<to...@tuxteam.de> writes: >> > There is a related issue about EOLs, not just \r\n -- each line should >> > be a maximum of 75 characters; this is handled by >> > org-icalendar-fold-string >> >> May you please provide a link to the iCalendar spec document section >> describing this requirement? > > It's in rfc5545 [1], referenced to from rfc7986 [2].
Since VEVENT and VTODO are wrapped in `org-icalendar-fold-string', I think the only place this error may occur is in the preamble created by `org-icalendar--vcalendar', e.g. in PRODID, X-WR-CALDESC, etc. The fix is to move the call to `org-icalendar-fold-string' out of org-icalendar--vevent/vtodo, and instead put it in `org-icalendar--vcalendar'. Then the line folding will apply to the whole VCALENDAR instead of just the VTODO and VEVENT. An earlier version of my CRLF patch actually did something like this. I can push such a fix over the weekend. Let me know if you'd rather I send the patch for review here first.