Re: [rfc-i] Some proposed updates
Henrik Levkowetz <henrik@levkowetz.com> Thu, 05 March 2020 18:55 UTC
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To: Phillip Hallam-Baker <phill@hallambaker.com>, RFC Interest <rfc-interest@rfc-editor.org>
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From: Henrik Levkowetz <henrik@levkowetz.com>
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Date: Thu, 05 Mar 2020 19:54:37 +0100
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Subject: Re: [rfc-i] Some proposed updates
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Hi, Related to this: See Section "5. Possible New Work", subsection "Inline and Display Math" in draft-levkowetz-xml2rfc-v3-implementation-notes: https://tools.ietf.org/html/draft-levkowetz-xml2rfc-v3-implementation-notes-10#section-5 Henrik On 2020-03-05 18:28, Phillip Hallam-Baker wrote: > I am currently working on using XML2RFCv3 to write a set of drafts using > some fairly involved cryptography math. The HTML presentation vastly > improves readability but this naturally leads to discovery of 'issues'. I > know we don't have an ad with plenary authority at the moment but I think > it is useful to keep track for when we do. > > 1) Input of math > > Neither Markdown nor Word are remotely comfortable for > inputting mathematical formulas. Consider the following: > > f(x) = x^2 + 4 > > To present that properly we should render the f and x in italics and the > rest in normal font. So if like me you have multiple equations with > convoluted subscripts, etc., it is a pain in the pattotie. So next time I > get round to working on my tool, I am planning to drop in support for LaTeX > style equations. Writing $f(x) = x^2 + 4$ should cause the text inside the > $$ braces to be rendered as math. > > This does not affect the spec of course, I am raising it here so that > Carsten, myself and anyone else making tools can possibly work out a common > approach. > > 2) Presentation of proofs. > > I frequently write out proofs: > > errors = (code).(more code) > = more.code.code > = more.code^2 > > i.e. e = mc^2 > > Right now, the only ways to do this is with tables or(ab)using <dl> lists > > <dl> > <dt>errors</dt><dd>= (code).(more code)</dd> > <dd> = more.code.code </dd> > <dd> = more.code <sup>2</sup></dd> > <dl> > > I think we should have proper markup for this: > > <proof> > <lhs>errors</ lhs >=<rhs>(code).(more code)</rhs> > =<rhs>more.code.code </rhs> > =<rhs>more.code<sup>2</sup></rhs> > < proof > > > In addition to specifying the left and right hand sides, I would like to be > able to specify the side conditions and proof rules applied. > > 3) Math characters. > > I still haven't seen a list of which characters are supported/unsupported. > It seems that the card suit characters are supported but not commonly used > math symbols like circle-plus, circle-cross, arrows, thus, etc. > > The number of special characters used in Z and VDM are not actually very > large but they are really important. We certainly don't need every UNICODE > math symbol but we do need more than we have at the moment to express > formal methods notations. > > https://en.wikipedia.org/wiki/Mathematical_operators_and_symbols_in_Unicode > > > 4) SVG-Tiny is obsolete and will be deprecated shortly. > > We should drop SVG-Tiny and use SVG as the basis for diagrams. We can still > apply the same restrictions on the use of color but SVG is the standard, > SVG-Tiny is about to be deprecated. There is only one major vendor > supporting it and only in one product. > > SVG-Tiny does not support the features used to create arrows on lines by > almost every drawing tool in use. It is not reasonable to demand that > people make use of an arbitrary subset of a standard that is obsolete. > There are no tools that support SVG-Tiny that do not support full SVG. > > I have looked on the list discussions and absolutely nobody raised the > severely restricted support in SVG-Tiny when diagrams were discussed. So I > fail to see any group decision or consensus on this point. > > 5) There should be more structure for citations to scholarly journals. > > The current <reference> structure was written for the ASCII text style. > Slapping a journal article reference in <annotation> worked. Now that we > have italics in the output, that is insufficient to produce the generally > accepted presentation forms. > > > > _______________________________________________ > rfc-interest mailing list > rfc-interest@rfc-editor.org > https://www.rfc-editor.org/mailman/listinfo/rfc-interest >
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- [rfc-i] Some proposed updates Phillip Hallam-Baker
- Re: [rfc-i] Some proposed updates Henrik Levkowetz