fix(rcommand): can't use action with multiple args to edit file (#79)

doc/rnvimr.txt

@@ -161,9 +161,9 @@ g:rnvimr_action
 <
     |NvimEdit| : Use Neovim's command to edit the selected file in Ranger.
     'edit', 'split', 'vsplit', 'drop' and 'tabedit' is actions of Neovim.
-    `NvimEdit split True/False`: will override |g:rnvimr_enable_picker| variable
-    to split the file, 'edit', 'vsplit', 'drop' and 'tabedit' is similar to
-    'split'.
+    `NvimEdit split true/false`: if the last argument of the action is 'true'
+    or 'false' that will override |g:rnvimr_enable_picker| variable to split
+    the file, 'edit', 'vsplit', 'drop' and 'tabedit' is similar to 'split'.
 
     |JumpNvimCwd| : Change Ranger's cwd to Neovim's.
     |EmitRangerCwd| : Change Neovim's cwd to Ranger's.

ranger/plugins/rcommand.py

@@ -15,11 +15,12 @@ class NvimEdit(Command):
     """
 
     def execute(self):
-        action = self.args[1]
-        try:
-            picker_enabled = self.args[2].lower() == 'true'
-        except IndexError:
+        last_arg = self.args[-1]
+        if last_arg.lower() in ('true', 'false'):
+            picker_enabled = self.args.pop().lower() == 'true'
+        else:
             picker_enabled = None
+        action = ' '.join(self.args[1:])
 
         if not self.fm.thisfile.is_file or not action:
             return