src/vs/workbench/contrib/extensions/browser/extensionsViewlet.ts/ExtensionsViewPaneContainer/normalizedQuery
class ExtensionsViewPaneContainer:	private normalizedQuery(): string {
		return this.searchBox
			? this.searchBox.getValue()
				.trim()
				.replace(/@category/g, 'category')
				.replace(/@tag:/g, 'tag:')
				.replace(/@ext:/g, 'ext:')
				.replace(/@featured/g, 'featured')
				.replace(/@popular/g, this.extensionManagementServerService.webExtensionManagementServer && !this.extensionManagementServerService.localExtensionManagementServer && !this.extensionManagementServerService.remoteExtensionManagementServer ? '@web' : '@popular')
			: '';
	}