Description:
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date_parse expects months 1..12 only.

date_parse("13/1/5769")  for  month=13, Ehul in Jewish calendar, results 
in  month==3 instead of month==13.

It does, however, report the error array showing "Unexpected Character."

It would be nice if date_parse could handle the months properly (just 
report back a "13" for the month). The older approach of substr() is my 
workaround.

Reproduce code:
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From manual page: function.date-parse
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date_parse("13/1/5769")  

Expected result:
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Array for month should show 13 instead of 3