# Re: Too narrowly defined: DIVISION SIGN & COLON

From: Hans Aberg <haberg-1_at_telia.com>
Date: Wed, 11 Jul 2012 19:01:39 +0200

On 11 Jul 2012, at 18:20, Julian Bradfield wrote:

> On 2012-07-11, Hans Aberg <haberg-1_at_telia.com> wrote:
>> There are a number of other incompatibilities between original TeX and Unicode:
>>
>> For example, ASCII letters are in TeX math mode typeset in italics, but Unicode has a mathematical italics style, so ASCII letters should be typeset upright in a strict Unicode mode. And similar for Greek letters, I gather.
>
> There's no reason why TeX should typeset ASCII as upright, any more
> than it should typeset "\begin{section}" as that literal string! The
> use of ASCII characters in math mode is simply an input convention, to
> indicate the desired output of italic letters in a style appropriate
> for single-letter mathematical variables.
> The use of other Unicode characters in TeX input files is also simply
> an input convention; how they get typeset depends on many other things
> than what they look like in the code charts.

Unicode has added all the characters from TeX plus some, making it possible to use characters in the input file where TeX is forced to use ASCII. This though changes the paradigm, and it is a question of which paradigm one wants to adhere to.

Hans
Received on Wed Jul 11 2012 - 12:03:48 CDT

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