Bump the version number of the generated byte-code; it looks a bit

different now!

Use saved type objects when calling isinstance() instead of calling
type() each time.

getProgramMode(), getProgramVersion():
    Update to the new byte-code format.

quote():
    Change the way cgi.escape() is referenced to avoid runtime
    lookups.

lib/python/TAL/TALDefs.py

@@ -86,7 +86,9 @@
 Common definitions used by TAL and METAL compilation an transformation.
 """
 
-TAL_VERSION = "1.3"
+from types import ListType, TupleType
+
+TAL_VERSION = "1.4"
 
 XML_NS = "http://www.w3.org/XML/1998/namespace" # URI for XML namespace
 XMLNS_NS = "http://www.w3.org/2000/xmlns/" # URI for XML NS declarations
@@ -195,23 +197,22 @@ def isCurrentVersion(program):
 
 def getProgramMode(program):
     version = getProgramVersion(program)
-    if (version == TAL_VERSION and isinstance(program[1], type(())) and
+    if (version == TAL_VERSION and isinstance(program[1], TupleType) and
         len(program[1]) == 2):
         opcode, mode = program[1]
         if opcode == "mode":
-            return mode
+            return mode[0]
     return None
 
 def getProgramVersion(program):
-    if (isinstance(program, type([])) and len(program) >= 2 and
-        isinstance(program[0], type(())) and len(program[0]) == 2):
+    if (isinstance(program, ListType) and len(program) >= 2 and
+        isinstance(program[0], TupleType) and len(program[0]) == 2):
         opcode, version = program[0]
         if opcode == "version":
-            return version
+            return version[0]
     return None
 
 import cgi
-_cgi = cgi
+def quote(s, escape=cgi.escape):
+    return '"%s"' % escape(s, 1)
 del cgi
-def quote(s):
-    return '"%s"' % _cgi.escape(s, 1)