fix for use function

hublib/__init__.py

@@ -1 +1 @@
-__version__ = "0.02"
+__version__ = "0.5"

hublib/use/__init__.py

@@ -1,27 +1,26 @@
 import sys
 import os
 from IPython.core.magic import register_line_magic
-
+from string import Template
 
 """
-Line magic to allow the 'use' command to load environment modules.
+Line magic to allow the 'use' command to load hub environment modules.
 This works on the current environment, so we cannot simply fork a shell.
 Maybe some trick to fork a shell and return the modified environment would work?
 For now lets see how this works.  Just implement "setenv", "prepend", and "use".
 Works for all currently installed modules except two old ones that use local shell variables.
 """
 
 EPATH = '/apps/share64/debian7/environ.d'
+d = {}
 
 
 def setenv(line):
-    # print 'SETENV', line
     name, val = line
     os.environ[name] = val
 
 
 def prepend(line):
-    # print 'PREPEND', line
     name, val = line
     try:
         oldval = os.environ[name]
@@ -31,23 +30,34 @@ def prepend(line):
     os.environ[name] = val
 
 
+def _set(a, b):
+    global d
+    t = Template(b)
+    b = t.safe_substitute(d)
+    d[a] = b
+
+
 def _use(name):
-    fname = os.path.join(EPATH, name)
+    if not name[0] == '.':
+        fname = os.path.join(EPATH, name)
 
     with open(fname) as fp:
         for line in fp:
-            line = line.strip().split()
-            if line == []:
+            sline = line.strip().split()
+            if sline == []:
                 continue
-            if line[0] == 'prepend':
-                prepend(line[1:])
+            if sline[0] == 'prepend':
+                prepend(sline[1:])
                 continue
-            if line[0] == 'setenv':
-                setenv(line[1:])
+            if sline[0] == 'setenv':
+                setenv(sline[1:])
                 continue
-            if line[0] == 'use':
-                _use(line[-1])
-
+            if sline[0] == 'use':
+                _use(sline[-1])
+                continue
+            line = line.split("=")
+            if len(line) == 2:
+                _set(line[0].strip(), line[1].strip())
 
 @register_line_magic
 def use(name):