Description:

It seems that the KaTeX engine cannot handle some of the functions given in the KaTeX spec at https://khan.github.io/KaTeX/function-support.html.

In particular, we have tried using \operatorname and \implies, but they just give parsing errors.

Server Setup Information:

• Version of Rocket.Chat Server: 0.62.1
• Operating System: Linux Ubuntu
• Deployment Method(snap/docker/tar/etc): Snap
• Number of Running Instances: 1
• DB Replicaset Oplog: Not sure what this is
• Node Version: v8.9.4
• mongoDB Version: No Idea

Steps to Reproduce:

1. type \[ y \implies x\]
2. Send

Expected behavior:

No Parse error, instead give the Implies symbol

Actual behavior:

Parse Error:

KaTeX parse error: Expected 'EOF', got '\implies' at position 3: y \̲i̲m̲p̲l̲i̲e̲s̲ x

Relevant logs:

If this is an issue that is not already known, let me know and I will go through the effort of getting all the logs together.