* lisp-mode.el: Fix missing highlight of "hidden" string arg

* lisp/emacs-lisp/lisp-mode.el (lisp-el-font-lock-keywords-2)
(lisp-cl-font-lock-keywords-2): Highlight "hidden arg" even if it
already has another face.

1 files changed, 4 insertions, 2 deletions

diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 352210f859d..268992295bf 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -478,7 +478,8 @@ This will generate compile-time constants from BINDINGS."
            (3 'font-lock-regexp-grouping-construct prepend))
          (lisp--match-hidden-arg
           (0 '(face font-lock-warning-face
-                    help-echo "Hidden behind deeper element; move to another line?")))
+               help-echo "Hidden behind deeper element; move to another line?")
+             prepend))
          (lisp--match-confusable-symbol-character
           0 '(face font-lock-warning-face
                     help-echo "Confusable character"))
@@ -522,7 +523,8 @@ This will generate compile-time constants from BINDINGS."
            (1 font-lock-keyword-face))
          (lisp--match-hidden-arg
           (0 '(face font-lock-warning-face
-               help-echo "Hidden behind deeper element; move to another line?")))
+               help-echo "Hidden behind deeper element; move to another line?")
+             prepend))
          ))
       "Gaudy level highlighting for Lisp modes.")))