RE: Different results of format-date() when using empt
> While trying to output a value as ISO calendar using a > default language, I came across a little niche in the xslt > specification that I find hard to interpret right. My problem > is this: when I want to output as ISO calendar, I have to > provide the last three arguments for format-date(). > The spec says that I can use the empty sequence to use for > the default value, which value is implementation-defined. > Fair enough. But when I use the empty sequence for language, > the processor defaults to language X and outputs with > [Language: en] somedate, saying in fact that it does not > support the default language requested! Am I missing > something, or is this is a processor dependent bug? Saxon is taking the default from the Java locale, and then falling back to English if you haven't installed a date localisation for that locale. It would probably be more sensible to collapse these two steps, which would mean you didn't get the [Language: en] in the output. The current behaviour of Saxon is conformant with the spec, but there are other conformant behaviours that might be more user-friendly. Michael Kay http://www.saxonica.com/ > > My hunch is that the processor takes the current language > setting from system properties, which is, likely, to vary > from system to system (in my case 'nl'). What I expected it > to, is to default to a fixed language code, namely 'en' (or > any other for that matter). That way, the following two > statements would be equal: > > Ex 1) format-date(current-date(), '[D1]/[Y1]') Ex 2) > format-date(current-date(), '[D1]/[Y1]', (), (), ()) > > Output ex. 1) 10/2006 > Output ex. 2) [Language: en] 10/2006 > > In some way, this feels like violating the specs, but I > cannot be sure of that. The specs say: "When any of these > arguments is omitted or is an empty sequence, an > implementation-defined default value is used." > > You can only omit all three last arguments at once. I expect > the "default value" to be the same all the time, instead > being different for 'omitting' and 'empty sequence'. > > I would like to use the following statement (3), for logging > my stuff to some system. Unfortunately I have to resort > statement (4), to get rid of the [Language: en] part in the > output. But specifying the language does not feel right, > because I want the default to be used, to be sure the > processor can support the default (but it doesn't). > > Ex 3) format-date(current-date(), '[D1] [MNn] [Y1], (), > 'ISO', ()) Ex 4) format-date(current-date(), '[D1] [MNn] > [Y1], 'en', 'ISO', ()) > > Output ex 3) [Language: en]2 October 2006 Output ex 4) 2 October 2006 > > Does anybody has some experience with this with other processors? > Anybody any thoughts on this or on how I should interpret the > particular part of the specs? Is the spec indeed open to > implement for different outputs for (1) and (2), or is that > an error in the processor? > > I tested with Saxon 8.7.1 > > Cheers, > Abel Braaksma
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