1. A method, comprising: retrieving event data from a file system; causing display of a graphical user interface that displays one or more field delimiter options specifying one or more delimiters that appear in one or more events in the event data that indicate a field value; in response to a specified field delimiter option of the one or more field delimiter options, parsing the event data to identify field values in one or more events in the event data using the specified field delimiter option and concurrently displaying field values identified in the one or more events as the parsing occurs; storing the selected field delimiter option and one or more associated field names in a configuration file, wherein the configuration file specifies configuration parameters for field extraction during raw data indexing.