David Roussel commented on Improvement LOGBACK-262

I strongly prefer backwards compatibility.

We should keep %date

{ISO8601} and add %date{ISO8601_STRICT}. I would prefer this even if the old format was not ISO8601 complient.

Re: comma or dot for the millisecond.

I used %date{ISO8601}

once upon a time, but then I found that excel couldn't parse the ss.SSS formatted time. But it could parse ss.SSS, and so I switched to using %d

{"yyyy-MM-dd HH:mm:ss,SSS"}

, as sometimes it's nice to paste log lines into excel and use some formuls on the date-time stamp and plot some graphs so the slow bits of my code.
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