Use case or problem
When clicking CMD-K to insert a new link ([]()), the cursor starts within the [] brackets to enter the name of the link. Hitting <tab> from here should put the cursor into the () brackets, and hitting shift-tab should move it back to [] (maybe with selecting the content within those brackets.
Hitting tab again should then place the cursor after the link, so after the closing ) bracket.
Currently hitting tab within [] will just insert a tab, and to go to the next field I have to use the arrow keys
Related feature requests (optional)
This is the normal behavior in most snippet managers, editors and IDEs