The values of some attributes are replaced with the attribute name, which breaks MathML

[VelizarHristov]

Version

2.5.16

Reproduction link

https://gist.github.com/VelizarHristov/edaf4cf0d7b9f90c1e5d6070c027237f

Steps to reproduce

Open the HTML in a browser (Internet connection is required to fetch the libraries).

What is expected?

[] should be displayed

What is actually happening?

open] is displayed

---

It comes from this line of code:

vue/src/platforms/web/server/modules/attrs.js

Line 49 in aa1356e

return ` ${key}="${key}"`

The list of rewritten attributes is here:

vue/src/platforms/web/util/attrs.js

Line 22 in 7116af4

export const isBooleanAttr = makeMap(

This is a general problem when including a block of XML in the HTML.