Incorrect "variable was not properly terminated with regexp" error

[andrew-3]

If I do:

Liquid::Template.parse("{{ '{}' }}")

I get Liquid::SyntaxError: Liquid syntax error: Variable '{{ '{}' was not properly terminated with regexp: /\}\}/ which is not correct.

Tested on version 5.1.0.

[andershagbard]

Duplicate/Related https://github.com/Shopify/liquid/issues/1491

[Oscilllator]

I also get an error with the string: $$f = \frac{1}{2\pi\sqrt{LC}} => L = \frac{1}{{C(2\pi f)}^2}$$ $$f = \frac{1}{2\pi\sqrt{LC}} => L = \frac{1}{{C(2\pi f)}^2}$$ Error: github-pages 227 | Error: Liquid syntax error (line 55): Variable '{{C(2\pi f)}' was not properly terminated with regexp: /}}/

[dylanahsmith]

Yup, this is a duplicate of https://github.com/Shopify/liquid/issues/1491