[Bug-3288113,3288121]: Missing marks/endless loop in text mark prev/nextpatch_3471873

3 files changed, 85 insertions, 26 deletions

diff --git a/ChangeLog b/ChangeLog
index c6b35ca..8ed5d1a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-??-??  Francois Vogel  <fvogelnew1@free.fr>
+
+	* generic/tkTextMark.c: [Bug-3288113,3288121]: Missing marks/endless 
+	* tests/textMark.test:  loop in text mark prev/next
+
 2012-01-19  Francois Vogel  <fvogelnew1@free.fr>
 
 	* generic/tkText.c: [Bug-3021557]: Moving the cursor in
diff --git a/generic/tkTextMark.c b/generic/tkTextMark.c
index 281baf1..55edb46 100644
--- a/generic/tkTextMark.c
+++ b/generic/tkTextMark.c
@@ -781,11 +781,17 @@ MarkFindNext(
 		    Tcl_SetResult(interp, "current", TCL_STATIC);
 		} else if (segPtr == textPtr->insertMarkPtr) {
 		    Tcl_SetResult(interp, "insert", TCL_STATIC);
-		} else if (segPtr->body.mark.textPtr != textPtr) {
+		} else if (segPtr->body.mark.hPtr == NULL) {
 		    /*
 		     * Ignore widget-specific marks for the other widgets.
-		     */
-
+                     * This is either an insert or a current mark
+                     * (markPtr->body.mark.hPtr actually receives NULL
+                     * for these marks in TkTextSetMark).
+                     * The insert and current marks for textPtr having
+                     * already been tested above, the current segment is
+                     * an insert or current mark from a peer of textPtr,
+                     * which we don't want to return.
+                     */
 		    continue;
 		} else {
 		    Tcl_SetResult(interp,
@@ -868,7 +874,7 @@ MarkFindPrev(
     while (1) {
 	/*
 	 * segPtr points just past the first possible candidate, or at the
-	 * begining of the line.
+	 * beginning of the line.
 	 */
 
 	for (prevPtr = NULL, seg2Ptr = index.linePtr->segPtr;
@@ -876,26 +882,43 @@ MarkFindPrev(
 		seg2Ptr = seg2Ptr->nextPtr) {
 	    if (seg2Ptr->typePtr == &tkTextRightMarkType ||
 		    seg2Ptr->typePtr == &tkTextLeftMarkType) {
+	        if (seg2Ptr->body.mark.hPtr == NULL) {
+                    if (seg2Ptr != textPtr->currentMarkPtr &&
+                            seg2Ptr != textPtr->insertMarkPtr) {
+	                /*
+                         * This is an insert or current mark from a
+                         * peer of textPtr.
+                         */
+                        continue;
+                    }
+	        }
 		prevPtr = seg2Ptr;
 	    }
 	}
 	if (prevPtr != NULL) {
 	    if (prevPtr == textPtr->currentMarkPtr) {
 		Tcl_SetResult(interp, "current", TCL_STATIC);
+	        return TCL_OK;
 	    } else if (prevPtr == textPtr->insertMarkPtr) {
 		Tcl_SetResult(interp, "insert", TCL_STATIC);
-	    } else if (prevPtr->body.mark.textPtr != textPtr) {
+	        return TCL_OK;
+	    } else if (prevPtr->body.mark.hPtr == NULL) {
 		/*
 		 * Ignore widget-specific marks for the other widgets.
-		 */
-
-		continue;
+                 * This is either an insert or a current mark
+                 * (markPtr->body.mark.hPtr actually receives NULL
+                 * for these marks in TkTextSetMark).
+                 * The insert and current marks for textPtr having
+                 * already been tested above, the current segment is
+                 * an insert or current mark from a peer of textPtr,
+                 * which we don't want to return.
+                 */
 	    } else {
 		Tcl_SetResult(interp,
 			Tcl_GetHashKey(&textPtr->sharedTextPtr->markTable,
 			prevPtr->body.mark.hPtr), TCL_STATIC);
+	        return TCL_OK;
 	    }
-	    return TCL_OK;
 	}
 	index.linePtr = TkBTreePreviousLine(textPtr, index.linePtr);
 	if (index.linePtr == NULL) {
diff --git a/tests/textMark.test b/tests/textMark.test
index c2810cc..174f674 100644
--- a/tests/textMark.test
+++ b/tests/textMark.test
@@ -19,7 +19,8 @@ pack append . .t {top expand fill}
 update
 .t debug on
 wm geometry . {}
-  
+.t peer create .pt
+
 # The statements below reset the main window;  it's needed if the window
 # manager is mwm to make mwm forget about a previous minimum size setting.
 
@@ -175,47 +176,77 @@ test textMark-7.8 {MarkFindNext - no next mark} haveCourier12 {
     .t mark set insert 3.0
     .t mark next insert
 } {}
-test textMark-8.1 {MarkFindPrev - invalid mark name} haveCourier12 {
+test textMark-7.9 {MarkFindNext - mark set in a text widget and retrieved from a peer} -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
+    .t mark set mymark 1.0
+    set res [list [.pt mark next 1.0] [.pt mark next mymark] [.pt mark next insert]]
+} -result {mymark insert current}
+
+test textMark-8.1 {MarkFindPrev - invalid mark name} -constraints haveCourier12 -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
     catch {.t mark prev bogus} x
     set x
-} {bad text index "bogus"}
-test textMark-8.2 {MarkFindPrev - marks at same location} haveCourier12 {
+} -result {bad text index "bogus"}
+test textMark-8.2 {MarkFindPrev - marks at same location} -constraints haveCourier12 -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
     .t mark set insert 2.0
     .t mark set current 2.0
     .t mark prev insert
-} {current}
-test textMark-8.3 {MarkFindPrev - numerical starting mark} haveCourier12 {
+} -result {current}
+test textMark-8.3 {MarkFindPrev - numerical starting mark} -constraints haveCourier12 -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
     .t mark set current 1.0
     .t mark set insert 1.0
     .t mark prev 1.1
-} {current}
-test textMark-8.4 {MarkFindPrev - mark on the same line} haveCourier12 {
+} -result {current}
+test textMark-8.4 {MarkFindPrev - mark on the same line} -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
     .t mark set current 1.0
     .t mark set insert 1.1
     .t mark prev insert
-} {current}
-test textMark-8.5 {MarkFindPrev - mark on the previous line} haveCourier12 {
+} -result {current}
+test textMark-8.5 {MarkFindPrev - mark on the previous line} -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
     .t mark set current 1.end
     .t mark set insert 2.0
     .t mark prev insert
-} {current}
-test textMark-8.6 {MarkFindPrev - mark far away} haveCourier12 {
+} -result {current}
+test textMark-8.6 {MarkFindPrev - mark far away} -constraints haveCourier12 -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
     .t mark set current 1.2
     .t mark set insert 7.0
     .t mark prev insert
-} {current}
-test textMark-8.7 {MarkFindPrev - mark on top of end} haveCourier12 {
+} -result {current}
+test textMark-8.7 {MarkFindPrev - mark on top of end} -constraints haveCourier12 -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
     .t mark set insert 3.0
     .t mark set current end
     .t mark prev end
-} {insert}
-test textMark-8.8 {MarkFindPrev - no previous mark} haveCourier12 {
+} -result {insert}
+test textMark-8.8 {MarkFindPrev - no previous mark} -constraints haveCourier12 -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
     .t mark set current 1.0
     .t mark set insert 3.0
     .t mark prev current
-} {}
+} -result {}
+test textMark-8.9 {MarkFindPrev - mark set in a text widget and retrieved from a peer} -setup {
+    .t mark unset {*}[.t mark names]
+} -body {
+    .t mark set mymark 1.0
+    set res [list [.pt mark prev end] [.pt mark prev current] [.pt mark prev insert]]
+} -result {current insert mymark}
 
 catch {destroy .t}
+catch {destroy .pt}
 
 # cleanup
 cleanupTests