grepid: omit stack dump on ctrl+c

grepid

@@ -59,6 +59,7 @@ def main(argv):
     if len(argv) == 3:
         where = argv[2]
 
+    try:
         process = Popen(['grep', '--exclude-dir=.svn', '--exclude-dir=.git',
             '--color=never', '-HIRn', '\<%s\>' % ident, where], stdout=PIPE)
 
@@ -87,6 +88,8 @@ def main(argv):
             lines.append((line_no, content))
         if len(lines) > 0:
             display_lines(lines, ident)
+    except KeyboardInterrupt:
+        pass
     return 0
 
 if __name__ == '__main__':