cd -foo jumps to dir matching 'foo' in directory history

IPython/Extensions/ipy_leo.py

@@ -12,6 +12,8 b' from IPython.ipapi import TryNext'
 import IPython.macro
 import IPython.Shell
 
+__leo_push_history = set()
+
 def init_ipython(ipy):
     """ This will be run by _ip.load('ipy_leo') 
     
@@ -336,6 +338,17 b' class LeoWorkbook:'
             if re.match(cmp, node.h, re.IGNORECASE):
                 yield node
         return
+    def require(self, req):
+        """ Used to control node push dependencies 
+        
+        Call this as first statement in nodes. If node has not been pushed, it will be pushed before proceeding
+        
+        E.g. wb.require('foo') will do wb.foo.ipush() if it hasn't been done already
+        """
+        
+        if req not in __leo_push_history:
+            getattr(self.req).ipush()
+     
 
 @IPython.generics.complete_object.when_type(LeoWorkbook)
 def workbook_complete(obj, prev):

IPython/Magic.py

@@ -2693,6 +2693,8 b' Defaulting color scheme to \'NoColor\'"""'
 
           cd -<n>: changes to the n-th directory in the directory history.
 
+          cd -foo: change to directory that matches 'foo' in history
+            
           cd -b <bookmark_name>: jump to a bookmark set by %bookmark
              (note: cd <bookmark_name> is enough if there is no
               directory <bookmark_name>, but a bookmark with the name exists.)
@@ -2712,6 +2714,7 b' Defaulting color scheme to \'NoColor\'"""'
 
         oldcwd = os.getcwd()
         numcd = re.match(r'(-)(\d+)$',parameter_s)
+        wordcd = re.match(r'(-)(\w+)$',parameter_s)
         # jump in directory history by number
         if numcd:
             nn = int(numcd.group(2))
@@ -2722,6 +2725,31 b' Defaulting color scheme to \'NoColor\'"""'
                 return
             else:
                 opts = {}
+        elif wordcd:
+            ps = None
+            fallback = None
+            pat = wordcd.group(2)
+            dh = self.shell.user_ns['_dh']
+            # first search only by basename (last component)
+            for ent in reversed(dh):
+                if pat in os.path.basename(ent):
+                    ps = ent
+                    break
+            
+                if fallback is None and pat in ent:
+                    fallback = ent
+                
+            # if we have no last part match, pick the first full path match
+            if ps is None:
+                ps = fallback
+            
+            if ps is None:
+                print "No matching entry in directory history"
+                return
+            else:
+                opts = {}
+                
+            
         else:
             #turn all non-space-escaping backslashes to slashes, 
             # for c:\windows\directory\names\