Improve Pasting in Expression's View

[SougandhS]

Previously, when pasting multiple expressions in the Expressions View, Eclipse would combine all lines into a single expression. This made it tedious for users who wanted to copy and paste multiple expressions at once, such as when importing or exporting between workspaces, forcing them to paste each expression individually. Additionally, pasting often required keyboard shortcuts, which could be inconvenient for new users.

With this change, a context menu entry has been added for the Paste action

and when pasting multi-line expressions, Eclipse now prompts the user to choose how the clipboard content should be added.

Users can select either Single Expression, which combines all lines into one expression (default behaviour) or Multiple Expressions, which creates individual expressions for each line.

The preferred default behavior can be set directly in the prompt dialog, and users can later update this preference via Preferences → Run/Debug → Expressions Paste Behavior.

Current

CurrentBehav.mp4

New

AfterIm.mp4

This improvement simplifies copy/paste of multiple expressions, streamlines import/export workflows for Expressions View, and makes the pasting more user-friendly and discoverable.

Export/Import

Import.Export.mp4

[eclipse-platform-bot]

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

debug/org.eclipse.debug.ui/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 61af7fbe6a16860f4c3249a40323b2b69863f705 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <platform-bot@eclipse.org>
Date: Wed, 3 Dec 2025 09:04:35 +0000
Subject: [PATCH] Version bump(s) for 4.39 stream


diff --git a/debug/org.eclipse.debug.ui/META-INF/MANIFEST.MF b/debug/org.eclipse.debug.ui/META-INF/MANIFEST.MF
index 860867d420..db51858366 100644
--- a/debug/org.eclipse.debug.ui/META-INF/MANIFEST.MF
+++ b/debug/org.eclipse.debug.ui/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.debug.ui; singleton:=true
-Bundle-Version: 3.19.100.qualifier
+Bundle-Version: 3.19.200.qualifier
 Bundle-Activator: org.eclipse.debug.internal.ui.DebugUIPlugin
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
-- 
2.51.2

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

[github-actions]

Test Results

 1 977 files  + 4   1 977 suites  +4   1h 30m 19s ⏱️ - 5m 0s
 4 743 tests ± 0   4 719 ✅ ± 0   24 💤 ±0  0 ❌ ±0 
14 229 runs  +10  14 047 ✅ +10  182 💤 ±0  0 ❌ ±0 

Results for commit 6d5d395. ± Comparison against base commit 85447df.

♻️ This comment has been updated with latest results.

[rdin777]

"It appears this workspace corruption is linked to the metadata migration logic in the new 2025-09 build.

To narrow this down, could the reporter try:

Running Eclipse with the -clean flag to force a plugin registry refresh.

Checking the .metadata/.log file specifically for BundleException or unresolved constraint errors.

If the issue persists, it might be a regression in how the ResourcesPlugin handles legacy workspace preferences from the 4.33 (2025-03) version. Given the missing features reported in #2298, it's possible that some mandatory UI dependencies are simply not being satisfied during the workspace initialization phase."

[SougandhS]

Hi @iloveeclipse, could you please check this PR ?