Conceal: superscript `\command` without curly braces isn't rendered as superscript

[rben01]

Description

When Conceal is enabled, writing stuff^\infty does not render the infinity as superscript. Instead it renders as ^∞

To Reproduce

Source: $$\sum_{n=1}^\infty\frac{1}{n^2}=\frac{\pi^2}{6}$$

Expected Behavior

Actual behavior

Additional info

Wrapping \infty in curly braces solves this problem. $$\sum_{n=1}^{\infty}\frac{1}{n^2}=\frac{\pi^2}{6}$$