Search for <=> (literally)

[SuperCowProducts]

From trying to do this I was pleased to discover we have some handy macros for fancy unicode math symbols, although I think if we're copying a string then it should stay as the literal result. Did I miss a way to search for this?

Also I tried searching for ⇔ inside https://github.com/typst/typst/releases/download/v0.15.1/typst-documentation.pdf, but I wasn't able to get any results - can anyone reproduce?

[ahrm]

Searching for the actual ⇔ symbol works, searching for <=> doesn't work (and why would it? The document doesn't contain that text).