Use `eval' in mail-font-lock-keywords.

diff --git a/lisp/mail/sendmail.el b/lisp/mail/sendmail.el
index 237b46294df2a80aceae47243bc727f77efb8673..fc14657c39b069921a6903f1a13541cd3b0d43c8 100644 (file)
--- a/lisp/mail/sendmail.el
+++ b/lisp/mail/sendmail.el
@@ -209,19 +209,20 @@ actually occur.")
      (modify-syntax-entry ?% ". " mail-mode-syntax-table)))
 
 (defvar mail-font-lock-keywords
-  (let* ((cite-prefix "A-Za-z") (cite-suffix (concat cite-prefix "0-9_.@-")))
-    (list '("^To:" . font-lock-function-name-face)
-         '("^B?CC:\\|^Reply-To:" . font-lock-keyword-face)
-         '("^\\(Subject:\\)[ \t]*\\(.+\\)?"
-           (1 font-lock-comment-face) (2 font-lock-type-face nil t))
-         (list (concat "^\\(" (regexp-quote mail-header-separator) "\\)$")
-               1 'font-lock-comment-face)
-         (cons (concat "^[ \t]*"
-                       "\\([" cite-prefix "]+[" cite-suffix "]*\\)?"
-                       "[>|}].*")
-               'font-lock-reference-face)
-         '("^\\(X-[A-Za-z0-9-]+\\|In-reply-to\\):.*"
-           . font-lock-string-face)))
+  (eval-when-compile
+    (let* ((cite-prefix "A-Za-z") (cite-suffix (concat cite-prefix "0-9_.@-")))
+      (list '("^To:" . font-lock-function-name-face)
+           '("^B?CC:\\|^Reply-to:" . font-lock-keyword-face)
+           '("^\\(Subject:\\)[ \t]*\\(.+\\)?"
+             (1 font-lock-comment-face) (2 font-lock-type-face nil t))
+           '(eval cons (concat "^" (regexp-quote mail-header-separator) "$")
+                  'font-lock-comment-face)
+           (cons (concat "^[ \t]*"
+                         "\\([" cite-prefix "]+[" cite-suffix "]*\\)?"
+                         "[>|}].*")
+                 'font-lock-reference-face)
+           '("^\\(X-[A-Za-z0-9-]+\\|In-reply-to\\):.*"
+             . font-lock-string-face))))
   "Additional expressions to highlight in Mail mode.")
 
 (defvar mail-send-hook nil