Avoid byte-compiler warning in todo-mode (bug#21953)

* todo-mode.el (todo-convert-legacy-files): Add limit argument
to looking-back to comply with advertised-calling-convention.

diff --git a/lisp/calendar/todo-mode.el b/lisp/calendar/todo-mode.el
index ebf0a82be0c7bcb4b6e2a003b09c752b0e0af941..29d8dfcfb7f88df150f7a0080e934a35e89c337d 100644 (file)
--- a/lisp/calendar/todo-mode.el
+++ b/lisp/calendar/todo-mode.el
@@ -4654,13 +4654,15 @@ name in `todo-directory'.  See also the documentation string of
                    (goto-char (match-beginning 0))
                  (goto-char (point-max)))
                (backward-char)
-               (when (looking-back "\\[\\([^][]+\\)\\]")
+               (when (looking-back "\\[\\([^][]+\\)\\]"
+                                    (line-beginning-position))
                  (setq cat (match-string 1))
                  (goto-char (match-beginning 0))
                  (replace-match ""))
                ;; If the item ends with a non-comment parenthesis not
                ;; followed by a period, we lose (but we inherit that
                ;; problem from the legacy code).
+                ;; FIXME: fails on multiline comment
                (when (looking-back "(\\(.*\\)) " (line-beginning-position))
                  (setq comment (match-string 1))
                  (replace-match "")