dedent in Snippet Markdown Plugin doesn't work for a single-line region

[0x009922]

Describe the bug

I have the following snippet:

fn main() {
    // #region ipsum
    println!("Lorem ipsum");
    // #endregion ipsum
}

I am importing it with the syntax:

<<<@/snippets/lorem.rs#ipsum

The rendered result:

    println!("Lorem ipsum");

Reproduction

https://stackblitz.com/edit/vite-skqr7n

Expected behavior

Expected to see:

println!("Lorem ipsum");

and not

    println!("Lorem ipsum");

System Info

N/A

Additional context

I've almost created a PR with fix & tests.

Validations

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• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.