[Copilot]

Method parameter mismatch hover errors are displayed as flat text (e.g., "The method foo(TypeA, TypeB) is not applicable for the arguments (TypeC, TypeD)"), which becomes nearly unreadable when many parameters are involved.

Changes

• org.eclipse.text — HTMLBuilder: Added 6 new instance methods for HTML table generation:

  • startTable / endTable — <table> wrapper
  • startTableRow / endTableRow — <tr> wrapper
  • addTableHeaderCell — <th>content</th>
  • addTableCell — <td>content</td>

• org.eclipse.jface.text — HTMLPrinter: Added corresponding static facade methods delegating to the CORE HTMLBuilder instance, consistent with the existing delegation pattern.

Usage example

StringBuilder buffer = new StringBuilder();
HTMLPrinter.startTable(buffer);
HTMLPrinter.startTableRow(buffer);
HTMLPrinter.addTableHeaderCell(buffer, "#");
HTMLPrinter.addTableHeaderCell(buffer, "Expected");
HTMLPrinter.addTableHeaderCell(buffer, "Provided");
HTMLPrinter.endTableRow(buffer);
// ... add data rows ...
HTMLPrinter.endTable(buffer);

This enables downstream clients (e.g., JDT hover implementations) to render parameter mismatch data in a structured table rather than a flat string.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• repo.eclipse.org
  • Triggering command: /opt/hostedtoolcache/Java_Temurin-Hotspot_jdk/21.0.10-7/x64/bin/java /opt/hostedtoolcache/Java_Temurin-Hotspot_jdk/21.0.10-7/x64/bin/java --enable-native-access=ALL-UNNAMED -classpath /opt/hostedtoolcache/maven/3.9.12/x64/boot/plexus-classworlds-2.9.0.jar -Dclassworlds.conf=/opt/hostedtoolcache/maven/3.9.12/x64/bin/m2.conf -Dmaven.home=/opt/hostedtoolcache/maven/3.9.12/x64 -Dlibrary.jansi.path=/opt/hostedtoolcache/maven/3.9.12/x64/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/eclipse.platform.ui/eclipse.platform.ui org.codehaus.plexus.classworlds.launcher.Launcher clean compile -pl :org.eclipse.text -Pbuild-individual-bundles -q org.eclipse.ui.t/home/REDACTED/work/eclipse.platform.ui/eclipse.platform.ui/bundles/org.eclipse.uigit status --porcelain --ignore-submodules | head -n 10 org.eclipse.ui.txargs va ava org.eclipse.ui.tHTMLBuilder\|HTMLPrinter (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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