textfiles - add comment

src/vs/workbench/services/textfile/browser/textFileService.ts

@@ -283,9 +283,13 @@ export abstract class AbstractTextFileService extends Disposable implements ITex
 		// before event
 		await this._onWillRunOperation.fireAsync({ operation: FileOperation.DELETE, target: resource }, CancellationToken.None);
 
+		// Check for any existing dirty file model for the resource
+		// and do a soft revert before deleting to be able to close
+		// any opened editor with these files
 		const dirtyFiles = this.getDirtyFileModels().map(dirtyFileModel => dirtyFileModel.resource).filter(dirty => isEqualOrParent(dirty, resource));
 		await this.doRevertFiles(dirtyFiles, { soft: true });
 
+		// Now actually delete from disk
 		await this.fileService.del(resource, options);
 
 		// after event