Current TeX delimiter results in messages involving dollar amounts being mangled

[bunlibnow]

Describe the bug

It is great to see Sable moving towards using marked and KaTeX rather than a bespoke Markdown parser, however I do not think the TeX-like dollar sign delimiter is fitting for a general purpose messaging app. Trying to send a message involving dollar amounts (probably more often hit than trying to send equations) results in mangling. Perhaps Sable could move to the LaTeX \(...\) syntax rather than the TeX-like $...$?

Reproduction

1. Type a message such as "I just bought something for $10 on sale, it was originally $20!"
2. Send and witness it be mangled by KaTeX

Expected behavior

The message would be left alone, and rendered normally by Sable.

Platform and versions

1. Linux
2. Firefox 140.10.1esr
3. 1.15.2

Additional context

No response

[7w1]

I wonder if just slightly smarter parsing would address the issue? Something like the opening $ must not have a space after and the closing must not have a space before and must not be immediately followed by a number.

My issue with the \(...\) and \[...\] syntax is that they use backslashes for some reason, which are escape characters. It feels very wrong to use escape characters as part of a deliminator imo.

The other alternatives I can see are maybe short codes like [math] [/math] but I can see that being very tedious to type for people who do make use of math a lot.