From c37aecc13ba3eafdb0a7a3601abc30e8d7518551 Mon Sep 17 00:00:00 2001
From: treectrl <treectrl>
Date: Wed, 6 Dec 2006 03:58:55 +0000
Subject: Add info to the stack trace about which item/column was involved when
 getting sort data failed.

---
 generic/tkTreeItem.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/generic/tkTreeItem.c b/generic/tkTreeItem.c
index 6839347..642b623 100644
--- a/generic/tkTreeItem.c
+++ b/generic/tkTreeItem.c
@@ -5,7 +5,7 @@
  *
  * Copyright (c) 2002-2006 Tim Baker
  *
- * RCS: @(#) $Id: tkTreeItem.c,v 1.96 2006/12/02 21:35:47 treectrl Exp $
+ * RCS: @(#) $Id: tkTreeItem.c,v 1.97 2006/12/06 03:58:55 treectrl Exp $
  */
 
 #include "tkTreeCtrl.h"
@@ -6450,6 +6450,12 @@ ItemSortCmd(
 			&sortItem1->longValue,
 			&sortItem1->doubleValue,
 			&sortItem1->string) != TCL_OK) {
+		char msg[128];
+		sprintf(msg, "\n    (preparing to sort item %s%d column %s%d)",
+			tree->itemPrefix, walk->id,
+			tree->columnPrefix, TreeColumn_GetID(
+			Tree_FindColumn(tree, sortData.columns[i].column)));
+		Tcl_AddErrorInfo(interp, msg);
 		result = TCL_ERROR;
 		goto done;
 	    }
-- 
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