Don't tell to use \\{...} when it's already done.
;; to describe the most important commands in your major mode, and
;; then use `\\{...}' to display the rest of the mode's keymap.
(save-excursion
- (if (re-search-forward "\\\\\\\\\\[\\w+" e t
- (1+ checkdoc-max-keyref-before-warn))
+ (if (and (re-search-forward "\\\\\\\\\\[\\w+" e t
+ (1+ checkdoc-max-keyref-before-warn))
+ (not (re-search-forward "\\\\\\\\{\\w+}" e t)))
(checkdoc-create-error
"Too many occurrences of \\[function]. Use \\{keymap} instead"
s (marker-position e))))