Function: math-match-substring
math-match-substring is a byte-compiled function defined in
calc.el.gz.
Signature
(math-match-substring S N)
Source Code
;; Defined in /usr/src/emacs/lisp/calc/calc.el.gz
(defun math-match-substring (s n)
(if (match-beginning n)
(substring s (match-beginning n) (match-end n))
""))