Variable: diary-icalendar-uid-regexp
diary-icalendar-uid-regexp is a customizable variable defined in
diary-icalendar.el.gz.
Value
"^[[:space:]]+UID:[[:space:]]*\\(?1:.+\\)"
Documentation
Regular expression to match UID of an entry.
The UID value should be matched by group 1. The default regexp matches UIDs on lines like:
UID: some-unique-identifier
This variable was added, or its default value changed, in Emacs 31.1.
Source Code
;; Defined in /usr/src/emacs/lisp/calendar/diary-icalendar.el.gz