Parsing Code Fence Parameters causes TypeError

[V1ncNet]

Context

I'm using code fence parameters for my pandoc pipeline to render plantuml diagrams using pandoc's diagram filter. Unfortunately, the mandatory syntax ```{#fig:use-cases .plantuml caption="foo"} causes codimd to throw an error while parsing the parameters.

Workaround

Switch to Edit-Mode (by changing the URL's query param to ?edit) and remove the causing line.

Cause

codimd is capable of parsing the expression above, the function is called parseFenceCodeParams. There is a Not-Operator missing that causes the class property to never be initialized. The next line fails due to the uninitialized property.

codimd/public/js/lib/markdown/utils.js

Lines 12 to 13 in ded6b58

	if (params.class) params.class = []
	params.class = params.class.concat(param.slice(1))