Convert GFM highlighted code block to Stack Overflow highlighted code block

Question

1. Question

I can't convert GFM highlighted code block to Stack Overflow highlighted code block.

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2. Example

For example, I need convert:

Do not change this line

```markdown
Sasha great!
    Sasha nice!
She is beautiful, surprise!
```

Do not change this line

to:

Do not change this line

<!-- language: lang-markdown -->

    Sasha great!
        Sasha nice!
    She is beautiful, surprise!

Do not change this line

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3. Problem

That get highlighted code block, I need to add tab in beginning of each line inside code block. I don't understand, how I can do it.

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4. Not helped

my example regex:

• Find:

  \`\`\`(.+?)\n((.+?\n)+)\`\`\`
  

• Replace:

  <!-- language: lang-\1 -->\n\n\t\2
  

Demonstration on Regex101.

I get result:

Do not change this line

<!-- language: lang-markdown -->

    Sasha great!
    Sasha nice!
She is beautiful, surprise!


Do not change this line

Tabulation symbol added in beginning only for first line inside code block. What can I do, that add tab symbol in beginning of each line inside code block?

Answer 1

Since you are using Sublime Text find / replace functionality and there is no programming language involved it would take you about two steps to achieve what you desire.

For first step try to search for:

(?m)(?:^```\h*\S+\s+\K|\G(?!\A))^(?!```)(.*\R+)(?:```)?

and replace with:

\t\1

Live demo

Second find / replace process would be for adding HTML comment so search for:

(?m)^```\h*(\S+)

and replace it with:

<!-- language: lang-\1 -->\n

Live demo