t/README: start testing porcelainish

diff --git a/gitMergeCommon.py b/gitMergeCommon.py
index 3af4fbd1539dd9979575c71d3e9a5e37ac3b0868..fdbf9e4778fd7d44667e475ba659d64986b2e097 100644 (file)
--- a/gitMergeCommon.py
+++ b/gitMergeCommon.py
@@ -1,3 +1,7 @@
+#
+# Copyright (C) 2005 Fredrik Kuivinen
+#
+
 import sys, re, os, traceback
 from sets import Set
 
@@ -11,12 +15,6 @@ def printList(list, file=sys.stdout):
         file.write(' ')
     file.write('\n')
 
-if sys.version_info[0] < 2 or \
-       (sys.version_info[0] == 2 and sys.version_info[1] < 4):
-    die('Python version 2.4 required, found', \
-        str(sys.version_info[0])+'.'+str(sys.version_info[1])+'.'+ \
-        str(sys.version_info[2]))
-
 import subprocess
 
 # Debugging machinery
@@ -109,7 +107,10 @@ def isSha(obj):
     return (type(obj) is str and bool(shaRE.match(obj))) or \
            (type(obj) is int and obj >= 1)
 
-class Commit:
+class Commit(object):
+    __slots__ = ['parents', 'firstLineMsg', 'children', '_tree', 'sha',
+                 'virtual']
+
     def __init__(self, sha, parents, tree=None):
         self.parents = parents
         self.firstLineMsg = None
@@ -219,7 +220,7 @@ def buildGraph(heads):
 
 # Write the empty tree to the object database and return its SHA1
 def writeEmptyTree():
-    tmpIndex = os.environ['GIT_DIR'] + '/merge-tmp-index'
+    tmpIndex = os.environ.get('GIT_DIR', '.git') + '/merge-tmp-index'
     def delTmpIndex():
         try:
             os.unlink(tmpIndex)