Currently only uncommitted changes are shown. This changes the behavior to show all committed and uncommitted changes from the branch point when on a feature branch, while maintaining the existing behavior (uncommitted only) on the default branch.

Implementation

• Branch detection: Check for main then master to identify default branch
• Feature branches: Use git diff <default>...HEAD to show all changes since branching
• Default branch: Continue using git diff HEAD to show only uncommitted changes
• Untracked files: Included in both cases

Example

On feature branch feature-1:

diff --git a/./feature-file-1.txt b/./feature-file-1.txt  # committed change
+Committed change 1
diff --git a/./uncommitted.txt b/./uncommitted.txt      # uncommitted change
+Uncommitted change

On master branch:

diff --git a/./uncommitted.txt b/./uncommitted.txt      # only uncommitted
+Uncommitted change
# committed changes not shown

Tests Added

• TestServeDiffsText_FeatureBranchShowsAllChanges: Verifies committed + uncommitted changes shown on feature branches
• TestServeDiffsText_MasterBranchShowsOnlyUncommitted: Verifies only uncommitted changes shown on default branch

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.