From 0cf8a7c05cdd7638014feb264f50ac0be807aa15 Mon Sep 17 00:00:00 2001
From: morioka <morioka>
Date: Tue, 17 Feb 1998 13:01:10 +0000
Subject: [PATCH] (eword-decode-and-fold-structured-field): New function.
 (eword-decode-structured-field-body): Use it.
 (eword-decode-header): Likewise.

---
 eword-decode.el |   76 ++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 47 insertions(+), 29 deletions(-)

diff --git a/eword-decode.el b/eword-decode.el
index f984684..68d2b18 100644
--- a/eword-decode.el
+++ b/eword-decode.el
@@ -10,7 +10,7 @@
 ;;	Renamed: 1993/06/03 to tiny-mime.el
 ;;	Renamed: 1995/10/03 from tiny-mime.el (split off encoder)
 ;;	Renamed: 1997/02/22 from tm-ew-d.el
-;; Version: $Revision: 1.6 $
+;; Version: $Revision: 1.7 $
 ;; Keywords: encoded-word, MIME, multilingual, header, mail, news
 
 ;; This file is part of SEMI (SEMI is Emacs MIME Interfaces).
@@ -45,7 +45,7 @@
 ;;;
 
 (defconst eword-decode-RCS-ID
-  "$Id: eword-decode.el,v 1.6 1998-02-17 12:48:20 morioka Exp $")
+  "$Id: eword-decode.el,v 1.7 1998-02-17 13:01:10 morioka Exp $")
 (defconst eword-decode-version (get-version-string eword-decode-RCS-ID))
 
 
@@ -235,7 +235,7 @@ If SEPARATOR is not nil, it is used as header separator."
 		       (let ((body (buffer-substring p end))
 			     (default-mime-charset default-charset))
 			 (delete-region p end)
-			 (insert (eword-decode-structured-field-body
+			 (insert (eword-decode-and-fold-structured-field
 				  body (1+ len)))
 			 ))
 		      (t
@@ -464,6 +464,48 @@ characters encoded as encoded-words or invalid \"raw\" format.
 	   (concat "(" (std11-wrap-as-quoted-pairs value '(?( ?))) ")"))
 	  (t value))))
 
+(defun eword-decode-and-fold-structured-field
+  (string start-column &optional max-column must-unfold)
+  "Decode and fold (fill) STRING as structured field body.
+It decodes non us-ascii characters in FULL-NAME encoded as
+encoded-words or invalid \"raw\" string.  \"Raw\" non us-ascii
+characters are regarded as variable `default-mime-charset'.
+
+If an encoded-word is broken or your emacs implementation can not
+decode the charset included in it, it is not decoded.
+
+If MAX-COLUMN is omitted, `fill-column' is used.
+
+If MUST-UNFOLD is non-nil, it unfolds and eliminates line-breaks even
+if there are in decoded encoded-words (generated by bad manner MUA
+such as a version of Net$cape)."
+  (or max-column
+      (setq max-column fill-column))
+  (let ((c start-column)
+	(tokens (eword-lexical-analyze string must-unfold))
+	(result ""))
+    (while tokens
+      (let* ((token (car tokens))
+	     (type (car token)))
+	(setq tokens (cdr tokens))
+	(if (eq type 'spaces)
+	    (let* ((next-token (car tokens))
+		   (next-str (eword-decode-token next-token))
+		   (next-len (string-width next-str))
+		   (next-c (+ c next-len 1)))
+	      (if (< next-c max-column)
+		  (setq result (concat result " " next-str)
+			c next-c)
+		(setq result (concat result "\n " next-str)
+		      c (1+ next-len)))
+	      (setq tokens (cdr tokens))
+	      )
+	  (let* ((str (eword-decode-token token)))
+	    (setq result (concat result str)
+		  c (+ c (string-width str)))
+	    ))))
+    result))
+
 (defun eword-decode-structured-field-body (string &optional must-unfold
 						  start-column max-column)
   "Decode non us-ascii characters in STRING as structured field body.
@@ -481,32 +523,8 @@ if there are in decoded encoded-words (generated by bad manner MUA
 such as a version of Net$cape)."
   (if start-column
       ;; fold with max-column
-      (let ((c start-column)
-	    (tokens (eword-lexical-analyze string must-unfold))
-	    (result ""))
-	(or max-column
-	    (setq max-column fill-column))
-	(while tokens
-	  (let* ((token (car tokens))
-		 (type (car token)))
-	    (setq tokens (cdr tokens))
-	    (if (eq type 'spaces)
-		(let* ((next-token (car tokens))
-		       (next-str (eword-decode-token next-token))
-		       (next-len (string-width next-str))
-		       (next-c (+ c next-len 1)))
-		  (if (< next-c max-column)
-		      (setq result (concat result " " next-str)
-			    c next-c)
-		    (setq result (concat result "\n " next-str)
-			  c (1+ next-len)))
-		  (setq tokens (cdr tokens))
-		  )
-	      (let* ((str (eword-decode-token token)))
-		(setq result (concat result str)
-		      c (+ c (string-width str)))
-		))))
-	result)
+      (eword-decode-and-fold-structured-field
+       string start-column max-column must-unfold)
     ;; Don't fold
     (mapconcat (function eword-decode-token)
 	       (eword-lexical-analyze string must-unfold)
-- 
1.7.10.4