* library/tk.tcl: simplified the adding of extra <ISO_Left_Tab>

	and <hpBackTab> events to <<PrevWindow>>.

1 files changed, 7 insertions, 13 deletions

diff --git a/library/tk.tcl b/library/tk.tcl
index cb6e662..f9abc6c 100644
--- a/library/tk.tcl
+++ b/library/tk.tcl
@@ -3,7 +3,7 @@
 # Initialization script normally executed in the interpreter for each
 # Tk-based application.  Arranges class bindings for widgets.
 #
-# RCS: @(#) $Id: tk.tcl,v 1.44 2002/09/09 23:52:02 hobbs Exp $
+# RCS: @(#) $Id: tk.tcl,v 1.45 2002/10/10 16:34:51 hobbs Exp $
 #
 # Copyright (c) 1992-1994 The Regents of the University of California.
 # Copyright (c) 1994-1996 Sun Microsystems, Inc.
@@ -350,18 +350,12 @@ switch [tk windowingsystem] {
 	# that is returned when the user presses <Shift-Tab>.  In order for
 	# tab traversal to work, we have to add these keysyms to the 
 	# PrevWindow event.
-	# The info exists is necessary, because tcl_platform(os) doesn't
-	# exist in safe interpreters.
-	if {[info exists tcl_platform(os)]} {
-	    switch $tcl_platform(os) {
-		"IRIX"  -
-		"Linux" { event add <<PrevWindow>> <ISO_Left_Tab> }
-		"HP-UX" {
-		    # This seems to be correct on *some* HP systems.
-		    catch { event add <<PrevWindow>> <hpBackTab> }
-		}
-	    }
-	}
+	# We use catch just in case the keysym isn't recognized.
+	# This is needed for XFree86 systems
+	catch { event add <<PrevWindow>> <ISO_Left_Tab> }
+	# This seems to be correct on *some* HP systems.
+	catch { event add <<PrevWindow>> <hpBackTab> }
+
 	trace variable ::tk_strictMotif w ::tk::EventMotifBindings
 	set ::tk_strictMotif $::tk_strictMotif
     }