A simple plain-text file format for recording events. Inspired by the simplicity and utility of the todo.txt.

2024-6-23T12:30 Eat lunch calories:659
2024-6-23T14:17 Amazon purchase price:24.33 category:home
2024-6-23T12:30 Eat dinner calories:712 
2024-6-24T06:32,2024-6-24T07:30 Workout
2024-6-24T08:13 Mood: feeling good
2024-6-25T11:22:33 Something down to the second

• A single line in your log.txt file represents a single event.
• Events always begin with a date-time string.
• If the event has a duration, a comma , directly followed by another date-time string representing the stop time may be included
• Start and stop dates are in ISO 8601 date-time format or a valid substring of the format. The date portion is required (e.g. 2024-11-05). Time segments are optional, but included time segments must have greater time segments defined. For example, 2024-11-05T12:55 is valid and but 2024-11-05T55 is invalid.
• A single space ( ) separates the date(s) from the event text
• The event text may contain colon (:) separated key value pairs. Where keys are non-empty word character (\w+) strings and values are non-whitespace character strings. ([^\s]*) separated by a colon and the value contains no whitespace. For example, price:$12.43 is valid and book:"Some Title" is invalid.
• The event text may contain an single unnamed value at the end of the event. Any text after a colon followed by a space (: ) will be considered this value. For example, in 2024-11-05T12:55 Read book score:7/10: Some Title, the unnamed value would be Some Title