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Subject: Re: [office-formula] "international" characters?
Rob, robert_weir@us.ibm.com wrote: > It might be useful (and simpler) to define this entirely within the value > space and not say anything about how the characters are displayed. In the > value space we don't say anything about the encoding. > > +1 on not getting into display > In fact, OpenFormula should be equally valid for describing an expression > language executed on a terminal-less server which has electrodes hooked up > to a horse that taps its hoof to indicate the correct answer. > > I like the horse example but fear my concern was much more commonplace than counting horses. It seemed to me that there were multiple value spaces in play for "characters" and if so, I was voicing a preference for just one. > I don't know if it is too late to get this in, but I've been thinking of > the idea of defining OpenFormula on the basis of operations on an abstract > machine. The details wouldn't change, but we'd have a section that > formally defines the capabilities of the abstract machine: can read a > string Unicode characters, parse the formula, has certain range of > arithmetic and logical operations that it can perform, etc. Each function > would then be a statement about how the abstract machine processes input > and produces output. But we can operate purely in the value space for > that. > > Well, that sounds interesting but wouldn't creating detailed conformance requirements achieve the same end? That is to say that some value space (probably several value spaces) could be segmented and conformance defined in terms of both one or more portions of value spaces as well as functions, expressions, etc.? The new since ODF 1.1 conformance requirements at OASIS do seem to lend themselves to having fairly detailed conformance clauses. Hope you are having a great day! Patrick > -Rob > > > Patrick Durusau <patrick@durusau.net> wrote on 01/06/2009 10:04:52 AM: > >> Greetings! >> >> The phrase "international characters" is used under small group (2.1.1) >> for named expression identifiers. It is noted that some applications may >> > > >> not display a glyph but an ISO 10646 code. >> >> But, under text (string) (4.1), it is noted that "implementations >> *should* support Unicode strings, but *shall* at least support strings >> of ASCII characters." >> >> Question: In all cases are we talking about Unicode strings in one of >> the defined representations (UTF-8), etc.? >> >> Question: Or, is the string (4.1) language meant to allow a non-Unicode >> based encoding? >> >> Question: If a non-Unicode based encoding, which definition of that >> encoding are we using? >> >> I don't necessarily disagree but it does seem odd that Unicode support >> is required for identifiers but optional under text. >> >> Noting that Unicode "support" doesn't necessarily mean that you get a >> meaningful display of the text. (Can someone more familiar with display >> issues comment on the usual behavior for missing characters? I seem to >> recall that all you usually see are some glyph but I don't remember >> which one. I don't recall it being the Unicode code number.) >> >> Hope everyone is having a great day! >> >> Patrick >> >> -- >> Patrick Durusau >> patrick@durusau.net >> Chair, V1 - US TAG to JTC 1/SC 34 >> Convener, JTC 1/SC 34/WG 3 (Topic Maps) >> Editor, OpenDocument Format TC (OASIS), Project Editor ISO/IEC 26300 >> Co-Editor, ISO/IEC 13250-1, 13250-5 (Topic Maps) >> >> >> --------------------------------------------------------------------- >> To unsubscribe from this mail list, you must leave the OASIS TC that >> generates this mail. Follow this link to all your TCs in OASIS at: >> https://www.oasis-open.org/apps/org/workgroup/portal/my_workgroups.php >> >> > > > --------------------------------------------------------------------- > To unsubscribe from this mail list, you must leave the OASIS TC that > generates this mail. Follow this link to all your TCs in OASIS at: > https://www.oasis-open.org/apps/org/workgroup/portal/my_workgroups.php > > > -- Patrick Durusau patrick@durusau.net Chair, V1 - US TAG to JTC 1/SC 34 Convener, JTC 1/SC 34/WG 3 (Topic Maps) Editor, OpenDocument Format TC (OASIS), Project Editor ISO/IEC 26300 Co-Editor, ISO/IEC 13250-1, 13250-5 (Topic Maps)
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