outline-heading-end-regexp

outline-heading-end-regexp is a variable defined in `outline.el'.
Its value is

"
"

• This variable is safe as a file local variable if its value
  satisfies the predicate `stringp'.

Documentation:
Regular expression to match the end of a heading line.
You can assume that point is at the beginning of a heading when this
regexp is searched for. The heading ends at the end of the match.
The recommended way to set this is with a `Local Variables:' list
in the file it applies to.