Regex To Upper And Lower Case Link to heading

• Lower: \L
• Upper: \U

The example below matches two groups, and replaces them for

• The second group upper cased: \U\2
• Underscore: _
• The first group lower cased: \L\1

Match:

: id: (.*)-([a-z0-9]{4})

Replace

: id: \U\2_\L\1