The underline char has to be escaped when the char before it is not alpha or number. - Githubissues

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The underline char has to be escaped when the char before it is not alpha or number. #94

Open yangby-cryptape opened 7 months ago

yangby-cryptape commented 7 months ago

Description

The following code[^1] doesn't work:
```
Computable function $+_{E}$ such that: $c_{1} +_{E} c_{2} = E_{pk}(a + b)$.
```
I checked this piece of code in MathJax live demo, it works well.

Preview with GitHub-flavored Markdown:
- Computable function $+{E}$ such that: $c{1} +{E} c{2} = E_{pk}(a + b)$.
But it works well with escape characters:
```
Computable function $+\_{E}$ such that: $c_{1} +\_{E} c_{2} = E_{pk}(a + b)$.
```
Preview with GitHub-flavored Markdown:
- Computable function $+_{E}$ such that: $c{1} +_{E} c{2} = E_{pk}(a + b)$.

I found the issue exists in GitHub-flavored Markdown, too.

Maybe I should post this issue to the related dependency library, but I don't have enough Ruby experiences to find that library.

[^1]: This computable function is copied from the paper "Fast Multiparty Threshold ECDSA with Fast Trustless Setup".