A regex by itself won't be sufficient to fully parse text into Markdown, as Markdown has a variety of syntax rules that can't be captured by a single regular expression. However, I can provide you with a set of regex patterns to help identify some common Markdown elements. You can use these patterns to build a parser or converter:
-
Headers:
^(#{1,6})\s+(.+)$ -
Bold text:
\*\*(.+?)\*\*|__(.+?)__ -
Italic text:
\*(.+?)\*|_(.+?)_ -
Strikethrough:
~~(.+?)~~