From 4908048098b34687688fa07743f8b9f08cb9bbee Mon Sep 17 00:00:00 2001
From: tomo <tomo>
Date: Sun, 14 Nov 1999 18:49:45 +0000
Subject: [PATCH] (byte-compile-insert-header): Delete comments if non-ASCII
 characters are found; allow `byte-compile-dynamic' and
 `byte-compile-dynamic-docstrings' if *.elc will be encoded
 by `raw-text'.

---
 lisp/bytecomp.el |   84 ++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 60 insertions(+), 24 deletions(-)

diff --git a/lisp/bytecomp.el b/lisp/bytecomp.el
index 68d0fb3..df74963 100644
--- a/lisp/bytecomp.el
+++ b/lisp/bytecomp.el
@@ -1751,33 +1751,69 @@ With argument, insert value in current buffer after the form."
   ;; Emacsen.
   (when (featurep 'mule)
     (defvar buffer-file-coding-system)
-    (if (save-excursion
-	  (set-buffer byte-compile-inbuffer)
+    (let (ces)
+      (save-excursion
+	(set-buffer byte-compile-inbuffer)
+	(goto-char (point-min))
+	;; mrb- There must be a better way than skip-chars-forward
+	(skip-chars-forward (concat (char-to-string 0) "-"
+				    (char-to-string 255)))
+	(if (eq (point) (point-max))
+	    (setq ces 'raw-text)
+	  (goto-char (point-min))
+	  (while (< (point)(point-max))
+	    (cond ((eq (char-after) ?\;)
+		   (delete-region (point)(point-at-eol))
+		   (if (eq (char-after) ?\n)
+		       (delete-char 1)
+		     (forward-char))
+		   )
+		  ((eq (char-after) ?\?)
+		   (forward-char 2)
+		   )
+		  ((eq (char-after) ?\n)
+		   (forward-char)
+		   )
+		  ((eq (char-after) ?\")
+		   (forward-char)
+		   (while (and (< (point)(point-max))
+			       (not (when (eq (char-after) ?\")
+				      (forward-char)
+				      t)))
+		     (if (eq (char-after) ?\\)
+			 (forward-char 2)
+		       (forward-char)))
+		   )
+		  (t
+		   (forward-char))))
 	  (goto-char (point-min))
-	  ;; mrb- There must be a better way than skip-chars-forward
 	  (skip-chars-forward (concat (char-to-string 0) "-"
 				      (char-to-string 255)))
-	  (and (eq (point) (point-max))
-	       (not
-		(re-search-backward
-		 "\\\\u[0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f]" nil t))))
-	(setq buffer-file-coding-system 'raw-text)
-      (cond ((featurep 'utf-2000)
-	     (insert "(require 'mule)\n;;;###coding system: utf-8\n")
-	     (setq buffer-file-coding-system 'utf-8)
-	     )
-	    (t
-	     (insert "(require 'mule)\n;;;###coding system: escape-quoted\n")
-	     (setq buffer-file-coding-system 'escape-quoted)
-	     ))
-      ;; #### Lazy loading not yet implemented for MULE files
-      ;; mrb - Fix this someday.
-      (save-excursion
-	(set-buffer byte-compile-inbuffer)
-	(setq byte-compile-dynamic nil
-	      byte-compile-dynamic-docstrings nil))
-      ;;(external-debugging-output (prin1-to-string (buffer-local-variables))))
-      ))
+	  (setq ces
+		(if (eq (point) (point-max))
+		    (if (and (featurep 'utf-2000)
+			     (re-search-backward "\\\\u[0-9A-Fa-f]+" nil t))
+			'utf-8-unix
+		      'raw-text)))))
+      (if (eq ces 'raw-text)
+	  (setq buffer-file-coding-system 'raw-text)
+	(cond ((eq ces 'utf-8-unix)
+	       (insert "(require 'mule)\n;;;###coding system: utf-8-unix\n")
+	       (setq buffer-file-coding-system 'utf-8-unix)
+	       )
+	      (t
+	       (insert "(require 'mule)\n;;;###coding system: escape-quoted\n")
+	       (setq buffer-file-coding-system 'escape-quoted)
+	       ))
+	;; #### Lazy loading not yet implemented for MULE files
+	;; mrb - Fix this someday.
+	(save-excursion
+	  (set-buffer byte-compile-inbuffer)
+	  (setq byte-compile-dynamic nil
+		byte-compile-dynamic-docstrings nil))
+        ;; (external-debugging-output
+        ;;  (prin1-to-string (buffer-local-variables)))
+	)))
   )
 
 
-- 
1.7.10.4