Parser

- Implemented ::capture_last, so that new args can be injected at either end
  of the command line.

src/Parser.cpp

@@ -531,6 +531,22 @@ Tree* Parser::captureFirst (const std::string& arg)
   return t;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+Tree* Parser::captureLast (const std::string& arg)
+{
+  // Insert the arg as the new first branch.
+  Tree* t = new Tree ("argIns");
+  if (!t)
+    throw std::string (STRING_ERROR_MEMORY);
+
+  t->attribute ("raw", arg);
+  t->tag ("?");
+  t->_trunk = _tree;
+
+  _tree->_branches.push_back (t);
+  return t;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 const std::string Parser::getFilterExpression ()
 {

src/Parser.h

@@ -57,6 +57,7 @@ public:
   void applyOverrides ();
   void injectDefaults ();
   Tree* captureFirst (const std::string&);
+  Tree* captureLast (const std::string&);
 
   const std::string getFilterExpression ();
   const std::vector <std::string> getWords () const;