Remove invalid regexp for shell builtins for wksh

* lisp/progmodes/sh-script.el (sh-builtins): Shell built-ins have to
be literal strings, so remove a regexp for wksh. In any case, it’s a
defunct proprietary shell.

diff --git a/lisp/progmodes/sh-script.el b/lisp/progmodes/sh-script.el
index 95fe3b082ba3af7285d1ea1f930efb91587dc768..54c47b719fb77646f7dec125ca2f3e22ccd39443 100644 (file)
--- a/lisp/progmodes/sh-script.el
+++ b/lisp/progmodes/sh-script.el
@@ -709,9 +709,7 @@ removed when closing the here document."
     ;; The next entry is only used for defining the others
     (shell "cd" "echo" "eval" "set" "shift" "umask" "unset" "wait")
 
-    (wksh sh-append ksh88
-          ;; wksh has X toolkit APIs as built-ins!
-         "Xt[A-Z][A-Za-z]*")
+    (wksh sh-append ksh88)
 
     (zsh sh-append ksh88
         "autoload" "bindkey" "builtin" "chdir" "compctl" "declare" "dirs"