Quick Open: match queries with leading workspace folder name

[yogeshwaran-c]

Fixes #208840

What this PR does

In a multi-root workspace (or any workspace whose folder display name / basename appears in the path the user pastes), typing a fully-qualified relative path such as workspace_1/test_file.txt or Source/main.py returns no results from Quick Open's file picker.

The relative-path resolver in AnythingQuickAccessProvider.getRelativePathFileResults resolves each query against every workspace folder via folder.toResource(query.original), which produces <folderUri>/workspace_1/test_file.txt — a path that does not exist when the workspace folder itself is workspace_1.

This PR adds a second resolution attempt that strips a leading path segment when it matches the workspace folder's name or the basename of its URI (case-insensitively). For example:

• Multi-root workspace with workspace_1, workspace_2. User types workspace_1/test_file.txt → file is now found.
• Workspace folder { "name": "Source", "path": "code" }. User types Source/main.py or code/main.py → file is now found.

The original behavior (using query.original as-is) is preserved, so single-root relative queries that already work continue to work. Results are de-duplicated via a ResourceMap so a file matched by both the original and the stripped query is returned only once.

Stripping only fires when the first segment is an exact, case-insensitive match to the folder's name or basename — workspace_12/x.ts against folder workspace_1 does not strip. Empty remainders (e.g. workspace_1/) are ignored to avoid matching the folder itself.

Implementation

• getRelativePathFileResults now uses a ResourceMap instead of a URI[] to handle the dedup.
• A new private helper tryAddRelativePathFileResult factors out the stat + casing-resolution step so it can be reused for both the as-typed and prefix-stripped queries.
• A new exported pure helper stripWorkspaceFolderPrefix(query, folder) performs the prefix check. It is exported so it can be unit-tested without the full Quick Access scaffolding.

Testing

• Added focused unit tests in src/vs/workbench/contrib/search/test/browser/anythingQuickAccess.test.ts covering:
  • no separator in the query
  • leading separator
  • basename match with both / and \ separators
  • display-name match where it differs from the URI basename (Source vs code)
  • case-insensitive match
  • partial-prefix non-match (workspace_12 against folder workspace_1)
  • nested path remainders
  • empty-remainder rejection

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds support in the "Go to File" / anything quick access for queries that begin with a workspace folder's name or basename (e.g. folderName/path/to/file.txt), by stripping that leading segment and re-resolving relative to the folder. Also deduplicates results across folders.

Changes:

• Introduce stripWorkspaceFolderPrefix helper and use it in getAbsolutePathFileResults to also try the query with a leading workspace-folder segment removed.
• Extract per-folder resolution into tryAddRelativePathFileResult and deduplicate results using a ResourceMap.
• Add unit tests for stripWorkspaceFolderPrefix.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/vs/workbench/contrib/search/browser/anythingQuickAccess.ts	Adds prefix-stripping behavior, refactors file-result collection, dedupes results.
src/vs/workbench/contrib/search/test/browser/anythingQuickAccess.test.ts	New tests covering separator handling, case-insensitive match, partial match rejection, and remainder preservation.