Variable: org-target-link-regexp-limit
org-target-link-regexp-limit is a variable defined in ol.el.gz.
Value
8192
Documentation
Maximum allowed length of regexp.
The number should generally be ~order of magnitude smaller than MAX_BUF_SIZE in src/regex-emacs.c. The number of regexp-emacs.c is for processed regexp, which appears to be larger compared to the original string length.
Source Code
;; Defined in /usr/src/emacs/lisp/org/ol.el.gz
(defconst org-target-link-regexp-limit (ash 2 12)
"Maximum allowed length of regexp.
The number should generally be ~order of magnitude smaller than
MAX_BUF_SIZE in src/regex-emacs.c. The number of regexp-emacs.c is
for processed regexp, which appears to be larger compared to the
original string length.")