casing

noun5

1. •
   That which encloses or encases.

   • Some people like to split the casing of a sausage before cooking so it doesn’t burst.
2. •
   The decorative trim around a door or window.
3. •
   A metal pipe used to line the borehole of a well.
4. •
   (Appalachia, old-fashioned) A tire.
5. •
   The state of letter case across a whole phrase or whole lines of text; the collective state/arrangement of uppercase and lowercase letters.

   • The replacement string should have the same casing as the matched text.