Allow Blockext vars in block text

1 files changed, 5 insertions, 1 deletions

diff --git a/blockext/__init__.py b/blockext/__init__.py
index 6f3eede..c1779a5 100644
--- a/blockext/__init__.py
+++ b/blockext/__init__.py
@@ -227,7 +227,7 @@ class Block(object):
         if blocking and shape != "command":
             raise ValueError("only commands can be blocking")
 
-        self.text = text
+        self._text = text
         self.shape = shape
         self.func = func
         self.is_blocking = blocking
@@ -247,6 +247,10 @@ class Block(object):
         shape_defaults = map(Block.INPUT_DEFAULTS.get, self.arg_shapes)
         self.defaults = [a or b for (a, b) in zip(defaults, shape_defaults)]
 
+    @property
+    def text(self):
+        return self._text.format(**vars(Blockext))
+
     def __repr__(self):
         return "<Block(%r)>" % self.text