Function FindMatchingWorkspaceContainsPatterns 

fn FindMatchingWorkspaceContainsPatterns(
    Folders: &[PathBuf],
    Patterns: &[String],
) -> Vec<String>

Return the subset of Patterns for which at least one workspace folder contains a matching file or directory. Patterns are interpreted the same way VS Code does for workspaceContains:<pattern> activation events:

• A bare filename (no slash, no wildcards) matches an entry with that name at the workspace root (e.g. package.json).
• A path with slashes but no wildcards matches a direct descendant relative to the root (e.g. .vscode/launch.json).
• A glob with **/ prefix matches any descendant up to a bounded depth.
• Any other wildcard form is matched via a simple segment-by-segment walk honouring * (single segment) and ** (any number of segments).

Matching is bounded to depth 3 and 4096 total directory entries per workspace root to keep the cost sub-100 ms on large monorepos. Anything deeper is rare for activation-event triggers; the trade-off is documented in VS Code’s own ExtensionService.scanExtensions.