Plain text custom fraction input

[Doug Ewell]

Marcel Schneider <charupdate at orange dot fr> wrote:

> Representing fractions as U+2044 is known as a compatibility mapping,
> equally like representing a superscript as , while (I go on checking
> my knowledge...) representing a precomposed diacriticized letter as is
> known as a decomposition mapping. The difference between the two ways
> of getting the same thing is in plain text. With decomposition we stay
> in plain text, while compatibility mappings need formatting, thus
> leaving the field of plain text. 

It's not a matter of one being plain text and the other not. Read
Section 3.7, "Decomposition" [1] to learn about canonical and
compatibility decomposition.

In general, the Glossary [2] and FAQ [3] are useful resources.

[1] http://www.unicode.org/versions/Unicode7.0.0/ch03.pdf#G729
[2] http://www.unicode.org/glossary/
[3] http://www.unicode.org/faq/

--
Doug Ewell | http://ewellic.org | Thornton, CO ����