Don't add snippet if the link was in a quote

[orklah]

When a user quote a previous reply that contains a psalm.dev link, the bot will reply with links already posted. This should be a matter of checking if there's no ">" character on the beggining of the line

[weirdan]

Markdown blockquotes are a bit more complex

> Blockquote
line
can
be
   continued

   > up to three spaces are allowed before `>`

    > and four spaces make it a code block

The above is rendered as:

Blockquote
line
can
be
continued

up to three spaces are allowed before >

> and four spaces make it a code block

So using a proper parser (e.g. commonmark.js) might be a better bet.

[orklah]

I had no idea this was this complex.

Not sure if it's a good idea anymore :D

[weirdan]

Another interesting case is footnote-style links, where the link reference might be in a quote, but the link URL is technically outside:

> Footnote [link][1]

[1]: https://example.org "Example Org"

Rendered as

Footnote link