When exporting an Org file as iCalendar and org-icalendar-timezone is set to e.g. "Europe/Berlin", it gets inserted as "EUROPE/BERLIN" during export (and some CalDAV servers don't like that).
This is because "%Z" gets replaced with org-icalendar-timezone, and the FIXEDCASE parameter isn't set in the call to replace-regexp-in-string. The attached patch fixes that. -David
diff --git a/lisp/org-icalendar.el b/lisp/org-icalendar.el index 389dc5d..12cd058 100644 --- a/lisp/org-icalendar.el +++ b/lisp/org-icalendar.el @@ -677,7 +677,7 @@ a time), or the day by one (if it does not contain a time)." (setq fmt (if have-time (replace-regexp-in-string "%Z" org-icalendar-timezone - org-icalendar-date-time-format) + org-icalendar-date-time-format t) ";VALUE=DATE:%Y%m%d")) (concat keyword (format-time-string fmt time (and (org-icalendar-use-UTC-date-timep)