From: William F Hammond <hammond@csc.albany.edu>

Date: Mon, 09 Jul 2007 12:29:26 -0400

To: W3C MathML Discussion <www-math@w3.org>

Message-ID: <i7r6nha6c9.fsf@hilbert.math.albany.edu>

Date: Mon, 09 Jul 2007 12:29:26 -0400

To: W3C MathML Discussion <www-math@w3.org>

Message-ID: <i7r6nha6c9.fsf@hilbert.math.albany.edu>

I'm pleased to announce that a significant update of GELLMU, version 0.8.4, has been released at http://www.albany.edu/~hammond/gellmu/ and posted to CTAN where it may be found in support/gellmu. GELLMU stands for "Generalized Extensible LaTeX-Like MarkUp", which is the use of markup like that of LaTeX to write for SGML and XML document types. The package includes software for an XML document type (which may be written in LaTeX-like markup) that emulates much of LaTeX article while admitting robust translation to XHTML+MathML. One important change in this update is revised internal handling of mathematical prime accents. In most cases old source files will not require change. Manuals have been updated for the first time since 2004. An excerpt from the README file follows. -- Bill ---------------------------------------------------------------------- CHANGES IN VERSION 0.8.4 (5 July 2007) --- "Regular" GELLMU: About 30 new commands have been added, mostly mathematical, including more arrows, more dots, as well as "\prime" and "\backprime" (emulating the corresponding AMS LaTeX names). Also "itimes" (invisible times) and "icomma" (invisible comma) join "aF" (invisible applyFunction) for optional use as weak semantic hints. The handling of mathematical prime accents has been completely revised in order that the XHTML+MathML formatting will work better with the (largely undocumented) handling of the corresponding unicode data points in the web browsers that support MathML. In only a few cases, however, will legacy source files require change. In this connection, there is now an explicit rule for distinguishing in _regular_ GELLMU source between uses of the character "'" as (a) apostrophe (\apos) and (b) right-single-quote (\rsq): it's an apostrophe if and only if it is followed by a "word-character" (as determined according to the sense of that term for regular expression handling in GNU Emacs). Sequences of two, three or four "'" characters become \rdq, \rtq, or \rqq, respectively, unless, with the first of these the string "''" is found to balance a previous string "``" in which case the markup \quophrase{} is still generated. (Moreover, matching pairs of "`" and "'" still generate \squophrase{} when that is enabled by certain manners of calling the syntactic translator.) The handling of limits for sums, integrals, and products has been revised beginning with a document type definition revision which should be compatible with old source files that passed correctly through the production stream. Although processing toward the LaTeX and XHTML+MathML formats had been "working", there were errors in the classic HTML handling of these limits resulting from the fact that the SGML/XML content models for \sum, \int, and \prod had been inadequate. By default links, internal and external, found in \text{} in math mode are now set using xlink rather than using an XML namespace switch to enable HTML anchors. This is tied to the environmental variable GELLMU_XLink. Also the previous limited handling of bold and italic style in \text{} in math mode has also been revised to treatment that, though less elegant, avoids namespace switching. When XHTML+MathML output is produced, but regardless of the availabilty of "dtd" validation, the production stream provides a "child-count" checker for certain MathML elements. It is intended that this particular step, like the XML conformance check, will work without reference to any formal document type definition. Consequently, the use of classical HTML named entity references has been eliminated. Width specification for tabular p-cells is now supported in HTML and XHTML using CSS style attributes. There have been some miscellaneous revisions of the limited representation of mathematics in the classic HTML formatting, and there have been numerous bug fixes and minor improvements in all of the various components of the "regular" production stream. --- Syntactic translator: Improved diagnostics for handling mismatched arguments in \newcommand invocations. For the context of "regular" GELLMU: (1) elaborated handling of prime accents and (2) stronger efforts to diagnose unbalanced '$' characters for toggling in and out of inline math zones. Correction of a bug related to the signaling of an error when an opening balancing character cannot be matched and elimination of the unwanted double announcement of line numbers with many error messages. ----------------------------------------------------------------------Received on Monday, 9 July 2007 16:29:31 UTC

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