GNOME Evolution Expression Functions Cheat Sheet

Time-Related Functions

• time-now: Returns the current time.
• make-time: Creates a new time value.
• time-add-day: Adds a day to a given time.
• time-day-begin: Finds the beginning of a day for a given time.
• time-day-end: Finds the end of a day for a given time.

Component-Related Functions

• uid?: Checks if a component matches a specific UID.
• occur-in-time-range?: Checks if an event occurs within a specified time range.
• due-in-time-range?: Checks if a task is due within a specified time range.
• contains?: Checks if a component contains a certain text.
• has-start?: Checks if a component has a start time.
• has-end?: Checks if a component has an end time.
• has-due?: Checks if a task has a due date.
• has-duration?: Checks if an event has a specified duration.
• has-alarms?: Checks if a component has alarms.
• has-alarms-in-range?: Checks if a component has alarms within a specified time range.
• has-recurrences?: Checks if an event is recurring.
• has-categories?: Checks if a component is assigned to certain categories.
• is-completed?: Checks if a task is completed.
• completed-before?: Checks if a task was completed before a specified time.
• has-attachments?: Checks if a component has attachments.
• percent-complete?: Checks the completion percentage of a task.
• occurrences-count?: Counts the occurrences of an event within a range.
• starts-before?: Checks if an event starts before a specified time.

Example:

A filter that shows tasks that don’t have a due date or a start date.

(or (not has-due?) (not has-start?))

Reference in the code can be found here.