Completion Broken When Encountering xs:any

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Reminiscent of #177, it appears that on versions 0.26.1 (stable) and 0.26.2023080404 (pre-release), schema-based completion is broken when an xs:any element is encountered. Instead of showing explicitly-defined elements, it only shows the root tag as an option.

Summary

For a visual demonstration and a reproduction case, skip this header and continue to the detail/summary blocks.

When an xs:any schema element is present, the following is true:

The following features are working:

Validation
Documentation On Hover
Attribute Suggestion

The following feature is NOT working:

Tag Suggestion

Demo & Minimal Reproduction XSD

<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:element name="root">
        <xs:annotation><xs:documentation>Some documentation for the ROOT ELEMENT</xs:documentation></xs:annotation>
        <xs:complexType>
            <xs:sequence>
                <xs:any minOccurs="0" processContents="skip" />
                <xs:element name="Name" minOccurs="0" maxOccurs="1" type="xs:string">
                    <xs:annotation><xs:documentation>Some documentation for the NAME ELEMENT</xs:documentation></xs:annotation>
                </xs:element>
                <xs:element name="Id" minOccurs="0" maxOccurs="1">
                    <xs:annotation><xs:documentation>Some documentation for the ID ELEMENT</xs:documentation></xs:annotation>
                    <xs:complexType>
                        <xs:simpleContent>
                            <xs:extension base="xs:integer">
                                <xs:attribute name="type" type="xs:string" />
                            </xs:extension>
                        </xs:simpleContent>
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>

Scope of Issue (w/ Images) Using Above XSD

Documentation works on root eement

IntelliSense only shows root element for completion

Created element uses type for root element

Explicitly-defined elements still have their types applied

Validation is working

🔴🎩

Start with the minimal reproduction XSD in this issue and trace schema-based tag completion when the xs:any element is encountered. Reproduce the case in VS Code, then verify that explicitly defined Name and Id elements are suggested while validation and the other working features remain unaffected.

Written by the indexing model from the issue text.

Description

Summary

The following features are working:

The following feature is NOT working:

Demo & Minimal Reproduction XSD

Scope of Issue (w/ Images) Using Above XSD

Documentation works on root eement

IntelliSense only shows root element for completion

Created element uses type for root element

Explicitly-defined elements still have their types applied

Validation is working

Contributor guide

First steps

Research direction

Assessment

Completion Broken When Encountering xs:any

Description

Summary

The following features are working:

The following feature is NOT working:

Demo & Minimal Reproduction XSD

Scope of Issue (w/ Images) Using Above XSD

Documentation works on root eement

IntelliSense only shows root element for completion

Created element uses type for root element

Explicitly-defined elements still have their types applied

Validation is working

Contributor guide

First steps

Research direction

Assessment

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