[Standards] XEP-0372 references pointing to different elements in same stanza

Sergey Ilinykh rion4ik at gmail.com
Wed Sep 1 08:23:37 UTC 2021


I mean to use both *anchor* and *xml:lang* attributes to not write a
complicated element query parser if one is not provided by the used libs.

Best Regards,
Sergey


ср, 1 сент. 2021 г. в 11:10, JC Brand <lists at opkode.com>:

>
>
> On 01.09.21 10:06, Sergey Ilinykh wrote:
>
> why not just
>
> ```
>
> <reference xml:lang="en" .../>
> ```
> ?
>
>
> Because that doesn't distinguish between elements with different names.
> Is that reference based on the <body/> or <subject/> tag? Or perhaps a
> <text/> tag?
>
> - JC
>
> ср, 1 сент. 2021 г. в 10:59, JC Brand <lists at opkode.com>:
>
>> Hi Jonas
>>
>> On 31.08.21 17:23, Jonas Schäfer wrote:
>>
>> Hi JC,
>>
>> This has somehow slipped past me.
>>
>>
>> Thanks for taking the time to respond.
>>
>> On Freitag, 13. August 2021 14:00:06 CEST JC Brand wrote:
>>
>> So, if you have a stanza with for example, both "subject" and "body"
>> tags, we can have references for both, and use the "anchor" attribute as
>> follows (I hope this comes out formatted properly once sent):
>>
>> <message type="headline" from="school at springfield.city" <school at springfield.city>>
>>      <subject id="subject">Attention Bart Simpson</subject>
>>      <body id="body">Please hand in your homework before the end of the
>> day</body>
>>      <reference anchor="#subject" begin="9" end="21" type="mention"/>
>> </message>
>>
>> What about messages with multiple <body/> elements disambiguated by xml:lang?
>> Could some conceivably contain a mention while others don't? Does this require
>> replicating the mention element all over? Same question for <subject/>.
>>
>> This is another currently ambiguous and undefined use-case that I think
>> can be solved with my proposal.
>> As the XEP currently stands, there's no documented way to distinguish
>> between multiple <body/> (or <subject/>) elements.
>>
>> Going with my proposal, the solution would be to have a separate
>> <reference/> element for each <body/>.
>> The mention parameters ("begin", "end") will be different for each
>> <body/> since the mentioned text usually won't be in the exact same place
>> for the different translations.
>>
>> The "id" attribute can have any value, it doesn't have to be "body" or
>> "subject", those were just examples.
>>
>> Besides that, I don't think that adding an attribute to an element in this way
>> is really acceptable.
>>
>> I would prefer an approach which identifies the XML element without having to
>> modify the XML being referenced.
>>
>> The only mechanism that doesn't require modifying the referenced elements
>> that I can think of is XPath.
>>
>> My example then becomes:
>>
>> <message type="headline" from="school at springfield.city" <school at springfield.city>>
>>      <subject xml:lang="en">Attention Bart Simpson</subject>
>>      <subject xml:lang="af">Aandag Bart Simpson</subject>
>>      <body xml:lang="en">Please hand in your homework before the end of the day</body>
>>      <body xml:lang="af">Handig asseblief jou huiswerk in voor die einde van die dag</body>
>>      <reference anchor="/message/subject[@xml:lang='en']" begin="9" end="21" type="mention"/>
>>      <reference anchor="/message/subject[@xml:lang='af']" begin="6" end="18" type="mention"/>
>>  </message>
>>
>> Regards
>> JC
>>
>>
>> Libraries which currently represent body as a
>> (mappnig of language tags to) string(s) would now need extra magic in order to
>> be able to set ID attributes on those. This feels like a quite major change,
>> and not just to References, but to literally everything else.
>>
>> kind regards,
>> Jonas
>>
>>    [1]: https://www.w3.org/TR/REC-xml/#id
>>
>>
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