etc/symbols
2013-08-31 wenzelm uniform abbrevs for left/right arrows;
2013-08-31 wenzelm more abbrevs according to Isabelle/HOL ASCII replacement syntax;
2013-08-31 wenzelm added common alternative for == (its ambiguity also avoids conflict with ==>);
2013-08-30 wenzelm single-letter abbrev does not make sense -- too many candidates;
2013-08-30 wenzelm fewer conflicts -- adhoc resolution of == vs. ==> via unicode (!) image;
2013-08-30 wenzelm more symbol abbrevs;
2013-08-30 wenzelm misc tuning -- reduce conflicts;
2013-08-30 wenzelm more symbol abbrevs, based on ProofGeneral-4.2/isar/isar-unicode-tokens.el and traditional Isabelle/HOL ASCII replacement syntax;
2013-08-28 wenzelm complete symbols only in backslash forms -- less intrusive editing, greater chance of finding escape sequence in text;
2013-08-25 wenzelm discontinued rendering of obsolete \<onesuperior>, \<twosuperior>, \<threesuperior>;
2013-08-18 wenzelm discontinued redundant abbreviations -- Isabelle/jEdit provides keyboard shortcuts already;
2013-08-13 wenzelm discontinued special treatment of \<^isub> and \<^isup> in rendering or editor front-end;
2012-11-24 wenzelm more robust font for control symbols, to ensure these obscure codepoints are properly rendered;
2012-11-24 wenzelm tuned symbol groups;
2012-11-24 wenzelm tuned symbol groups;
2012-11-21 wenzelm clarified symbol groups, despite this traditional arrangement in X-symbol grid;
2012-11-20 wenzelm some grouping of Isabelle symbols, based on X-Symbol grid in PG-3.7.1.1 and a proposal by Fabian Immler;
2012-08-03 wenzelm prefer calligrapic \<RR> \<II> over \<Re> \<Im> for "screen" display (NB: official unicode defines only one version of these glyphs, unlike TeX);
2012-01-14 wenzelm discontinued default rendering for Oheimb's double-space;
2011-06-21 wenzelm some arrow symbols from DejaVuSansMono for bsub/esub/bsup/esup;
2011-06-20 wenzelm removed obsolete font specification;
2011-06-19 wenzelm abbreviations for special control symbols;
2011-06-19 wenzelm some unicode chars for special control symbols;
2011-04-06 wenzelm more symbol abbrevs;
2010-11-08 wenzelm avoid clash of \<upharpoonright> vs. \<restriction> (cf. 666ea7e62384 and 3c49dbece0a8);
2010-05-31 wenzelm tuned abbrevs for long arrows, according to usual ASCII syntax;
2009-10-29 wenzelm removed slightly exotic symbol abbreviations for now -- achieves a coherent (unique) mapping;
2009-10-22 tbourke Fix a duplicate abbreviation || in etc/symbols.
2009-06-26 wenzelm tuned abbrevs;
2009-06-23 wenzelm fixed abbrev !! for \<And>;
2008-12-20 wenzelm removed Ids;
2008-08-24 wenzelm activated \<A>, \<a>, \<AA>, \<aa>;
2008-08-16 wenzelm tuned abbrevs;
2008-08-15 wenzelm added some abbrevs;
2008-08-15 wenzelm removed redundant "symbol" property;
2008-08-15 wenzelm Default interpretation of some Isabelle symbols.
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