Send multipart/alternative messages using mail.

The new option --alternative is provided to change the content type of
the composed message to multipart/alternative.  The ~/ escape toggles
the type between multipart/mixed and multipart/alternative.  In messages
of multipart/alternative type, the Content-Disposition header of all
attachments is reset to "inline".

* libmailutils/mime/mime.c (mu_mime_create): Bugfix: honour the
MU_MIME_MULTIPART_ALT flag.
* mail/mail.c: New option --alternative.
* mail/mail.h (compose_env) <attlist,mime>: New members.
(multipart_alternative): New global.
(send_attach_file): Change return value.
(escape_toggle_multipart_type): New proto.
* mail/send.c (multipart_alternative): New global.
Keep the list of attachments in compose_env_t.  Make sure it is freed
when no longer used.
Implement the ~/ escape.
* mail/table.c: New escape ~/
* mail/util.c: Use mu_strerror instead of strerror.

* NEWS: Document changes to the mail utility
* doc/texinfo/programs.texi: Likewise.

-GNU mailutils NEWS -- history of user-visible changes. 2017-04-09
+GNU mailutils NEWS -- history of user-visible changes. 2017-04-13
 Copyright (C) 2002-2017 Free Software Foundation, Inc.
 Copyright (C) 2002-2017 Free Software Foundation, Inc.
 See the end of file for copying conditions.
 See the end of file for copying conditions.
 
 
@@ -88,6 +88,21 @@ defined.  Instead, the following constants are defined in config.h:
 
 
 * movemail: new option --progress-meter
 * movemail: new option --progress-meter
 
 
+* mail: sending multipart messages
+
+** New option --alternative
+
+When used with --attach or --attach-fd options, this option sets the
+Content-Type of the constructed message to "multipart/alternative".
+In the absense of this option, the type is "multipart/mixed".
+
+** New escape ~/
+
+New escape ~/ toggles the Content-Type of the message being composed
+between "multipart/mixed" and "multipart/alternative".
+
+The actual Content-Type is displayed by the ~l (list attachments) escape.
+
 * scheme implementation of the Sieve language discontinued
 * scheme implementation of the Sieve language discontinued
 
 
 There's no reason to keep two different implementations of the Sieve
 There's no reason to keep two different implementations of the Sieve

@@ -3420,12 +3420,19 @@ To list the files attached so far, use the @samp{~l} escape:
 
 
 @example
 @example
 ~l
 ~l
+multipart/mixed
    1 myfile.html text/html base64
    1 myfile.html text/html base64
 @end example
 @end example
 
 
-Each line of the listing contains the ordinal number of the attachment,
+The first line of the output shows the content type of the message.
+Each subsequent line contains the ordinal number of the attachment,
 the name of the file, content-type and transfer encoding used.
 the name of the file, content-type and transfer encoding used.
 
 
+@cindex ~/, mail escape
+The @samp{~/} escape toggles the content type bewteen
+@samp{multipart/mixed}, and @samp{multipart/alternative}.  The new
+value of the content type is displayed on the screen.
+
 @cindex ~^, mail escape
 @cindex ~^, mail escape
 The @samp{~^} escape removes attachments.  Its argument is the number
 The @samp{~^} escape removes attachments.  Its argument is the number
 of the attachment to remove, e.g.:
 of the attachment to remove, e.g.:
@@ -3568,6 +3575,12 @@ either or both of them using the @option{--content-name} and
 affect only the next @option{--attach} (or @option{--attach-fd}, see
 affect only the next @option{--attach} (or @option{--attach-fd}, see
 below) option.
 below) option.
 
 
+By default, the message will be assigned the content type
+@samp{multipart/mixed}.  To change it to @samp{multipart/alternative},
+use the @option{--alternative} command line option.  Using this option
+also sets the @samp{Content-Disposition} header of each attached
+message to @samp{inline}.
+
 All the examples above will enter the usual interactive shell,
 All the examples above will enter the usual interactive shell,
 allowing you to compose the body of the message.  If that's not
 allowing you to compose the body of the message.  If that's not
 needed, the non-interactive use can be forced by redirecting
 needed, the non-interactive use can be forced by redirecting

@@ -879,6 +879,9 @@ _mime_body_lines (mu_body_t body, size_t *plines)
   return 0;
   return 0;
 }
 }
 
 
+#define MIME_MULTIPART_FLAGS \
+  (MU_MIME_MULTIPART_MIXED|MU_MIME_MULTIPART_ALT)
+
 int
 int
 mu_mime_create (mu_mime_t *pmime, mu_message_t msg, int flags)
 mu_mime_create (mu_mime_t *pmime, mu_message_t msg, int flags)
 {
 {
@@ -889,6 +892,16 @@ mu_mime_create (mu_mime_t *pmime, mu_message_t msg, int flags)
   
   
   if (pmime == NULL)
   if (pmime == NULL)
     return EINVAL;
     return EINVAL;
+  
+  switch (flags & MIME_MULTIPART_FLAGS)
+    {
+    case MIME_MULTIPART_FLAGS:
+      return EINVAL;
+
+    case 0:
+      flags |= MU_MIME_MULTIPART_MIXED;
+    }
+  
   *pmime = NULL;
   *pmime = NULL;
   if ((mime = calloc (1, sizeof (*mime))) == NULL)
   if ((mime = calloc (1, sizeof (*mime))) == NULL)
     return ENOMEM;
     return ENOMEM;
@@ -931,7 +944,7 @@ mu_mime_create (mu_mime_t *pmime, mu_message_t msg, int flags)
     }
     }
   else
   else
     {
     {
-      mime->flags |= MIME_NEW_MESSAGE | MU_MIME_MULTIPART_MIXED;
+      mime->flags |= MIME_NEW_MESSAGE;
     }
     }
   if (ret != 0)
   if (ret != 0)
     {
     {

@@ -146,9 +146,8 @@ cli_attach (struct mu_parseopt *po, struct mu_option *opt, char const *arg)
       arg = NULL;
       arg = NULL;
       fd = 0;
       fd = 0;
     }
     }
-  if (send_attach_file (fd, arg, content_filename, content_name,
-			default_content_type, default_encoding))
-    exit (1);
+  send_attach_file (fd, arg, content_filename, content_name,
+		    default_content_type, default_encoding);
 
 
   free (content_name);
   free (content_name);
   content_name = NULL;
   content_name = NULL;
@@ -169,9 +168,8 @@ cli_attach_fd (struct mu_parseopt *po, struct mu_option *opt, char const *arg)
       exit (po->po_exit_error);
       exit (po->po_exit_error);
     }
     }
   
   
-  if (send_attach_file (fd, NULL, content_filename, content_name,
-			default_content_type, default_encoding))
-    exit (1);
+  send_attach_file (fd, NULL, content_filename, content_name,
+		    default_content_type, default_encoding);
 
 
   free (content_name);
   free (content_name);
   content_name = NULL;
   content_name = NULL;
@@ -240,6 +238,10 @@ static struct mu_option mail_options[] = {
     N_("append given header to the message being sent"),
     N_("append given header to the message being sent"),
     mu_c_string, NULL, cli_append },
     mu_c_string, NULL, cli_append },
 
 
+  { "alternative", 0, NULL, MU_OPTION_DEFAULT,
+    N_("force multipart/alternative content type"),
+    mu_c_bool, &multipart_alternative },
+    
   { "skip-empty-attachments", 0, NULL, MU_OPTION_DEFAULT,
   { "skip-empty-attachments", 0, NULL, MU_OPTION_DEFAULT,
     N_("skip attachments with empty body"),
     N_("skip attachments with empty body"),
     mu_c_bool, &skip_empty_attachments },
     mu_c_bool, &skip_empty_attachments },

@@ -103,6 +103,9 @@ typedef struct compose_env
   char **outfiles;      /* Names of the output files. The message is to be
   char **outfiles;      /* Names of the output files. The message is to be
 		           saved in each of these. */
 		           saved in each of these. */
   int nfiles;           /* Number of output files */
   int nfiles;           /* Number of output files */
+  int alt;              /* Use multipart/alternative type */
+  mu_list_t attlist;    /* Attachments */
+  mu_mime_t mime;       /* Associated MIME object */
 } compose_env_t;
 } compose_env_t;
 
 
 #define MAIL_COMMAND_COMMON_MEMBERS \
 #define MAIL_COMMAND_COMMON_MEMBERS \
@@ -174,6 +177,7 @@ extern const char *program_version;
 extern char *default_encoding;
 extern char *default_encoding;
 extern char *default_content_type;
 extern char *default_content_type;
 extern int skip_empty_attachments;
 extern int skip_empty_attachments;
+extern int multipart_alternative;
 
 
 /* Functions */
 /* Functions */
 extern int mail_alias (int argc, char **argv);
 extern int mail_alias (int argc, char **argv);
@@ -259,7 +263,7 @@ extern char *mail_expand_name (const char *name);
 
 
 extern void send_append_header (char const *text);
 extern void send_append_header (char const *text);
 extern void send_append_header2 (char const *name, char const *value, int mode);
 extern void send_append_header2 (char const *name, char const *value, int mode);
-extern int send_attach_file (int fd,
+extern void send_attach_file (int fd,
 			      const char *filename,
 			      const char *filename,
 			      const char *content_filename,
 			      const char *content_filename,
 			      const char *content_name,
 			      const char *content_name,
@@ -292,6 +296,8 @@ extern int escape_list_attachments  (int argc, char **argv,
 extern int escape_attach (int argc, char **argv, compose_env_t *env);
 extern int escape_attach (int argc, char **argv, compose_env_t *env);
 extern int escape_remove_attachment (int argc, char **argv,
 extern int escape_remove_attachment (int argc, char **argv,
 				     compose_env_t *env);
 				     compose_env_t *env);
+extern int escape_toggle_multipart_type (int argc, char **argv,
+					 compose_env_t *env);
 
 
 enum
 enum
   {
   {

@@ -24,6 +24,8 @@
 static int isfilename (const char *);
 static int isfilename (const char *);
 static int msg_to_pipe (const char *cmd, mu_message_t msg);
 static int msg_to_pipe (const char *cmd, mu_message_t msg);
 
 
+int multipart_alternative;
+
 
 
 /* Additional message headers */
 /* Additional message headers */
 struct add_header
 struct add_header
@@ -143,8 +145,6 @@ struct atchinfo
   int skip_empty;
   int skip_empty;
 };
 };
 
 
-static mu_list_t attlist;
-
 static void
 static void
 atchinfo_free (void *p)
 atchinfo_free (void *p)
 {
 {
@@ -158,18 +158,62 @@ atchinfo_free (void *p)
   free (ap);
   free (ap);
 }
 }
 
 
+static mu_list_t
+attlist_new (void)
+{
+  mu_list_t lst;
+  int rc = mu_list_create (&lst);
+  if (rc)
+    {
+      mu_diag_funcall (MU_DIAG_ERROR, "mu_list_create", NULL, rc);
+      exit (1);
+    }
+  mu_list_set_destroy_item (lst, atchinfo_free);
+  return lst;
+}
+
+static void
+attlist_add (mu_list_t attlist, char *id, char const *encoding,
+	     char const *content_type, char const *content_name,
+	     char const *content_filename,
+	     mu_stream_t stream, int skip_empty)
+{
+  struct atchinfo *aptr;
+  int rc;
+  
+  aptr = mu_alloc (sizeof (*aptr));
+
+  aptr->id = id ? mu_strdup (id) : id;
+  aptr->encoding = mu_strdup (encoding);  
+  aptr->content_type = mu_strdup (content_type ?
+				  content_type : "application/octet-stream");
+  aptr->name = content_name ? mu_strdup (content_name) : NULL;
+  aptr->filename = content_filename ? mu_strdup (content_filename) : NULL;
+  aptr->source = stream;
+  if (stream)
+    mu_stream_ref (stream);
+  aptr->skip_empty = skip_empty;
+  rc = mu_list_append (attlist, aptr);
+  if (rc)
+    {
+      mu_diag_funcall (MU_DIAG_ERROR, "mu_list_append", NULL, rc);
+      exit (1);
+    }
+}
+
 int
 int
-send_attach_file (int fd,
+attlist_attach_file (mu_list_t *attlist_ptr,
+		     int fd,
 		     const char *realname,
 		     const char *realname,
 		     const char *content_filename, const char *content_name,
 		     const char *content_filename, const char *content_name,
 		     const char *content_type, const char *encoding)
 		     const char *content_type, const char *encoding)
 {
 {
   int rc;
   int rc;
   struct stat st;
   struct stat st;
-  struct atchinfo *aptr;
   mu_list_t list;
   mu_list_t list;
   mu_stream_t stream = NULL;
   mu_stream_t stream = NULL;
   char *id = NULL;
   char *id = NULL;
+  mu_list_t attlist;
   
   
   if (fd >= 0)
   if (fd >= 0)
     {
     {
@@ -238,32 +282,75 @@ send_attach_file (int fd,
       return 1;
       return 1;
     }
     }
   
   
-  if (!attlist)
-    {
-      rc = mu_list_create (&attlist);
-      if (rc)
+  if (!*attlist_ptr)
     {
     {
-	  mu_diag_funcall (MU_DIAG_ERROR, "mu_list_create", NULL, rc);
-	  exit (1);
-	}
-      mu_list_set_destroy_item (attlist, atchinfo_free);
+      attlist = attlist_new ();
+      *attlist_ptr = attlist;
     }
     }
-  aptr = mu_alloc (sizeof (*aptr));
+  else
+    attlist = *attlist_ptr;
     
     
-  aptr->id = id;
-  aptr->encoding = mu_strdup (encoding);  
-  aptr->content_type = mu_strdup (content_type ?
-				  content_type : "application/octet-stream");
-  aptr->name = content_name ? mu_strdup (content_name) : NULL;
-  aptr->filename = content_filename ? mu_strdup (content_filename) : NULL;
-  aptr->source = stream;
-  aptr->skip_empty = skip_empty_attachments;
-  rc = mu_list_append (attlist, aptr);
-  if (rc)
-    {
-      mu_diag_funcall (MU_DIAG_ERROR, "mu_list_append", NULL, rc);
-      exit (1);
-    }
+  attlist_add (attlist, id, encoding, content_type,
+	       content_name, content_filename,
+	       stream, skip_empty_attachments);
+  if (stream)
+    mu_stream_unref (stream);
+  free (id);
+
+  return 0;
+}
+
+static int
+attlist_helper (void *item, void *data)
+{
+  struct atchinfo *aptr = item;
+  mu_list_t list = data;
+  attlist_add (list, aptr->id, aptr->encoding, aptr->content_type,
+	       aptr->name, aptr->filename, aptr->source, aptr->skip_empty);
+  return 0;
+}
+
+static mu_list_t
+attlist_copy (mu_list_t src)
+{
+  mu_list_t dst;
+
+  if (!src)
+    return NULL;
+  dst = attlist_new ();
+  mu_list_foreach (src, attlist_helper, dst);
+  return dst;
+}
+
+static mu_list_t attachment_list;
+
+void
+send_attach_file (int fd,
+		  const char *realname,
+		  const char *content_filename, const char *content_name,
+		  const char *content_type, const char *encoding)
+{
+  attlist_attach_file (&attachment_list,
+		       fd,
+		       realname,
+		       content_filename,
+		       content_name,
+		       content_type,
+		       encoding);
+}
+
+static void
+report_multipart_type (compose_env_t *env)
+{
+  mu_printf ("multipart/%s\n", env->alt ? "alternative" : "mixed");
+}
+
+/* ~/ - toggle between multipart/mixed and multipart/alternative */
+int
+escape_toggle_multipart_type (int argc, char **argv, compose_env_t *env)
+{
+  env->alt = !env->alt;
+  report_multipart_type (env);
   return 0;
   return 0;
 }
 }
 
 
@@ -273,8 +360,10 @@ escape_list_attachments (int argc, char **argv, compose_env_t *env)
   mu_iterator_t itr;
   mu_iterator_t itr;
   int i;
   int i;
   
   
-  if (mu_list_is_empty (attlist) ||
-      mu_list_get_iterator (attlist, &itr))
+  report_multipart_type (env);
+
+  if (mu_list_is_empty (env->attlist) ||
+      mu_list_get_iterator (env->attlist, &itr))
     {
     {
       mu_printf ("%s\n", _("No attachments"));
       mu_printf ("%s\n", _("No attachments"));
       return 0;
       return 0;
@@ -308,7 +397,8 @@ escape_attach (int argc, char **argv, compose_env_t *env)
     case 3:
     case 3:
       content_type = argv[2];
       content_type = argv[2];
     case 2:
     case 2:
-      return send_attach_file (-1, argv[1], argv[1], argv[1],
+      return attlist_attach_file (&env->attlist,
+				  -1, argv[1], argv[1], argv[1],
 				  content_type, encoding);
 				  content_type, encoding);
     default:
     default:
       return escape_check_args (argc, argv, 2, 4);
       return escape_check_args (argc, argv, 2, 4);
@@ -332,21 +422,21 @@ escape_remove_attachment (int argc, char **argv, compose_env_t *env)
       return 1;
       return 1;
     }
     }
   
   
-  mu_list_count (attlist, &count);
+  mu_list_count (env->attlist, &count);
   if (n == 0 || n > count)
   if (n == 0 || n > count)
     {
     {
       mu_error (_("index out of range"));
       mu_error (_("index out of range"));
       return 1;
       return 1;
     }
     }
 
 
-  return mu_list_remove_nth (attlist, n - 1);
+  return mu_list_remove_nth (env->attlist, n - 1);
 }
 }
 
 
 static int
 static int
 saveatt (void *item, void *data)
 saveatt (void *item, void *data)
 {
 {
   struct atchinfo *aptr = item;
   struct atchinfo *aptr = item;
-  mu_mime_t mime = data;
+  compose_env_t *env = data;
   mu_message_t part;
   mu_message_t part;
   mu_header_t hdr;
   mu_header_t hdr;
   int rc;
   int rc;
@@ -390,13 +480,15 @@ saveatt (void *item, void *data)
 	return 0;
 	return 0;
     }
     }
       
       
-  mu_mime_get_num_parts	(mime, &nparts);
+  mu_mime_get_num_parts	(env->mime, &nparts);
   mu_message_get_header (part, &hdr);
   mu_message_get_header (part, &hdr);
+  if (env->alt)
+    mu_header_set_value (hdr, MU_HEADER_CONTENT_DISPOSITION, "inline", 1);
   mu_rfc2822_msg_id (nparts, &p);
   mu_rfc2822_msg_id (nparts, &p);
   mu_header_set_value (hdr, MU_HEADER_CONTENT_ID, p, 1);
   mu_header_set_value (hdr, MU_HEADER_CONTENT_ID, p, 1);
   free (p);
   free (p);
 
 
-  rc = mu_mime_add_part (mime, part);
+  rc = mu_mime_add_part (env->mime, part);
   mu_message_unref (part);
   mu_message_unref (part);
   if (rc)
   if (rc)
     {
     {
@@ -418,7 +510,7 @@ add_body (mu_message_t inmsg, mu_iterator_t itr, mu_mime_t mime)
   int rc;
   int rc;
   
   
   mu_message_get_body (inmsg, &body);
   mu_message_get_body (inmsg, &body);
-  if (skip_empty_attachments)
+  if (skip_empty_attachments || multipart_alternative)
     {
     {
       size_t size;
       size_t size;
       rc = mu_body_size (body, &size);
       rc = mu_body_size (body, &size);
@@ -483,7 +575,7 @@ add_body (mu_message_t inmsg, mu_iterator_t itr, mu_mime_t mime)
 }  
 }  
 
 
 static int
 static int
-add_attachments (mu_message_t *pmsg, mu_mime_t *pmime)
+add_attachments (compose_env_t *env, mu_message_t *pmsg)
 {
 {
   mu_message_t inmsg, outmsg;
   mu_message_t inmsg, outmsg;
   mu_header_t inhdr, outhdr;
   mu_header_t inhdr, outhdr;
@@ -491,16 +583,15 @@ add_attachments (mu_message_t *pmsg, mu_mime_t *pmime)
   mu_mime_t mime;  
   mu_mime_t mime;  
   int rc;
   int rc;
   
   
-  if (mu_list_is_empty (attlist))
-    {
-      *pmime = NULL;
+  if (mu_list_is_empty (env->attlist))
     return 0;
     return 0;
-    }
   
   
   inmsg = *pmsg;
   inmsg = *pmsg;
 
 
   /* Create a mime object */
   /* Create a mime object */
-  rc = mu_mime_create (&mime, NULL, 0);
+  rc = mu_mime_create (&mime, NULL,
+		       env->alt ?
+		         MU_MIME_MULTIPART_ALT : MU_MIME_MULTIPART_MIXED);
   if (rc)
   if (rc)
     {
     {
       mu_diag_funcall (MU_DIAG_ERROR, "mu_mime_create", NULL, rc);
       mu_diag_funcall (MU_DIAG_ERROR, "mu_mime_create", NULL, rc);
@@ -517,8 +608,10 @@ add_attachments (mu_message_t *pmsg, mu_mime_t *pmime)
       return 1;
       return 1;
     }
     }
 
 
+  env->mime = mime;
+
   /* Add the respective attachments */
   /* Add the respective attachments */
-  rc = mu_list_foreach (attlist, saveatt, mime);
+  rc = mu_list_foreach (env->attlist, saveatt, env);
   if (rc)
   if (rc)
     {
     {
       mu_mime_destroy (&mime);
       mu_mime_destroy (&mime);
@@ -559,7 +652,6 @@ add_attachments (mu_message_t *pmsg, mu_mime_t *pmime)
   mu_message_unref (inmsg);
   mu_message_unref (inmsg);
 
 
   *pmsg = outmsg;
   *pmsg = outmsg;
-  *pmime = mime;
   return 0;
   return 0;
 }
 }
 
 
@@ -785,6 +877,8 @@ void
 compose_init (compose_env_t *env)
 compose_init (compose_env_t *env)
 {
 {
   memset (env, 0, sizeof (*env));
   memset (env, 0, sizeof (*env));
+  env->alt = multipart_alternative;
+  env->attlist = attlist_copy (attachment_list);
   mu_list_foreach (add_header_list, seed_headers, env);
   mu_list_foreach (add_header_list, seed_headers, env);
 }
 }
 
 
@@ -873,6 +967,9 @@ compose_destroy (compose_env_t *env)
 {
 {
   mu_header_destroy (&env->header);
   mu_header_destroy (&env->header);
   free (env->outfiles);
   free (env->outfiles);
+  mu_mime_destroy (&env->mime);
+  mu_list_destroy (&env->attlist);
+  mu_stream_destroy (&env->compstr);
 }
 }
 
 
 static int
 static int
@@ -1112,7 +1209,6 @@ mail_send0 (compose_env_t *env, int save_to)
   if (rc)
   if (rc)
     {
     {
       mu_error (_("Cannot open temporary file: %s"), mu_strerror (rc));
       mu_error (_("Cannot open temporary file: %s"), mu_strerror (rc));
-      mu_list_destroy (&attlist);
       return 1;
       return 1;
     }
     }
 
 
@@ -1208,8 +1304,6 @@ mail_send0 (compose_env_t *env, int save_to)
   if (int_cnt)
   if (int_cnt)
     {
     {
       save_dead_message_env (env);
       save_dead_message_env (env);
-      mu_stream_destroy (&env->compstr);
-      mu_list_destroy (&attlist);
       return 1;
       return 1;
     }
     }
 
 
@@ -1225,7 +1319,6 @@ mail_send0 (compose_env_t *env, int save_to)
 
 
   if (util_header_expand (&env->header) == 0)
   if (util_header_expand (&env->header) == 0)
     {
     {
-      mu_mime_t mime = NULL;
       mu_message_t msg = NULL;
       mu_message_t msg = NULL;
       int status = 0;
       int status = 0;
       int sendit = (compose_header_get (env, MU_HEADER_TO, NULL) ||
       int sendit = (compose_header_get (env, MU_HEADER_TO, NULL) ||
@@ -1246,7 +1339,7 @@ mail_send0 (compose_env_t *env, int save_to)
 	  mu_message_set_header (msg, env->header, NULL);
 	  mu_message_set_header (msg, env->header, NULL);
 	  env->header = NULL;
 	  env->header = NULL;
 	  
 	  
-	  status = add_attachments (&msg, &mime);
+	  status = add_attachments (env, &msg);
 	  if (status)
 	  if (status)
 	    break;
 	    break;
 	  
 	  
@@ -1323,14 +1416,10 @@ mail_send0 (compose_env_t *env, int save_to)
 
 
       mu_stream_destroy (&env->compstr);
       mu_stream_destroy (&env->compstr);
       mu_message_destroy (&msg, NULL);
       mu_message_destroy (&msg, NULL);
-      mu_mime_destroy (&mime);
       return status;
       return status;
     }
     }
   else
   else
     save_dead_message_env (env);
     save_dead_message_env (env);
-  
-  mu_stream_destroy (&env->compstr);
-  mu_list_destroy (&attlist);
   return 1;
   return 1;
 }
 }
 
 

@@ -228,6 +228,7 @@ static const struct mail_escape_entry mail_escape_table[] = {
   {"-",	"-",	"-[mail-command]",  escape_command },
   {"-",	"-",	"-[mail-command]",  escape_command },
   {"+",	"+",	"+name [content-type [encoding]]", escape_attach },
   {"+",	"+",	"+name [content-type [encoding]]", escape_attach },
   {"^",	"^",	"^N",               escape_remove_attachment },
   {"^",	"^",	"^N",               escape_remove_attachment },
+  {"/", "/",    "/",                escape_toggle_multipart_type },
   {"?",	"?",	"?",		    escape_help },
   {"?",	"?",	"?",		    escape_help },
   {"A",	"A",	"A",		    escape_sign },
   {"A",	"A",	"A",		    escape_sign },
   {"a",	"a",	"a",		    escape_sign },
   {"a",	"a",	"a",		    escape_sign },

@@ -706,7 +706,7 @@ util_save_outgoing (mu_message_t msg, char *savefile)
       if (rc)
       if (rc)
 	{
 	{
 	  mu_error (_("Cannot create output mailbox `%s': %s"),
 	  mu_error (_("Cannot create output mailbox `%s': %s"),
-		      filename, strerror (rc));
+		      filename, mu_strerror (rc));
 	  free (filename);
 	  free (filename);
 	  return;
 	  return;
 	}
 	}
@@ -714,13 +714,13 @@ util_save_outgoing (mu_message_t msg, char *savefile)
       rc = mu_mailbox_open (outbox, MU_STREAM_WRITE | MU_STREAM_CREAT);
       rc = mu_mailbox_open (outbox, MU_STREAM_WRITE | MU_STREAM_CREAT);
       if (rc)
       if (rc)
 	mu_error (_("Cannot open output mailbox `%s': %s"),
 	mu_error (_("Cannot open output mailbox `%s': %s"),
-		    filename, strerror (rc));
+		    filename, mu_strerror (rc));
       else
       else
 	{
 	{
 	  rc = mu_mailbox_append_message (outbox, msg);
 	  rc = mu_mailbox_append_message (outbox, msg);
 	  if (rc)
 	  if (rc)
 	    mu_error (_("Cannot append message to `%s': %s"),
 	    mu_error (_("Cannot append message to `%s': %s"),
-			filename, strerror (rc));
+			filename, mu_strerror (rc));
 	}
 	}
 
 
       mu_mailbox_close (outbox);
       mu_mailbox_close (outbox);