diff options
| -rw-r--r-- | lisp/progmodes/bug-reference.el | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lisp/progmodes/bug-reference.el b/lisp/progmodes/bug-reference.el index e502cbb3dc0..61d722f5b9d 100644 --- a/lisp/progmodes/bug-reference.el +++ b/lisp/progmodes/bug-reference.el @@ -25,10 +25,13 @@ ;; This file provides minor modes for putting clickable overlays on ;; references to bugs. A bug reference is text like "PR foo/29292"; -;; this is mapped to a URL using a user-supplied format. +;; this is mapped to a URL using a user-supplied format; see +;; `bug-reference-url-format' and `bug-reference-bug-regexp'. More +;; extensive documentation is in (info "(emacs) Bug Reference"). ;; Two minor modes are provided. One works on any text in the buffer; -;; the other operates only on comments and strings. +;; the other operates only on comments and strings. By default, the +;; URL link is followed by invoking C-c RET or mouse-2. ;;; Code: @@ -126,6 +129,9 @@ The second subexpression should match the bug reference (usually a number)." "Open URL corresponding to the bug reference at POS." (interactive (list (if (integerp last-command-event) (point) last-command-event))) + (when (null bug-reference-url-format) + (user-error + "You must customize some bug-reference variables; see Emacs info node Bug Reference")) (if (and (not (integerp pos)) (eventp pos)) ;; POS is a mouse event; switch to the proper window/buffer (let ((posn (event-start pos))) |