Regular expression to extract text between square brackets

You can use the following regex globally:

\[(.*?)\]

Explanation:

  • \[ : [ is a meta char and needs to be escaped if you want to match it literally.
  • (.*?) : match everything in a non-greedy way and capture it.
  • \] : ] is a meta char and needs to be escaped if you want to match it literally.

(?<=\[).+?(?=\])

Will capture content without brackets

  • (?<=\[) - positive lookbehind for [

  • .*? - non greedy match for the content

  • (?=\]) - positive lookahead for ]

EDIT: for nested brackets the below regex should work:

(\[(?:\[??[^\[]*?\]))