checkdoc-this-string-validcheckdoc-this-string-valid is a compiled Lisp function in `
checkdoc.el'. (checkdoc-this-string-valid) Return a message string if the current doc string is invalid. Check for style only, such as the first line always being a complete sentence, whitespace restrictions, and making sure there are no hard-coded key-codes such as C-[char] or mouse-[number] in the comment. See the style guide in the Emacs Lisp manual for more details.