Add TLS to MH. Handle --debug-level and --debug-line-info options.

* mailbox/mbx_default.c (attach_auth_ticket): Do not
proceed if auth is NULL.
* mh/mh_getopt.h (struct mh_argp_data): Change return type
and signature of handler.
(mh_argp_parse): Likewise.
* mh/mh_argp.c (parse_opt): Rewrite using new
handler prototype.
(mh_argp_parse): Use new hanlder type.
Assign argp children.

* mh/mh_init.c (mh_init): Call mu_init_tls_libs.

* mh/ali.c: Update opt_handler
* mh/anno.c: Update opt_handler
* mh/burst.c: Update opt_handler
* mh/comp.c: Update opt_handler
* mh/fmtcheck.c: Update opt_handler
* mh/folder.c: Update opt_handler
* mh/forw.c: Update opt_handler
* mh/inc.c: Update opt_handler
* mh/install-mh.c: Update opt_handler
* mh/mark.c: Update opt_handler
* mh/mhl.c: Update opt_handler
* mh/mhn.c: Update opt_handler
* mh/mhparam.c: Update opt_handler
* mh/mhpath.c: Update opt_handler
* mh/pick.c: Update opt_handler
* mh/refile.c: Update opt_handler
* mh/repl.c: Update opt_handler
* mh/rmf.c: Update opt_handler
* mh/rmm.c: Update opt_handler
* mh/scan.c: Update opt_handler
* mh/send.c: Update opt_handler
* mh/sortm.c: Update opt_handler
* mh/whatnow.c: Update opt_handler
* mh/whom.c: Update opt_handler

@@ -340,7 +340,8 @@ attach_auth_ticket (mu_mailbox_t mbox)
   mu_authority_t auth = NULL;
 
   if (mu_mailbox_get_folder (mbox, &folder) == 0
-      && mu_folder_get_authority (folder, &auth) == 0)
+      && mu_folder_get_authority (folder, &auth) == 0
+      && auth)
     {
       char *filename = mu_tilde_expansion (mu_ticket_file, "/", NULL);
       mu_wicket_t wicket;

@@ -64,8 +64,8 @@ static int user_mode;
 static int normalize_mode;
 static int nolist_mode;
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -94,7 +94,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -58,8 +58,8 @@ static int anno_date = 1; /* Add date to the annotation */
 static char *component;   /* header field */
 static char *anno_text;   /* header field value */
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -96,7 +96,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -69,8 +69,8 @@ int eb_min_length = 1;  /* Minimal length of encapsulation boundary */
 
 #define VERBOSE(c) do { if (verbose) { printf c; putchar ('\n'); } } while (0)
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -121,7 +121,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
       
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -83,8 +83,8 @@ static int build_only = 0; /* --build flag */
 static int use_draft = 0;  /* --use flag */
 static char *draftmessage = "new";
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -148,7 +148,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -68,8 +68,8 @@ action_dump ()
 
 static action_fp action = action_dump;
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -94,7 +94,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -136,7 +136,7 @@ size_t max_depth = 1;  /* Maximum recursion depth (0 means infinity) */
 #define OPTION_IS_SET(opt) ((opt) == -1 ? show_all : opt)
 
 static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -234,7 +234,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
       
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -117,7 +117,7 @@ static mh_msgset_t msgset;
 static mu_mailbox_t mbox;
 
 static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -214,7 +214,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -79,8 +79,8 @@ static int truncate_source = -1;
 static int quiet = 0;
 static const char *append_folder;
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -147,7 +147,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -40,8 +40,8 @@ struct mh_option mh_option[] = {
 
 int automode;
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -57,7 +57,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -75,8 +75,8 @@ add_sequence (char *name)
   mu_list_append (seq_list, name);
 }
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -121,7 +121,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

 /* GNU Mailutils -- a suite of utilities for electronic mail
    Copyright (C) 1999, 2000, 2001, 2002, 2005,
-   2006, 2007 Free Software Foundation, Inc.
+   2006, 2007, 2009 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -33,26 +33,25 @@ static error_t
 parse_opt (int key, char *arg, struct argp_state *state)
 {
   struct mh_argp_data *data = state->input;
+  error_t ret = ARGP_ERR_UNKNOWN;
+  
   switch (key)
     {
     case ARGP_KEY_ARG:
       if (arg[0] == '+')
-	{
-	  data->handler (ARG_FOLDER, arg + 1, data->closure);
-	  break;
-	}
-      return ARGP_ERR_UNKNOWN;
-
+	ret = data->handler (ARG_FOLDER, arg + 1, state);
+      break;
+      
     default:
-      if (data->handler (key, arg, data->closure, state) == 0)
+      ret = data->handler (key, arg, state);
+      if (ret == 0)
 	{
 	  if (key == ARGP_KEY_ERROR)
 	    data->errind = state->next;
-	  break;
 	}
-      return ARGP_ERR_UNKNOWN;
     }
-  return 0;
+
+  return ret;
 }
 
 static int
@@ -101,13 +100,59 @@ mh_argp_init (const char *vers)
   argp_program_bug_address =  "<" PACKAGE_BUGREPORT ">";
 }
 
+
+enum
+  {
+    OPT_DEBUG_LEVEL = 256,
+    OPT_DEBUG_LINE_INFO,
+  };
+
+static struct argp_option mu_debug_argp_options[] = 
+{
+  { "debug-level", OPT_DEBUG_LEVEL, N_("LEVEL"), 0,
+    N_("set Mailutils debugging level"), 0 },
+  { "debug-line-info", OPT_DEBUG_LINE_INFO, NULL, 0,
+    N_("show source info with debugging messages"), 0 },
+  { NULL }
+};
+
+static error_t
+mu_debug_argp_parser (int key, char *arg, struct argp_state *state)
+{
+  switch (key)
+    {
+    case OPT_DEBUG_LEVEL:
+      mu_global_debug_from_string (arg, "command line");
+      break;
+
+    case OPT_DEBUG_LINE_INFO:
+      mu_debug_line_info = 1;
+      break;
+      
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+struct argp mu_debug_argp = {
+  mu_debug_argp_options,
+  mu_debug_argp_parser,
+};
+
+struct argp_child mh_argp_children[] = {
+  { &mu_debug_argp, 0, N_("Global debugging settings"), 0 },
+  { NULL }
+};
+
 int
 mh_argp_parse (int *pargc, char **pargv[],
 	       int flags,
 	       struct argp_option *option,
 	       struct mh_option *mh_option,
 	       char *argp_doc, char *doc,
-	       int (*handler)(), void *closure, int *pindex)
+	       argp_parser_t handler,
+	       void *closure, int *pindex)
 {
   struct argp argp;
   struct mh_argp_data data;
@@ -123,6 +168,7 @@ mh_argp_parse (int *pargc, char **pargv[],
   argp.parser = parse_opt;
   argp.args_doc = argp_doc;
   argp.doc = doc;
+  argp.children = mh_argp_children;
   data.mh_option = mh_option;
   data.closure = closure;
   data.handler = handler;

@@ -34,7 +34,7 @@ struct mh_option
 struct mh_argp_data
 {
   struct mh_option *mh_option;
-  int (*handler)();
+  argp_parser_t handler;
   int errind;
   void *closure;
   char *doc;
@@ -190,7 +190,8 @@ int mh_argp_parse (int *argc, char **argv[],
 		   struct argp_option *option,
 		   struct mh_option *mh_option,
 		   char *argp_doc, char *doc,
-		   int (*handler)(), void *closure, int *index);
+		   argp_parser_t handler,
+		   void *closure, int *index);
 
 void mh_help (struct mh_option *mh_option, const char *doc);
 void mh_license (const char *name);

@@ -21,6 +21,7 @@
 
 #include <mh.h>
 #include <mailutils/url.h>
+#include <mailutils/tls.h>
 #include <pwd.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -46,6 +47,9 @@ mh_init ()
 {
   /* Register all mailbox and mailer formats */
   mu_register_all_formats ();
+#ifdef WITH_TLS
+  mu_init_tls_libs ();
+#endif
 
   /* Read user's profile */
   mh_read_profile ();

@@ -75,8 +75,8 @@ static int nomoreproc;
 
 static mu_list_t format;
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -137,7 +137,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -242,8 +242,8 @@ _get_content_encoding (mu_header_t hdr, char **value)
   return 0;
 }
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -398,7 +398,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -46,8 +46,8 @@ struct mh_option mh_option[] = {
 static int display_all;
 static int display_comp_name = -1;
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -64,7 +64,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -39,8 +39,8 @@ struct mh_option mh_option[] = {
   { 0 }
 };
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -53,7 +53,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -143,8 +143,8 @@ add_sequence (char *name)
   mu_list_append (seq_list, name);
 }
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   char *s, *p;
   
@@ -291,7 +291,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
 
   return 0;

@@ -151,7 +151,7 @@ close_folders ()
 }
 
 static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -184,7 +184,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -138,8 +138,8 @@ decode_cc_flag (const char *opt, const char *arg)
   return rc;
 }
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   char *s;
   
@@ -271,7 +271,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
       
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -64,8 +64,8 @@ static char *cur_folder_path; /* Full pathname of the current folder */
 static char *folder_name;     /* Name of the (topmost) folder to be
 				 deleted */
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -95,7 +95,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -39,8 +39,8 @@ struct mh_option mh_option[] = {
   { 0 }
 };
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -53,7 +53,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -87,8 +87,8 @@ void list_message (mu_mailbox_t mbox, mu_message_t msg, size_t num, void *data);
 void print_header (mu_mailbox_t mbox);
 void clear_screen (void);
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -142,7 +142,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
       
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -131,8 +131,8 @@ static int keep_files;           /* Keep draft files */
     watch_printf c;\
 } while (0)
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   char *p;
   
@@ -257,7 +257,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -116,8 +116,8 @@ static int comp_text (void *a, void *b);
 static int comp_date (void *a, void *b);
 static int comp_number (void *a, void *b);
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -196,7 +196,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -57,8 +57,8 @@ struct mh_whatnow_env wh_env = { 0 };
 static int initial_edit = 1;
 static char *draftmessage = "cur";
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -96,7 +96,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }

@@ -60,8 +60,8 @@ static int check_recipients;
 static int use_draft;            /* Use the prepared draft */
 static const char *draft_folder; /* Use this draft folder */
 
-static int
-opt_handler (int key, char *arg, void *unused, struct argp_state *state)
+static error_t
+opt_handler (int key, char *arg, struct argp_state *state)
 {
   switch (key)
     {
@@ -100,7 +100,7 @@ opt_handler (int key, char *arg, void *unused, struct argp_state *state)
       break;
 
     default:
-      return 1;
+      return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }