Fixes #46: editor command behaviors with the new config.

- Fix the previous default to 'None' (the string 'None', not None)
in the config.
- Adds support for using the $EDITOR when none is defined in the condif.
- Use ui.editor instead of content.editor in the add commnand.

pubs/commands/add_cmd.py

@@ -32,9 +32,7 @@ def bibentry_from_editor(conf, ui, rp):
     bibstr = templates.add_bib
     while again:
         try:
-            bibstr = content.editor_input(conf['main']['edit_cmd'],
+            bibstr = ui.editor_input(initial=bibstr, suffix='.bib')
-                                          bibstr,
-                                          suffix='.bib')
             if bibstr == templates.add_bib:
                 again = ui.input_yn(
                     question='Bibfile not edited. Edit again ?',

pubs/config/spec.py

@@ -20,7 +20,7 @@ open_cmd = string(default=None)
 # if using a graphical editor, use the --wait or --block option, i.e.:
 # "atom --wait"
 # "kate --block"
-edit_cmd = string(default=None)
+edit_cmd = string(default='')
 
 
 [formating]

pubs/uis.py

@@ -1,5 +1,6 @@
 from __future__ import print_function
 
+import os
 import sys
 import locale
 import codecs
@@ -29,6 +30,14 @@ def _get_encoding(conf):
     return conf.get('terminal-encoding', enc or 'utf-8')
 
 
+def _get_local_editor():
+    """Get the editor from environment variables.
+
+    Use vi as a default.
+    """
+    return os.environ.get('EDITOR', 'vi')
+
+
 def get_ui():
     if _ui is None:
         return PrintUI(config.load_default_conf()) # no editor support. (#FIXME?)
@@ -80,7 +89,7 @@ class InputUI(PrintUI):
 
     def __init__(self, conf):
         super(InputUI, self).__init__(conf)
-        self.editor = conf['main']['edit_cmd']
+        self.editor = conf['main']['edit_cmd'] or _get_local_editor()
 
     def input(self):
         try: