I'd like to extend the syntax of Markdown with a simple pre-processing option.
When the text contains some words in squared brackets, but no parenthesis follows it:
Example text with [some reference] to show.
I'd like to extend it so that it becomes a self-referencing link:
Example text with [some reference](some-reference.html) to show.
Creating the result itself is something I can do on my own, but I have no idea, how can I match exactly only these expressions:
A word [and more] in the text. // this matches
A word [and more](stackoverflow.com) in the text. // this doesn't