3 files changed, 10 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index 42ee34d..e1c49f4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-06-10  Don Porter  <dgp@users.sourceforge.net>
+
+	* generic/tkCanvLine.c: [Bug 3175610] Incomplete refresh of line item.
+	Backport of 2011-03-03 trunk commit from Alexandre Ferrieux.
+
 2011-06-08  Don Porter  <dgp@users.sourceforge.net>
 
 	* changes:	Updated for 8.5.10 release.
diff --git a/changes b/changes
index be1f61d..f2cdfba 100644
--- a/changes
+++ b/changes
@@ -6764,4 +6764,6 @@ and -to (porter)
 
 2011-06-07 (bug fix)[2484771] modal dialog settings (hoff, thoyts)
 
+2011-06-10 (bug fix)[3175610] incomplete line item refresh (ferrieux)
+
 --- Released 8.5.10, June 17, 2011 --- See ChangeLog for details ---
diff --git a/generic/tkCanvLine.c b/generic/tkCanvLine.c
index 41a3d25..cce3460 100644
--- a/generic/tkCanvLine.c
+++ b/generic/tkCanvLine.c
@@ -1005,10 +1005,11 @@ LineInsert(
 	newCoordPtr[i+objc] = linePtr->coordPtr[i];
     }
     if (linePtr->coordPtr) {
-	ckfree((char *)linePtr->coordPtr);
+	ckfree((char *) linePtr->coordPtr);
     }
     linePtr->coordPtr = newCoordPtr;
-    linePtr->numPoints = (length + objc)/2;
+    length += objc;
+    linePtr->numPoints = length / 2;
 
     if ((length>3) && (state != TK_STATE_HIDDEN)) {
 	/*