Fuse Web/XML, Web/XPath, Web/EXSLT, Web/XSLT under Web/XML

[teoli2003]

These 4 areas are all about XML manipulations; we should regroup them in one hierarchy and clean them a bit.

XPath is an expression language designed to support the query or transformation of XML documents.
XSLT is a language designed to transform XML documents into other XML documents or formats, such as HTML.
EXSLT is a set of extensions to XSLT.
XML is just a few guides…

Note: there is already an outdated navigation bar in some of these technologies on MDN to link between them:

Regrouping them will allow:

• to add page-type to these areas
• to create/unify a unique sidebar for all these technologies, following the modern structure
• clean the structure of this area (that is old and sometimes broken, but is not that bad wrt the content itself)

Any thought?

If we go forward, I will create an issue with the detailed envisioned structure.

[dontcallmedom]

I think re-grouping them under a single hierarchy makes sense (although I'm not sure doing is a pre-requisite to the listed improvements)

Overall, I think the content should make it clearer that this is about XSLT and XPath as supported in browsers (since both XSLT and XPath have in the meantime evolved way beyond the browser-supported scope).

Should Web/EXSLT be kept around at all? this seems to be specifically about Firefox-supported extensions to XSLT

[teoli2003]

To be honest, I have not dug into EXSLT.

Yes, we should make it clearer that this is about XSLT/XPath in browsers.

This will need some more study before we actually start the work.

[teoli2003]

I made an inventory: https://docs.google.com/spreadsheets/d/1nwJeXKpyg2lRaQ7dbvh1vnrcCqqxSsg6yTCOlqUwPxA/edit#gid=0

It looks like we should, in addition to the fusion, do:

• a few articles should be deleted: they are landing-page with no subpages or subpages not at the same place, or outdated data
• a few articles should be merged into one: they really are paragraphs of larger articles
• the hierarchy of xpath/axes should be moved to another place.

Of course, we should also: review the articles to make them browser-agnostic (eventually renaming them) and mark what is non-standard with a banner.

For page-types, we should create the following specific types:

• xslt-element
• xpath-function
• xpath-axe
• exslt-function (likely non-standard, so we'll see if it still works somewhere)

[OnkarRuikar]

• Please merge feature(tool/move): update files pointing to the moved document(s) yari#8493 before any major restructuring.

[teoli2003]

Yes! I moved a page this morning and had to fix 30 pages manually (ok, semi-manually) afterward. This PR is so important to keep our flaws at bay.

[Rumyra]

I really like this idea @teoli2003