O'Reilly logo

Unicode Demystified by Richard Gillam

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Properties of Letters

In the preceding sections, we looked at a bunch of letter-related properties. First, there were the various subdivisions of the “letter” category (Lu, Ll, Lt, Lm, and Lo). Then there were the Alphabetic and Ideographic categories. Finally, there's the case, defined by the Lu, Ll, and Lt general categories and by the separate Uppercase and Lowercase categories.

For cased letters (i.e., characters in the Lu, Ll, and Lt categories), Unicode provides additional information about how the characters in the different cases relate to each other. In particular, it provides information on how to map a character to its counterpart in the opposite case (or in titlecase) as well as a set of mappings that allow you to normalize away case ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required