
> >>>         Nowadays I get the data very likely from somewhere outside
> >>>         of the workspace.
> >>>         ⍎ ')host' and piping are already a big help here.
> >>>
> >>>         But for example analyzing a web page, that is being done
> >>>         faster in python.
> >>>         Having a proper infrastructure in APL, like
> >>>         *page ← ⎕curl '...url...' **
> >>>         **page['head';'link' ] *
> >>>         could return all link tags. - just dreaming:-)
> >>>
> >>>         However - please no if/then/else
> >>>
> >>>         Best Regards
> >>>         Hans-Peter
> >>>
> >>>
> >>>         Am 20.02.21 um 19:59 schrieb Christian Robert:
> >>>>         well I saw the new thrends aka Quad-XML, Quad-JSON,
> >>>>         Quad-FFT and so on
> >>>>
> >>>>         but I think thoses will never be used in real life or quite
> >>>>         seldom.
> >>>>
> >>>>         I really think that Juergen should be looking at
> >>>>
> >>>>         :if/:elseif/:else/:endif
> >>>>
> >>>>         :for var :in array
> >>>>           loop
> >>>>         :endfor
> >>>>
> >>>>         :while condition:
> >>>>           loop
> >>>>         :endwhile
> >>>>
> >>>>         :do
> >>>>           loop
> >>>>         :until condition
> >>>>
> >>>>         this will eases newcommers to the language.
> >>>>
> >>>>         I know that APL goal is to do a whole "program" in one or
> >>>>         two lines of code...
> >>>>         but the language must accomodate newcommers.
> >>>>
> >>>>         I asked for that several years ago (may me 8 or 10 years)
> >>>>
> >>>>         Juergen ansewered at that time "this can be done" but I
> >>>>         wont yet
> >>>>
> >>>>         well my principal next improvements wish list is
> >>>>         if/for/while/do_until
> >>>>
> >>>>         my real though,
> >>>>
> >>>>         Xtian.
> >>>>
> >>>
> >>
> >
>
>

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