src/vs/platform/terminal/common/capabilities/commandDetectionCapability.ts/CommandDetectionCapability/handlePromptStart
class CommandDetectionCapability:	handlePromptStart(options?: IHandleCommandOptions): void {
		this._currentCommand.promptStartMarker = options?.marker || this._terminal.registerMarker(0);
		this._logService.debug('CommandDetectionCapability#handlePromptStart', this._terminal.buffer.active.cursorX, this._currentCommand.promptStartMarker?.line);
	}