diff -urN -x'*~' -xTAGS sylpheed-0.9.1-orig/src/action.c sylpheed-0.9.1/src/action.c
--- sylpheed-0.9.1-orig/src/action.c	2003-05-26 07:58:32 +0400
+++ sylpheed-0.9.1/src/action.c	2003-06-01 16:57:58 +0400
@@ -1227,7 +1227,8 @@
 			   "  %s"),
 			 action);
 		user_str = input_dialog_with_invisible
-			(_("Action's hidden user argument"), message, NULL);
+			(_("Action's hidden user argument"), message, NULL,
+			 TRUE);
 		break;
 	case ACTION_USER_STR:
 		message = g_strdup_printf
diff -urN -x'*~' -xTAGS sylpheed-0.9.1-orig/src/inputdialog.c sylpheed-0.9.1/src/inputdialog.c
--- sylpheed-0.9.1-orig/src/inputdialog.c	2003-04-21 15:27:44 +0400
+++ sylpheed-0.9.1/src/inputdialog.c	2003-06-01 16:59:26 +0400
@@ -64,7 +64,8 @@
 static void input_dialog_create	(void);
 static gchar *input_dialog_open	(const gchar	*title,
 				 const gchar	*message,
-				 const gchar	*default_string);
+				 const gchar	*default_string,
+				 gboolean	 accept_empty);
 static void input_dialog_set	(const gchar	*title,
 				 const gchar	*message,
 				 const gchar	*default_string);
@@ -96,11 +97,12 @@
 	gtk_widget_show(entry);
 	gtk_entry_set_visibility(GTK_ENTRY(entry), TRUE);
 
-	return input_dialog_open(title, message, default_string);
+	return input_dialog_open(title, message, default_string, FALSE);
 }
 
 gchar *input_dialog_with_invisible(const gchar *title, const gchar *message,
-				   const gchar *default_string)
+				   const gchar *default_string,
+				   gboolean accept_empty)
 {
 	if (dialog && GTK_WIDGET_VISIBLE(dialog)) return NULL;
 
@@ -112,7 +114,7 @@
 	gtk_widget_show(entry);
 	gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
 
-	return input_dialog_open(title, message, default_string);
+	return input_dialog_open(title, message, default_string, accept_empty);
 }
 
 gchar *input_dialog_combo(const gchar *title, const gchar *message,
@@ -140,7 +142,7 @@
 
 	gtk_combo_set_case_sensitive(GTK_COMBO(combo), case_sensitive);
 
-	return input_dialog_open(title, message, default_string);
+	return input_dialog_open(title, message, default_string, FALSE);
 }
 
 gchar *input_dialog_query_password(const gchar *server, const gchar *user)
@@ -150,7 +152,8 @@
 
 	message = g_strdup_printf(_("Input password for %s on %s:"),
 				  user, server);
-	pass = input_dialog_with_invisible(_("Input password"), message, NULL);
+	pass = input_dialog_with_invisible(_("Input password"), message, NULL,
+					   TRUE);
 	g_free(message);
 
 	return pass;
@@ -216,7 +219,8 @@
 }
 
 static gchar *input_dialog_open(const gchar *title, const gchar *message,
-				const gchar *default_string)
+				const gchar *default_string,
+				gboolean accept_empty)
 {
 	gchar *str;
 
@@ -244,7 +248,7 @@
 			editable = GTK_EDITABLE(entry);
 
 		str = gtk_editable_get_chars(editable, 0, -1);
-		if (str && *str == '\0') {
+		if (!accept_empty && str && *str == '\0') {
 			g_free(str);
 			str = NULL;
 		}
diff -urN -x'*~' -xTAGS sylpheed-0.9.1-orig/src/inputdialog.h sylpheed-0.9.1/src/inputdialog.h
--- sylpheed-0.9.1-orig/src/inputdialog.h	2002-04-22 05:13:26 +0400
+++ sylpheed-0.9.1/src/inputdialog.h	2003-06-01 16:57:58 +0400
@@ -27,7 +27,8 @@
 					 const gchar	*default_string);
 gchar *input_dialog_with_invisible	(const gchar	*title,
 					 const gchar	*message,
-					 const gchar	*default_string);
+					 const gchar	*default_string,
+					 gboolean	 accept_empty);
 gchar *input_dialog_combo		(const gchar	*title,
 					 const gchar	*message,
 					 const gchar	*default_string,