From 8488d2a1e0ba0c1602337ab2aa5b03c0850cac80 Mon Sep 17 00:00:00 2001
From: was <was@ubuntu.localdomain>
Date: Sat, 3 May 2008 14:16:46 -0700
Subject: [PATCH] Trac #3098  -- singular synchronization and garbage
 collection issue.

---
 src/sage/interfaces/singular.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sage/interfaces/singular.py b/src/sage/interfaces/singular.py
index bde1bb27d68..87449fb8794 100644
--- a/src/sage/interfaces/singular.py
+++ b/src/sage/interfaces/singular.py
@@ -451,7 +451,7 @@ def clear(self, var):
         """
         Clear the variable named var.
         """
-        self.eval('if(defined(%s)>0){kill %s;}'%(var,var))
+        self._eval_line('if(defined(%s)>0){kill %s;}'%(var,var), wait_for_prompt=False)
 
     def _create(self, value, type='def'):
         name = self._next_var_name()