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Hi Cyrus,<br class="">
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<div class="">On Oct 10, 2018, at 12:46 PM, Cyrus Daboo <<a href="mailto:cyrus@daboo.name" class="">cyrus@daboo.name</a>> wrote:</div>
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<div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Courier; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">The
intent of that was to effectively deprecate the behavior of DTSTART not matching the pattern (without making it outright illegal by using a MUST), with the idea that a future update to 5545 would switch to MUST.</span><br style="caret-color: rgb(0, 0, 0); font-family: Courier; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
<br style="caret-color: rgb(0, 0, 0); font-family: Courier; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
<span style="caret-color: rgb(0, 0, 0); font-family: Courier; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">So
the point is no one should be using a DTSTART that does not match the RRULE, so no erratum is needed. The behavior was left undefined precisely to move people away from relying on it working.</span><br style="caret-color: rgb(0, 0, 0); font-family: Courier; font-size: 15px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
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<div class="">Given this, perhaps an extension that shifts to MUST is a better approach?</div>
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<div class="">-Andrew</div>
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