get_term_size: handle temporary stdout overrides

diff --git a/pym/portage/output.py b/pym/portage/output.py
index b813a39837d49cb1946d4237b0356fbbab4e197c..da94377b12314d541acec73ac579738fea30c978 100644 (file)
--- a/pym/portage/output.py
+++ b/pym/portage/output.py
@@ -425,7 +425,7 @@ class StyleWriter(formatter.DumbWriter):
                if self.style_listener:
                        self.style_listener(styles)
 
-def get_term_size(fd=sys.stdout):
+def get_term_size(fd=None):
        """
        Get the number of lines and columns of the tty that is connected to
        fd.  Returns a tuple of (lines, columns) or (0, 0) if an error
@@ -434,6 +434,8 @@ def get_term_size(fd=sys.stdout):
        greater than or equal to zero, since a negative COLUMNS variable is
        known to prevent some commands from working (see bug #394091).
        """
+       if fd is None:
+               fd = sys.stdout
        if not hasattr(fd, 'isatty') or not fd.isatty():
                return (0, 0)
        try: