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-rw-r--r--module/vcomponent/control.scm1
-rw-r--r--module/vcomponent/datetime.scm7
-rw-r--r--module/vcomponent/recurrence/internal.scm4
3 files changed, 12 insertions, 0 deletions
diff --git a/module/vcomponent/control.scm b/module/vcomponent/control.scm
index add48c28..5fe5b8b0 100644
--- a/module/vcomponent/control.scm
+++ b/module/vcomponent/control.scm
@@ -22,6 +22,7 @@
(set! (prop component key) val))))
keys)))
+;; TODO what is this even used for?
(define-syntax with-replaced-properties
(syntax-rules ()
[(_ (component (key val) ...)
diff --git a/module/vcomponent/datetime.scm b/module/vcomponent/datetime.scm
index 887ae48b..ca4f90e9 100644
--- a/module/vcomponent/datetime.scm
+++ b/module/vcomponent/datetime.scm
@@ -68,6 +68,13 @@ Event must have the DTSTART and DTEND protperty set."
date-difference datetime-difference)
(prop e 'DTEND) (prop e 'DTSTART))))
+;;
+;; |-----| extent of event
+;; |-----| time we are interested in,
+;; defined through @var{start-date} and @var{end-date}
+;; |X| part of event within that time (X)
+;;
+;; Returns the length of the interval (X).
(define-public (event-length/clamped start-date end-date e)
(let ((end (or (prop e 'DTEND)
(if (date? (prop e 'DTSTART))
diff --git a/module/vcomponent/recurrence/internal.scm b/module/vcomponent/recurrence/internal.scm
index 8e84a8b6..1b9dd405 100644
--- a/module/vcomponent/recurrence/internal.scm
+++ b/module/vcomponent/recurrence/internal.scm
@@ -51,6 +51,10 @@
freq until count interval bysecond byminute byhour
byday bymonthday byyearday byweekno bymonth bysetpos
wkst)
+ ;; TODO possibly validate fields here
+ ;; to prevent creation of invalid rules.
+ ;; This was made apparent when wkst was (incorrectly) set to MO,
+ ;; which later crashed generate-recurrence-set.
(make-recur-rule% freq until count interval bysecond byminute byhour
byday bymonthday byyearday byweekno bymonth bysetpos
wkst))