org-link-re-with-space2
org-link-re-with-space2 is a variable defined in `org.el
'.
Its value is "\\(doi\\|elisp\\|f\\(?:ile\\(?:\\+\\(?:\\(?:emac\\|sy\\)s\\)\\)?\\|tp\\)\\|https?\\|m\\(?:ailto\\|essage\\)\\|news\\|shell\\):\\([^] \n <> ][^ \n ]*[^] \n <> ]\\)>?"Documentation: Matches a link with spaces, optional angular brackets around it.