Now supports a ~/.sieverc file. Mine looks like:

  # ~/.sieverc
  #   Just moves my mail into my local spool.
  -dTt --ticket=~/.tickets
  -f pop://pop.uniserve.com
  ~/.filter.sv

@@ -10,18 +10,23 @@ sieve script interpreter.
 
 #include <assert.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
+#include <sys/stat.h>
+
+#include <argcv.h>
 #include <argp.h>
 
 #include "sieve.h"
 
-#include <mailutils/registrar.h>
 #include <mailutils/mailbox.h>
+#include <mailutils/mutil.h>
+#include <mailutils/registrar.h>
 
 void mutil_register_all_mbox_formats(void);
 
@@ -39,6 +44,8 @@ static char doc[] =
   "  q - sieve message queries (SV_DEBUG_MSG_QUERY)\n"
   ;
 
+#define D_DEFAULT "TPt"
+
 static struct argp_option options[] = {
   {"no-actions", 'n', 0, 0,
    "No actions executed, just print what would be done", 0},
@@ -59,7 +66,7 @@ static struct argp_option options[] = {
    "Mailer URL (defaults to \"sendmail:\")", 0},
 
   {"debug", 'd', "FLAGS", OPTION_ARG_OPTIONAL,
-   "Debug flags (defaults to \"TPt\")", 0},
+   "Debug flags (defaults to \"" D_DEFAULT "\")", 0},
 
   {0}
 };
@@ -74,6 +81,8 @@ struct options
   int debug_level;
   char *mailer;
   char *script;
+
+  int final; /* final arg pass */
 };
 
 static error_t
@@ -84,8 +93,12 @@ parser (int key, char *arg, struct argp_state *state)
   switch (key)
     {
     case ARGP_KEY_INIT:
-      opts->mailer = "sendmail:";
-      opts->debug_level = MU_DEBUG_ERROR;
+      if (!opts->tickets)
+	opts->tickets = mu_tilde_expansion ("~/.tickets", "/", NULL);
+      if (!opts->mailer)
+	opts->mailer = strdup ("sendmail:");
+      if(!opts->debug_level)
+	opts->debug_level = MU_DEBUG_ERROR;
       break;
     case 'n':
       opts->no_actions = SV_FLAG_NO_ACTIONS;
@@ -97,12 +110,21 @@ parser (int key, char *arg, struct argp_state *state)
       opts->compile_only = 1;
       break;
     case 'f':
-      opts->mbox = arg;
+      if(opts->mbox)
+	argp_error (state, "only one MBOX can be specified");
+      opts->mbox = strdup(arg);
       break;
     case 't':
-      opts->tickets = arg;
+      free (opts->tickets);
+      opts->tickets = mu_tilde_expansion (arg, "/", NULL);
+      break;
+    case 'm':
+      free (opts->mailer);
+      opts->mailer = strdup(arg);
       break;
     case 'd':
+      if(!arg)
+	arg = D_DEFAULT;
       for (; *arg; arg++)
 	{
 	  switch (*arg)
@@ -132,12 +154,12 @@ parser (int key, char *arg, struct argp_state *state)
     case ARGP_KEY_ARG:
       if (opts->script)
 	argp_error (state, "only one SCRIPT can be specified");
-      opts->script = arg;
+      opts->script = mu_tilde_expansion (arg, "/", NULL);
       break;
 
     case ARGP_KEY_NO_ARGS:
-      argp_error (state, "SCRIPT must be specified");
-      break;
+      if (opts->final && !opts->script)
+	argp_error (state, "SCRIPT must be specified");
 
     default:
       return ARGP_ERR_UNKNOWN;
@@ -197,6 +219,72 @@ debug_print (mu_debug_t debug, size_t level, const char *fmt, va_list ap)
   return 0;
 }
 
+static int
+dot_parse (int argc, char *argv[], struct options *opts)
+{
+  int err = 0;
+  char *rcfile = mu_tilde_expansion ("~/.sieverc", "/", NULL);
+  struct stat s;
+  char *cmd = 0;
+  int fd = -1;
+  int ac = 0;
+  char **av = 0;
+
+  if (!rcfile)
+    return ENOMEM;
+
+  /* Chomp argv[0] down to the last path component. */
+  {
+    char* n = argv[0] + strlen(argv[0]);
+    while(n > argv[0] && *n != '/')
+      n--;
+    if(*n == '/')
+      n++;
+    argv[0] = n;
+  }
+
+  fd = open (rcfile, O_RDONLY, 0);
+
+  free (rcfile);
+  rcfile = 0;
+
+  if (fd != -1)
+    {
+      if ((err = fstat (fd, &s)) == -1)
+	return errno;
+
+      if ((cmd = malloc (s.st_size + 1 + strlen (argv[0]) + 1)) == NULL)
+	return ENOMEM;
+
+      strcpy (cmd, argv[0]);
+      strcat (cmd, " ");
+      err = read (fd, &cmd[strlen (argv[0]) + 1], s.st_size);
+
+      close (fd);
+
+      if (err == -1)
+	{
+	  free (cmd);
+	  return errno;
+	}
+
+      cmd[strlen (argv[0]) + 1 + err] = '\0';
+
+      argcv_get (cmd, "", "#", &ac, &av);
+
+      argp_parse (&argp, ac, av, ARGP_IN_ORDER, NULL, opts);
+
+      argcv_free (ac, av);
+
+      free (cmd);
+    }
+
+  opts->final = 1;
+
+  argp_parse (&argp, argc, argv, ARGP_IN_ORDER, NULL, opts);
+
+  return 0;
+}
 int
 main (int argc, char *argv[])
 {
@@ -215,7 +303,12 @@ main (int argc, char *argv[])
 
   int rc = 0;
 
-  argp_parse (&argp, argc, argv, ARGP_IN_ORDER, NULL, &opts);
+  rc = dot_parse(argc, argv, &opts);
+
+  if(rc) {
+      fprintf (stderr, "arg parsing failed: %s\n", sv_strerror (rc));
+      return 1;
+  }
 
   mutil_register_all_mbox_formats ();