An RFC 1123 date can be generated approximately using fn:format-dateTime with a picture string of "[FNn3], [D01] [MNn3] [Y04] [H01]:[m01]:[s01] [Z0000]".
Given a dateTime like 1994-06-06T07:29:35Z, applying fn:format-dateTime with this picture string should return:
Mon, 06 Jun 1994 07:29:35 +0000
But according to the documentation on the picture string at https://www.w3.org/TR/xpath-functions-31/#date-picture-string, to truncate the day of the week and the month to 3 letters, we should not append 3 but *,-3, and to ensure a 4-digit year, we should use Y0001 instead of Y04. In other words, the picture string should be:
My testing in BaseX, eXist, and Saxon shows that the picture string from the spec fails to produce the expected output, whereas the modified picture string produces the expected output:
Mon, 06 Jun 1994 07:29:35 +0000
The test expression that produces this expected output:
In https://www.w3.org/TR/xpath-functions-31/#func-parse-ietf-date, a note contains a picture string which should produce an RFC 1123 / IETF-style date:
Given a dateTime like
1994-06-06T07:29:35Z, applyingfn:format-dateTimewith this picture string should return:But according to the documentation on the picture string at https://www.w3.org/TR/xpath-functions-31/#date-picture-string, to truncate the day of the week and the month to 3 letters, we should not append
3but*,-3, and to ensure a 4-digit year, we should useY0001instead ofY04. In other words, the picture string should be:… instead of:
My testing in BaseX, eXist, and Saxon shows that the picture string from the spec fails to produce the expected output, whereas the modified picture string produces the expected output:
The test expression that produces this expected output: