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Encodings and Regimes - Old Content (view source)
Revision as of 18:25, 17 October 2006
, 18:25, 17 October 2006→How it works?: minor typo corrected
You know that all characters in a font have a number. If you type <code>a</code>, the font mechanism makes sure that you see an <context>a</context>. In reality the font shows you the character that is put on the numerical position of <code>a</code>. In the font Dingbats for example, the character on that position is not an <context>a</context>, but a symbol.
===In LaTeX=== the combination <code>\"{a}</code> can mean two things:
* in most fonts: show the character on the a given numerical position, which means that there is one character <context>\"{a}</context>.
That's also the reason there are, or used to be, special fonts for Polish an Czech and other languages: they contain predefined characters in one single numerical position, e.g. <code>\v{s}</code> and <code>\v{c}</code> that TeX does not have to create anew from two signs.
===In ConTeXt=== the combination <code>\"{a}</code> means one thing: <code>\adiaeresis</code> (see [[source:enco-acc.tex|enco-acc]]). This <code>\adiaeresis</code> can mean one of two things, depending on the encoding:
* Numerical position, or
* The fallback case (defined in [[source:enco-def.tex|enco-def]]), where a diaeresis/umlaut is placed atop an <context>a</context> glyph. Hyphenation implications as Hans described.
