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 #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 #1491

[TidbitSoftware]

I also get an error with the string: f = 1 2 π L C => L = 1 C ( 2 π f ) 2 $$f = \frac{1}{2\pi\sqrt{LC}} => L = \frac{1}{{C(2\pi f)}^2}$$

@Oscilllator I know this is old, but on the off chance you or someone else can benefit from this, I was able to resolve a similar issue (feeding a query to https://latex.codecogs.com/gif.latex) by making sure there's a space between consecutive opening braces,

{{C -> { {C

It likewise resolves,

Liquid Warning: Liquid syntax error (line <LINE_NUM>): Unexpected character \ in "{{[...]