Enable case-insensitive ignore files

[dmitrivMS]

Add ignoreCase option to constructor and use case-insensitive glob API to support it. Added some unit-tests as well.

Contributes towards fixing #10633.

[Copilot]

Pull Request Overview

This PR adds case-insensitive matching support to the IgnoreFile class for handling ignore files (like .gitignore). This allows paths to be matched against ignore patterns regardless of case when the ignoreCase flag is enabled.

Key changes:

• Added an ignoreCase parameter to the IgnoreFile constructor and propagated it through the matching logic
• Updated string comparison to use startsWithIgnoreCase when case-insensitive matching is enabled
• Added comprehensive test coverage for case-insensitive ignore file matching
• Fixed several spelling errors in comments ("Preservering" → "Preserving", "expectred" → "expected", "ouside" → "outside", "naieve" → "naive")

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/vs/workbench/services/search/common/ignoreFile.ts	Added ignoreCase parameter to constructor, imported startsWithIgnoreCase utility, updated path matching logic to support case-insensitive comparisons, and fixed spelling errors in comments
src/vs/workbench/services/search/test/common/ignoreFile.test.ts	Updated test helper functions to accept ignoreCase parameter and added new test suite for case-insensitive matching scenarios

Comments suppressed due to low confidence (1)

src/vs/workbench/services/search/common/ignoreFile.ts:32

• The updateContents method doesn't preserve the ignoreCase setting when re-parsing the ignore file. This could cause the ignore file to switch from case-insensitive to case-sensitive (or vice versa) after an update. The parseIgnoreFile call should pass this.ignoreCase to maintain consistency, or the internal isPathIgnored function should close over this.ignoreCase properly.

	updateContents(contents: string) {
		this.isPathIgnored = this.parseIgnoreFile(contents, this.location, this.parent);