wxGUI/vdigit: fix 'copy features' tool

	      (merge from develbranch_6, https://trac.osgeo.org/grass/changeset/35906)


git-svn-id: https://svn.osgeo.org/grass/grass/trunk@35907 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_modules/mapdisp_window.py

@@ -27,6 +27,8 @@ import wx
 import dbm
 import gdialogs
 import gcmd
+import utils
+import globalvar
 from debug import Debug
 from preferences import globalSettings as UserSettings
 from vdigit import GV_LINES as VDigit_Lines_Type

gui/wxpython/gui_modules/vdigit.py

@@ -190,13 +190,14 @@ class AbstractDigit:
         ret = gcmd.RunCommand('v.edit',
                               parent = self,
                               quiet = True,
+                              read = True,
                               map = bgmap,
                               tool = 'select',
                               bbox= '%f,%f,%f,%f' % (pos1[0], pos1[1], pos2[0], pos2[1]))
                               
         if not ret:
-            return ids
-
+            return []
+        
         output = ret.splitlines()[0] # first line
         ids = output.split(',') 
         ids = map(int, ids) # str -> int