Allow an empty PROMPT_COMMAND for bug #152157.

svn path=/main/trunk/; revision=4771

diff --git a/pym/output.py b/pym/output.py
index 63f24fc227f2a29b326900cf419afd88daa23196..ff40325b09d2437e1b18388d7d689c72f381c967 100644 (file)
--- a/pym/output.py
+++ b/pym/output.py
@@ -189,7 +189,9 @@ def xtermTitleReset():
        global default_xterm_title
        if default_xterm_title is None:
                prompt_command = os.getenv('PROMPT_COMMAND')
-               if prompt_command is not None:
+               if prompt_command == "":
+                       default_xterm_title = ""
+               elif prompt_command is not None:
                        default_xterm_title = commands.getoutput(prompt_command)
                else:
                        pwd = os.getenv('PWD','')