handle the null (initial) object state correctly, using [info exists ...]

svn path=/trunk/externals/tclfile/; revision=15719

1 files changed, 1 insertions, 1 deletions

diff --git a/exists.tcl b/exists.tcl
index 66fa71c..3ae3c58 100644
--- a/exists.tcl
+++ b/exists.tcl
@@ -16,7 +16,7 @@ proc+ exists::0_symbol {self args} {
 }
 
 proc+ exists::0_bang {self} {
-    if {$@filename == {}} return
+    if {![info exists @filename]} return
     pd::outlet $self 0 float [file exists $@filename]
 }