Index: gpgme/verify.c
===================================================================
--- gpgme/verify.c	(revision 1208)
+++ gpgme/verify.c	(working copy)
@@ -40,6 +40,7 @@
   gpgme_signature_t current_sig;
   int did_prepare_new_sig;
   int only_newsig_seen;
+  int plaintext_seen;
 } *op_data_t;
 
 
@@ -549,8 +550,11 @@
 }
 
 
+/* Parse an error status line and if SET_STATUS is true update the
+   result status as appropriate.  With SET_STATUS being false, only
+   check for an error.  */
 static gpgme_error_t
-parse_error (gpgme_signature_t sig, char *args)
+parse_error (gpgme_signature_t sig, char *args, int set_status)
 {
   gpgme_error_t err;
   char *where = strchr (args, ' ');
@@ -572,7 +576,16 @@
 
   err = _gpgme_map_gnupg_error (which);
 
-  if (!strcmp (where, "verify.findkey"))
+  if (!strcmp (where, "proc_pkt.plaintext")
+      && gpg_err_code (err) == GPG_ERR_BAD_DATA)
+    {
+      /* This indicates a double plaintext.  The only solid way to
+         handle this is by failing the oepration.  */
+      return gpg_error (GPG_ERR_BAD_DATA);
+    }
+  else if (!set_status)
+    ;
+  else if (!strcmp (where, "verify.findkey"))
     sig->status = err;
   else if (!strcmp (where, "verify.keyusage")
 	   && gpg_err_code (err) == GPG_ERR_WRONG_KEY_USAGE)
@@ -670,9 +683,9 @@
 
     case GPGME_STATUS_ERROR:
       opd->only_newsig_seen = 0;
-      /* The error status is informational, so we don't return an
-         error code if we are not ready to process this status. */
-      return sig ? parse_error (sig, args) : 0;
+      /* Some  error stati are informational, so we don't return an
+         error code if we are not ready to process this status.  */
+      return parse_error (sig, args, !!sig );
 
     case GPGME_STATUS_EOF:
       if (sig && !opd->did_prepare_new_sig)
@@ -703,6 +716,8 @@
       break;
 
     case GPGME_STATUS_PLAINTEXT:
+      if (++opd->plaintext_seen > 1)
+        return gpg_error (GPG_ERR_BAD_DATA);
       err = _gpgme_parse_plaintext (args, &opd->result.file_name);
       if (err)
 	return err;