Math: implement m:groupChr group character converter (community)

[caio-pizzol]

What

Implement the m:groupChr (group character) OMML → MathML converter. Used for overbraces, underbraces, and other stretching characters.

OMML: m:groupChr → m:groupChrPr (chr, pos, vertJc) + m:e (content)
MathML: (bottom) or (top) with chr
Spec: §22.1.2.42
Difficulty: Medium

Details

• m:groupChrPr/m:chr@m:val — character (default U+23DF, bottom curly bracket)
• m:groupChrPr/m:pos@m:val — "bot" (default) or "top"

How to implement

1. Create converters/group-char.ts
2. Read chr and pos from m:groupChrPr
3. "bot" → <munder>, "top" → <mover>, with <mo>chr</mo>
4. Register as 'm:groupChr': convertGroupChar

Test Document

Download the test file and upload it to the SuperDoc dev app to verify your implementation renders correctly:

sd-2383-groupchar.docx

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Want to work on this? Check the Contributing Guide to get started. Comment on this issue to let us know you're picking it up.

Ref: SD-2383

[linear]

IT-824