blink-matching-paren-distance
blink-matching-paren-distance is a variable defined in `simple.el
'.
Its value is 102400Documentation: If non-nil, maximum distance to search backwards for matching open-paren. If nil, search stops at the beginning of the accessible portion of the buffer. You can customize this variable. This variable was introduced, or its default value was changed, in version 23.2 of Emacs.