depgraph: don't output \b to non-tty

This will fix bug #357093.

diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py
index a755116ce3879619f1a65dc2c84af2f00a88309a..f17a93ccbd0045a407a1b4e02e2120dab7a490af 100644 (file)
--- a/pym/_emerge/depgraph.py
+++ b/pym/_emerge/depgraph.py
@@ -5772,10 +5772,15 @@ def _spinner_start(spinner, myopts):
 
 def _spinner_stop(spinner):
        if spinner is None or \
-               spinner.update is spinner.update_quiet:
+               spinner.update == spinner.update_quiet:
                return
 
-       portage.writemsg_stdout("\b\b... done!\n")
+       if spinner.update != spinner.update_basic:
+               # update_basic is used for non-tty output,
+               # so don't output backspaces in that case.
+               portage.writemsg_stdout("\b\b")
+
+       portage.writemsg_stdout("... done!\n")
 
 def backtrack_depgraph(settings, trees, myopts, myparams, 
        myaction, myfiles, spinner):