Merge branch 'gforsyth-add_env_completion'

CHANGELOG.rst

@@ -11,6 +11,8 @@ Current Developments
 * Added comma literals to subproc mode.
 * ``@$(cmd)`` has been added as a subprocess-mode operator, which replaces in
   the subprocess command itself with the result of running ``cmd``.
+* The ``${...}`` shortcut for ``__xonsh_env__`` now returns appropriate 
+  completion options
 
 **Changed:**
 

xonsh/completer.py

@@ -19,7 +19,7 @@ from xonsh.tools import (subexpr_from_unbalanced, get_sep,
 
 
 RE_DASHF = re.compile(r'-F\s+(\w+)')
-RE_ATTR = re.compile(r'(\S+(\..+)*)\.(\w*)$')
+RE_ATTR = re.compile(r'([^\s\(\)]+(\.[^\s\(\)]+)*)\.(\w*)$')
 RE_WIN_DRIVE = re.compile(r'^([a-zA-Z]):\\')
 
 
@@ -199,7 +199,7 @@ class Completer(object):
             # python mode explicitly
             return self._python_mode_completions(prefix, ctx,
                                                  prefixlow,
-                                                 startswither)
+                                                 startswither), lprefix
         elif prefix.startswith('-'):
             comps = self._man_completer.option_complete(prefix, cmd)
             return sorted(comps), lprefix
@@ -526,11 +526,11 @@ class Completer(object):
         expr = subexpr_from_unbalanced(expr, '{', '}')
         _ctx = None
         try:
-            val = eval(expr, ctx)
+            val = builtins.__xonsh_execer__.eval(expr, ctx)
             _ctx = ctx
         except:  # pylint:disable=bare-except
             try:
-                val = eval(expr, builtins.__dict__)
+                val = builtins.__xonsh_execer__.eval(expr, builtins.__dict__)
                 _ctx = builtins.__dict__
             except:  # pylint:disable=bare-except
                 return attrs  # anything could have gone wrong!
@@ -539,7 +539,7 @@ class Completer(object):
         opts = []
         for i in _opts:
             try:
-                eval('{0}.{1}'.format(expr, i), _ctx)
+                builtins.__xonsh_execer__.eval('{0}.{1}'.format(expr, i), _ctx)
             except:  # pylint:disable=bare-except
                 continue
             else: