[stringtemplate-interest] problem with simple group inheritance

[Chris Pizzi]

I am having a problem with simple group inheritance in Python
stringtemplate 3.1.  It seems that if a template is not found under the
sub-group's root directory, it never tries to find it in the super-group's.

Given this directory layout:

./super/sup.st
./sub/sub.st

with super.st containing:

SUPER

and sub.st containing:

SUB $sup()$

I would expect the following to yield "SUB SUPER", however I get an
error instead:

 >>> from stringtemplate3 import StringTemplateGroup
 >>> sup = StringTemplateGroup("super","./super")
 >>> sub = StringTemplateGroup("sub","./sub")
 >>> sub.superGroup = sup
 >>> print sub.getInstanceOf("sub")
 Got IOError writing to writerAutoIndentWriter
 SUB
 >>>

Am I misunderstanding inheritance, or is this actually a problem?  For
now I have patched groups.py to make it behave the way I'm expecting:

--- groups.py   2008-06-18 12:36:30.000000000 -0400
+++ /tmp/groups.py      2008-06-18 12:43:48.000000000 -0400
@@ -477,6 +477,8 @@
                     br.close()

             # FIXME: eek, that's ugly
+            except IOError:
+                template = None
             except Exception, e:
                 raise

-- 
Chris Pizzi
Sr. Programmer
National In-Store


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