[elpa] externals/org 31b3b164d1 1/5: ox-icalendar.el: create alarm at event time

[ELPA Syncer]

branch: externals/org
commit 31b3b164d100362365bd301d44a838cdf1059109
Author: Mikhail Skorzhinskii <mskorzhinskiy@eml.cc>
Commit: Ihor Radchenko <yantar92@gmail.com>

    ox-icalendar.el: create alarm at event time
    
    * lisp/ox-icalendar.el (org-icalendar-force-alarm): Option to set alarm
    even if alarm time is set to zero.
    * lisp/ox-icalendar.el (org-icalendar--valarm): create VALARM at the
    event start if the alarm time is set to zero and
    `org-icalendar-force-alarm' is set to true.
    
    TINYCHANGE
---
 lisp/ox-icalendar.el | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/lisp/ox-icalendar.el b/lisp/ox-icalendar.el
index 966e4d6e7f..410289abfb 100644
--- a/lisp/ox-icalendar.el
+++ b/lisp/ox-icalendar.el
@@ -69,6 +69,17 @@ for timed events.  If non-zero, alarms are created.
   :version "24.1"
   :type 'integer)
 
+(defcustom org-icalendar-force-alarm nil
+  "Non-nil means alarm will be created even if is set to zero.
+
+This overrides default behaviour where zero means no alarm.  With
+this set to non-nil and alarm set to zero, alarm will be created
+and will fire at the event start."
+  :group 'org-export-icalendar
+  :type 'boolean
+  :package-version '(Org . "9.6")
+  :safe #'booleanp)
+
 (defcustom org-icalendar-combined-name "OrgMode"
   "Calendar name for the combined iCalendar representing all agenda files."
   :group 'org-export-icalendar
@@ -795,8 +806,11 @@ Return VALARM component as a string, or nil if it isn't 
allowed."
   (let ((alarm-time
         (let ((warntime
                (org-element-property :APPT_WARNTIME entry)))
-          (if warntime (string-to-number warntime) 0))))
-    (and (or (> alarm-time 0) (> org-icalendar-alarm-time 0))
+          (if warntime (string-to-number warntime) nil))))
+    (and (or (and alarm-time
+                 (> alarm-time 0))
+            (> org-icalendar-alarm-time 0)
+            org-icalendar-force-alarm)
         (org-element-property :hour-start timestamp)
         (format "BEGIN:VALARM
 ACTION:DISPLAY
@@ -804,8 +818,10 @@ DESCRIPTION:%s
 TRIGGER:-P0DT0H%dM0S
 END:VALARM\n"
                 summary
-                (if (zerop alarm-time) org-icalendar-alarm-time alarm-time)))))
-
+                 (cond
+                  ((and alarm-time org-icalendar-force-alarm) alarm-time)
+                  ((and alarm-time (not (zerop alarm-time))) alarm-time)
+                  (t org-icalendar-alarm-time))))))
 
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