Added a "default_line" parameter to the readline method, which pre-po…

…pulates the input line with the string of your choice. Also added a "replace_line" method, for use in callbacks that replace the entire line.

lib/coolline/coolline.rb

@@ -183,21 +183,20 @@ def word_boundaries=(array)
 
   # Reads a line from the terminal
   # @param [String] prompt Characters to print before each line
-  def readline(prompt = ">> ")
+  def readline(prompt = ">> ", default_line = "")
     @prompt = prompt
 
     @history.delete_empty
 
-    @line        = ""
-    @pos         = 0
+    @line        = default_line
+    @pos         = @line.size
     @accumulator = nil
 
     @history_moved = false
 
     @should_exit = false
 
-    reset_line
-    print @prompt
+    render
 
     @history.index = @history.size - 1
     @history << @line
@@ -407,6 +406,11 @@ def word_boundary?(char)
     char =~ word_boundaries_regexp
   end
 
+  def replace_line(new_line)
+    @line = new_line
+    @pos = new_line.size
+  end
+
   private
   def transform(line)
     @transform_proc.call(line)