Error when EXDATE spans multiple lines

[acmurmeltier69]

(I think this is not related to #113, so I created a separate issue)

If a set of excluded dates is added via EXDATE, the system returns the wrong dates after the initial week.

DTSTART;VALUE=DATE:20170313
RRULE:FREQ=WEEKLY;UNTIL=20171224T000000Z;INTERVAL=2;BYDAY=MO;WKST=SU
EXDATE;VALUE=DATE:
20170410,
20170605

It appears that the concatenation in ICal.php Line 379 adds the dates to the wrong line (i.e. the RRULE line above)

In contrast, if EXDATE is presented in a single row, the dates seem to be correct

DTSTART;VALUE=DATE:20170313
RRULE:FREQ=WEEKLY;UNTIL=20171224T000000Z;INTERVAL=2;BYDAY=MO;WKST=SU
EXDATE;VALUE=DATE:20170410,20170605

[u01jmg3]

• Problem surrounds this line where the parser blanks what it believes to be a key missing a value
  • (The parser can understand multiple lines containing dates for an EXDATE but the problem relates to a missing value directly after the key and its colon)
• Debating what to do as each line of an iCal file should be a key/value pair per line, with subsequent values following
  • EXDATE should follow the same pattern just as its spec definition states

---

e.g. this will work

DTSTART;VALUE=DATE:20170313
RRULE:FREQ=WEEKLY;UNTIL=20171224T000000Z;INTERVAL=2;BYDAY=MO;WKST=SU
EXDATE;VALUE=DATE:20170410,
 20170605

[acmurmeltier69]

Hi

Unfortunately the iCAL spec RFC5545 allows more flexibility (See section 2 content lines)

A long line can be split between any two characters by inserting a CRLF immediately followed by a single linear white-space character

[acmurmeltier69]

This seems to do the job adding:

$lines = explode("\r\n", $this->unfold(implode("\r\n", $lines)));

after line 172

[u01jmg3]

Got a fix coming