Prevent IllegalStateException setting visible region with collapsed projection region #3456

danthe1st · 2025-10-26T10:15:23Z

When collapsing projection regions and then setting the visible region in a certain way and then changing it to the surrounding visible region, it is possible that consecutive ProjectionMapping#toImageLine calls throw an IllegalStateException. This is because ProjectionDocument#internalRemoveMasterDocumentRange adds a Position to the document when a Position with the same offset but a length of 0 can be present already. In this case, ISynchronizableDocument#addPosition (which is supposed to insert it into the sorted array) might insert it before the Position resulting in the fragments being sorted incorrectly (the 0-length fragment after the positive-length fragment with both having the same offset). This can then result in IllegalStateExceptions when calling ProjectionMapping#toImageLine (which happens while drawing line numbers for example).

A similar issue also happens in ProjectionDocument#internalAddMasterDocumentRange. There, it is possible that a region is expanded to the right in a way that it fully surrounds the region on the right. While expansion is normally handled by Segments (ranges in the slave document), the Fragments are not correctly reordered in this case causing computeProjectedMasterRegions(int offsetInMaster, int lengthInMaster) not finding the region (at least that's what happened with my reproducer) and hence not being able to remove it from the editor. In the situation where one Fragment includes (is a "superset" of) another, it should be safe to delete the smaller one fixing the invalid state.

This change fixes these problems.

Standalone reproducer/test

To reproduce the issue, run the test added with this PR without the changes to ProjectionDocument.
Without the fix, the tests throw exceptions similar to the following:

java.lang.IllegalStateException: startLine (6) does not match endLine (12)
	at org.eclipse.jface.text.projection.ProjectionMapping.toImageLine(ProjectionMapping.java:482)
	at org.eclipse.jface.text.tests.ProjectionViewerTest.testImageLineStateAfterSettingVisibleRegionsWithProjectionsSetMethodAndClass(ProjectionViewerTest.java:483)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)

and

org.opentest4j.AssertionFailedError: expected: <-1> but was: <8>
	at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
	at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)
	at org.junit.jupiter.api.AssertEquals.failNotEqual(AssertEquals.java:197)
	at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:150)
	at org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:145)
	at org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:531)
	at org.eclipse.jface.text.tests.ProjectionViewerTest.testImageLineStateAfterSettingVisibleRegionsWithProjectionsSetDifferentMethods(ProjectionViewerTest.java:543)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)

Reproducing with JDT (patch)

This can be reproduced with JDT using the code from this PR I wrote following these steps:

Enable Window > Preferences > Java > Editor > Only show the selected Java element and folding in Window > Preferences > Java > Editor > Folding
Create the following class:

package test;

public class TM {
	void a() {
		
	}
	
	void b() {
		
	}
	
	void c() {
		
	}
}

Collapse the b() method
Select a() in the outline (does not happen with the other methods) to only show that method
Select the TM class in the outline
The following exception occurs and line numbers break:

!ENTRY org.eclipse.ui 4 0 2025-10-26 11:10:59.431
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.IllegalStateException: startLine (6) does not match endLine (12)
	at org.eclipse.jface.text.projection.ProjectionMapping.toImageLine(ProjectionMapping.java:482)
	at org.eclipse.jface.text.TextViewer.modelLine2WidgetLine(TextViewer.java:5397)
	at org.eclipse.jface.text.JFaceTextUtil.modelLineToWidgetLine(JFaceTextUtil.java:254)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.doPaint(LineNumberRulerColumn.java:728)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.doubleBufferPaint(LineNumberRulerColumn.java:703)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.lambda$2(LineNumberRulerColumn.java:616)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:268)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5889)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1656)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1682)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1665)
	at org.eclipse.swt.widgets.Control.gtk_draw(Control.java:3902)
	at org.eclipse.swt.widgets.Scrollable.gtk_draw(Scrollable.java:394)
	at org.eclipse.swt.widgets.Composite.gtk_draw(Composite.java:507)
	at org.eclipse.swt.widgets.Canvas.gtk_draw(Canvas.java:173)
	at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2614)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:6868)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:6196)
	at org.eclipse.swt.internal.gtk3.GTK3.gtk_main_do_event(Native Method)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1624)
	at org.eclipse.swt.internal.gtk3.GTK3.gtk_main_iteration_do(Native Method)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4542)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1147)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1038)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:677)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:583)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:185)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:219)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:615)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:563)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1415)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1387)

!ENTRY org.eclipse.ui 4 0 2025-10-26 11:11:02.394
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.IllegalStateException: startLine (6) does not match endLine (12)
	at org.eclipse.jface.text.projection.ProjectionMapping.toImageLine(ProjectionMapping.java:482)
	at org.eclipse.jface.text.TextViewer.modelLine2WidgetLine(TextViewer.java:5397)
	at org.eclipse.jface.text.JFaceTextUtil.modelLineToWidgetLine(JFaceTextUtil.java:254)
	at org.eclipse.jface.internal.text.source.DiffPainter.paintLine(DiffPainter.java:220)
	at org.eclipse.jface.internal.text.source.DiffPainter.paint(DiffPainter.java:160)
	at org.eclipse.jface.text.source.LineNumberChangeRulerColumn.doPaint(LineNumberChangeRulerColumn.java:181)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.lambda$6(LineNumberRulerColumn.java:712)
	at org.eclipse.swt.graphics.Image.drawWithImageGcDrawer(Image.java:1179)
	at org.eclipse.swt.graphics.Image.<init>(Image.java:705)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.newFullBufferImage(LineNumberRulerColumn.java:714)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.doubleBufferPaint(LineNumberRulerColumn.java:701)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.lambda$2(LineNumberRulerColumn.java:616)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:268)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5889)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1656)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1682)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1665)
	at org.eclipse.swt.widgets.Control.gtk_draw(Control.java:3902)
	at org.eclipse.swt.widgets.Scrollable.gtk_draw(Scrollable.java:394)
	at org.eclipse.swt.widgets.Composite.gtk_draw(Composite.java:507)
	at org.eclipse.swt.widgets.Canvas.gtk_draw(Canvas.java:173)
	at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2614)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:6868)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:6196)
	at org.eclipse.swt.internal.gtk3.GTK3.gtk_main_do_event(Native Method)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1624)
	at org.eclipse.swt.internal.gtk3.GTK3.gtk_main_iteration_do(Native Method)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4542)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1147)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1038)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:677)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:583)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:185)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:219)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:615)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:563)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1415)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1387)

!ENTRY org.eclipse.ui 4 0 2025-10-26 11:11:04.136
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.IllegalStateException: startLine (6) does not match endLine (12)
	at org.eclipse.jface.text.projection.ProjectionMapping.toImageLine(ProjectionMapping.java:482)
	at org.eclipse.jface.text.TextViewer.modelLine2WidgetLine(TextViewer.java:5397)
	at org.eclipse.jface.text.JFaceTextUtil.modelLineToWidgetLine(JFaceTextUtil.java:254)
	at org.eclipse.jface.internal.text.source.DiffPainter.paintLine(DiffPainter.java:220)
	at org.eclipse.jface.internal.text.source.DiffPainter.paint(DiffPainter.java:160)
	at org.eclipse.jface.text.source.LineNumberChangeRulerColumn.doPaint(LineNumberChangeRulerColumn.java:181)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.lambda$6(LineNumberRulerColumn.java:712)
	at org.eclipse.swt.graphics.Image.drawWithImageGcDrawer(Image.java:1179)
	at org.eclipse.swt.graphics.Image.<init>(Image.java:705)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.newFullBufferImage(LineNumberRulerColumn.java:714)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.doubleBufferPaint(LineNumberRulerColumn.java:701)
	at org.eclipse.jface.text.source.LineNumberRulerColumn.lambda$2(LineNumberRulerColumn.java:616)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:268)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5889)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1656)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1682)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1665)
	at org.eclipse.swt.widgets.Control.gtk_draw(Control.java:3902)
	at org.eclipse.swt.widgets.Scrollable.gtk_draw(Scrollable.java:394)
	at org.eclipse.swt.widgets.Composite.gtk_draw(Composite.java:507)
	at org.eclipse.swt.widgets.Canvas.gtk_draw(Canvas.java:173)
	at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2614)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:6868)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:6196)
	at org.eclipse.swt.internal.gtk3.GTK3.gtk_main_do_event(Native Method)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1624)
	at org.eclipse.swt.internal.gtk3.GTK3.gtk_main_iteration_do(Native Method)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4542)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1147)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1038)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:677)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:583)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:185)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:219)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:615)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:563)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1415)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1387)

If you don't select the TM class in the outline but instead the b() method, the c() method will be shown incorrectly.

github-actions · 2025-10-26T11:30:15Z

Test Results

3 015 files ±0 3 015 suites ±0 2h 15m 21s ⏱️ + 11m 23s
8 264 tests +2 8 016 ✅ +2 248 💤 ±0 0 ❌ ±0
23 616 runs +6 22 825 ✅ +6 791 💤 ±0 0 ❌ ±0

Results for commit 3fb1d5f. ± Comparison against base commit 60ee73f.

♻️ This comment has been updated with latest results.

danthe1st · 2025-10-26T13:06:14Z

Test failures might be #2708 (comment) and #1517

danthe1st · 2025-10-27T17:50:09Z

Even with the fix, it seems there is still an issue with the JDT syntax highlighting breaking. As I don't know what causes this issue/#3455, I am marking this PR as a draft for now.

This is actually (at least partially) fixed by #3457 (not sure why and it wasn't intentional but if it works, it works). However, it is still a bit weird in my tests so I'm keeping it as a draft.

eclipse-platform-bot · 2025-12-15T10:52:07Z

This pull request changes some projects for the first time in this development cycle.
Therefore the following files need a version increment:

bundles/org.eclipse.text/META-INF/MANIFEST.MF

An additional commit containing all the necessary changes was pushed to the top of this PR's branch. To obtain these changes (for example if you want to push more changes) either fetch from your fork or apply the git patch.

Git patch

From 29390642701bfc3eb94af3bb33989c4937d500d6 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <platform-bot@eclipse.org>
Date: Mon, 5 Jan 2026 11:19:02 +0000
Subject: [PATCH] Version bump(s) for 4.39 stream


diff --git a/bundles/org.eclipse.text/META-INF/MANIFEST.MF b/bundles/org.eclipse.text/META-INF/MANIFEST.MF
index a247d39b79..516af6ca8a 100644
--- a/bundles/org.eclipse.text/META-INF/MANIFEST.MF
+++ b/bundles/org.eclipse.text/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.text
-Bundle-Version: 3.14.500.qualifier
+Bundle-Version: 3.14.600.qualifier
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
 Export-Package: 
-- 
2.52.0

Further information are available in Common Build Issues - Missing version increments.

danthe1st · 2025-12-15T12:27:03Z

@iloveeclipse Would you or someone else like to review this and #3585?

vogella · 2026-01-12T09:20:52Z

The Pull Request PR #3456 (#3456) ("Prevent IllegalStateException setting visible region with collapsed projection region") appears to be a
high-quality and necessary fix.

Analysis

Problem Identification: The PR addresses a clear race condition/state issue where ProjectionMapping throws an IllegalStateException due to incorrectly sorted Position objects (specifically involving
0-length positions) when modifying visible regions.
Implementation:
- ProjectionDocument.java:
  - The logic to explicitly handle and remove conflicting 0-length positions in internalRemoveMasterDocumentRange prevents the sorting ambiguity that caused the crash.
  - The helper method removePositionAt correctly identifies the existing position instance in the document (by offset and length) before removing it, which is crucial since IDocument.removePosition
    requires the specific instance.
  - The handling of "superset" regions in internalAddMasterDocumentRange by deleting the encompassed segment correctly maintains the integrity of the projection mapping.
Testing:
- The PR includes robust regression tests in ProjectionViewerTest.java that reproduce the specific crash scenarios (IllegalStateException and incorrect mapping).
- The tests verify both the absence of the exception and the correctness of the toImageLine mapping after the complex operations.
Conventions: Code style and copyright updates adhere to project standards.

Conclusion

Opinion: The PR is ready for merging. It fixes a critical stability issue in the text editor framework and includes excellent test coverage to prevent regression. The solution logic is sound and safe.

vogella · 2026-01-12T12:00:09Z

@danthe1st I would think the test failure is unrelated. What do you think?

vogella · 2026-01-12T12:05:12Z

I try to stabilize the test with #3664

projection region

danthe1st · 2026-01-12T15:47:07Z

@danthe1st I would think the test failure is unrelated. What do you think?

It seems you fixed it in #3664 and the tests pass now so I also think it's unrelated, especially given:

The test failure is Windows-only
FindReplaceDialogTest doesn't seem to be logically related to this PR

vogella · 2026-01-12T18:06:15Z

Thanks @danthe1st

danthe1st force-pushed the projection-visible-region-imageLine-exception branch from 8067f5c to 883f03e Compare October 26, 2025 10:25

danthe1st marked this pull request as ready for review October 27, 2025 17:51

danthe1st marked this pull request as draft October 27, 2025 18:00

iloveeclipse force-pushed the projection-visible-region-imageLine-exception branch from 883f03e to dde2668 Compare October 30, 2025 21:13

danthe1st force-pushed the projection-visible-region-imageLine-exception branch 2 times, most recently from 5041a5d to 17cd4dd Compare November 1, 2025 11:27

danthe1st marked this pull request as ready for review November 1, 2025 12:19

danthe1st force-pushed the projection-visible-region-imageLine-exception branch 2 times, most recently from 1b4b381 to c8b2d47 Compare November 1, 2025 12:23

danthe1st mentioned this pull request Dec 10, 2025

Allow using visible regions with projections #3074

Merged

danthe1st force-pushed the projection-visible-region-imageLine-exception branch from c8b2d47 to ae256ad Compare December 15, 2025 10:45

danthe1st force-pushed the projection-visible-region-imageLine-exception branch 2 times, most recently from 6b907a8 to bc02784 Compare December 15, 2025 12:22

This was referenced Dec 15, 2025

enable folding with "Only show selected Java element" eclipse-jdt/eclipse.jdt.ui#2302

Merged

Eclipse new folding feature does not work when use show only selected element feature eclipse-jdt/eclipse.jdt.ui#2264

Closed

danthe1st force-pushed the projection-visible-region-imageLine-exception branch from 3cee614 to 2526c85 Compare December 18, 2025 16:13

This was referenced Dec 18, 2025

Add N&N for folding with only showing selected elements eclipse-platform/www.eclipse.org-eclipse#460

Merged

Ensure the last line is included in projection-based visible regions #3585

Merged

danthe1st force-pushed the projection-visible-region-imageLine-exception branch 2 times, most recently from 964b669 to 6b4b48b Compare January 5, 2026 11:14

vogella force-pushed the projection-visible-region-imageLine-exception branch from ee9810f to ee40348 Compare January 12, 2026 09:06

vogella force-pushed the projection-visible-region-imageLine-exception branch from ee40348 to ea857b1 Compare January 12, 2026 11:02

danthe1st and others added 2 commits January 12, 2026 14:53

Prevent IllegalStateException setting visible region with collapsed

5daecc5

projection region

Version bump(s) for 4.39 stream

3fb1d5f

vogella force-pushed the projection-visible-region-imageLine-exception branch from ea857b1 to 3fb1d5f Compare January 12, 2026 13:53

vogella mentioned this pull request Jan 12, 2026

Migrate TestProjectionViewer and the other tests in this plug-in to Junit5 #3665

Open

vogella merged commit 8a64d23 into eclipse-platform:master Jan 12, 2026
18 checks passed

danthe1st deleted the projection-visible-region-imageLine-exception branch January 12, 2026 18:09

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Prevent IllegalStateException setting visible region with collapsed projection region #3456

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danthe1st commented Oct 26, 2025 •

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