support line termination ($$) as immediate editing command + some fixes

 * separate function for immediate editing command processing
 * undo.clear() to remove and free all undo tokens without executing them
 * goto_table_clear() to remove and free all goto table entries

1 files changed, 11 insertions, 0 deletions

diff --git a/undo.cpp b/undo.cpp
index 106f812..7a58c92 100644
--- a/undo.cpp
+++ b/undo.cpp
@@ -47,6 +47,17 @@ UndoStack::pop(gint pos)
 	}
 }
 
+void
+UndoStack::clear(void)
+{
+	UndoToken *cur;
+
+	while ((cur = SLIST_FIRST(&head))) {
+		SLIST_REMOVE_HEAD(&head, tokens);
+		delete cur;
+	}
+}
+
 UndoStack::~UndoStack()
 {
 	UndoToken *token, *next;