From 187b9edc66c053cde292a0bd1ff92969d799b42a 2012-12-03 06:44:04
From: Robert McGibbon <rmcgibbo@gmail.com>
Date: 2012-12-03 06:44:04
Subject: [PATCH] Fixed quarentine/ipy_editor.py so that it (0) uses string formatting instead of some old old 'itpl' module (1) doesn't use the deprecated ipyapi, (2) fully pep8 compliant, (3) better docstring

---

diff --git a/IPython/quarantine/ipy_editors.py b/IPython/quarantine/ipy_editors.py
index 59075af..f21325b 100644
--- a/IPython/quarantine/ipy_editors.py
+++ b/IPython/quarantine/ipy_editors.py
@@ -5,87 +5,111 @@ They should honor the line number argument, at least.
 Contributions are *very* welcome.
 """
 
-from IPython.core import ipapi
 from IPython.core.error import TryNext
-ip = ipapi.get()
-
-# We no longer bundle Itpl. If you update this module, you should use advanced
-# string formatting instead.
-from IPython.external.Itpl import itplns
+from string import Template
 import os
 
-def install_editor(run_template, wait = False):
-    """ Gets a template in format "myeditor bah bah $file bah bah $line"
-    
-    $file will be replaced by file name, $line by line number (or 0).
-    Installs the editor that is called by IPython, instead of the default
-    notepad or vi.
-    
-    If wait is true, wait until the user presses enter before returning,
-    to facilitate non-blocking editors that exit immediately after
-    the call.
+
+def install_editor(run_template, wait=False):
+    """Installs the editor that is called by IPython for the %edit magic.
+
+    This overrides the default editor, which is generally set by your EDITOR
+    environment variable or is notepad (windows) or vi (linux). By supplying a
+    template string `run_template`, you can control how the editor is invoked
+    by IPython -- (e.g. the format in which it accepts command line options)
+
+    Parameters
+    ----------
+    run_template : basestring
+        run_template acts as a template for how your editor is invoked by
+        the shell. It should contain '$file', which will be replaced on
+        invokation with the file name, and '$line$', $line by line number
+        (or 0) to invoke the file with.
+    wait : bool
+        If `wait` is true, wait until the user presses enter before returning,
+        to facilitate non-blocking editors that exit immediately after
+        the call.
     """
-    
+
+    for substitution in ['$file', '$line']:
+        if not substitution in run_template:
+            raise ValueError(('run_template should contain %s'
+            ' for string substitution. You supplied "%s"' % (substitution,
+                run_template)))
+
+    template = Template(run_template)
+
     def call_editor(self, file, line=0):
         if line is None:
             line = 0
-        cmd = itplns(run_template, locals())
-        print ">",cmd
+        cmd = template.substitute(file=file, line=line)
+        print ">", cmd
         if os.system(cmd) != 0:
             raise TryNext()
         if wait:
             raw_input("Press Enter when done editing:")
 
-    ip.set_hook('editor',call_editor)
+    get_ipython().set_hook('editor', call_editor)
 
 
 # in these, exe is always the path/name of the executable. Useful
 # if you don't have the editor directory in your path
 
-def komodo(exe = 'komodo'):
+
+def komodo(exe='komodo'):
     """ Activestate Komodo [Edit] """
-    install_editor(exe + ' -l $line "$file"', wait = True)
+    install_editor(exe + ' -l $line "$file"', wait=True)
+
 
-def scite(exe = "scite"):
+def scite(exe="scite"):
     """ SciTE or Sc1 """
     install_editor(exe + ' "$file" -goto:$line')
 
-def notepadplusplus(exe = 'notepad++'):
+
+def notepadplusplus(exe='notepad++'):
     """ Notepad++ http://notepad-plus.sourceforge.net """
     install_editor(exe + ' -n$line "$file"')
-    
-def jed(exe = 'jed'):
+
+
+def jed(exe='jed'):
     """ JED, the lightweight emacsish editor """
     install_editor(exe + ' +$line "$file"')
 
-def idle(exe = None):
+
+def idle(exe=None):
     """ Idle, the editor bundled with python
-    
+
     Should be pretty smart about finding the executable.
     """
     if exe is None:
         import idlelib
         p = os.path.dirname(idlelib.__file__)
-        exe = p + '/idle.py'
+        exe = os.path.join(p, 'idle.py')
     install_editor(exe + ' "$file"')
 
-def mate(exe = 'mate'):
+
+def mate(exe='mate'):
     """ TextMate, the missing editor"""
+    # wait=True is not required since we're using the -w flag to mate
     install_editor(exe + ' -w -l $line "$file"')
 
+
+# ##########################################
 # these are untested, report any problems
+# ##########################################
+
 
-def emacs(exe = 'emacs'):
+def emacs(exe='emacs'):
     install_editor(exe + ' +$line "$file"')
 
-def gnuclient(exe= 'gnuclient'):
+
+def gnuclient(exe='gnuclient'):
     install_editor(exe + ' -nw +$line "$file"')
 
-def crimson_editor(exe = 'cedt.exe'):
+
+def crimson_editor(exe='cedt.exe'):
     install_editor(exe + ' /L:$line "$file"')
-    
-def kate(exe = 'kate'):
+
+
+def kate(exe='kate'):
     install_editor(exe + ' -u -l $line "$file"')
-    
-   
-