Re: ct, fj and blackletter ligatures

Date: Sat Nov 02 2002 - 11:06:53 EST

  • Next message: Thomas Lotze: "Re: ct, fj and blackletter ligatures"

    Thomas Lotze wrote,

    > ... Why
    > shouldn't he be allowed to use the Private Use Area just as he
    > personally sees fit?

    Many "Unicoders" regard the PUA as some kind of a "Phantom Zone"
    into which all of the "bad glyphs" are banished forever, never
    to again be mentioned in "polite society".

    Others consider the the "Private" in PUA to be a misnomer, considering
    it to be more "Public". In other words, its a Free Zone reserved by
    the consortium for open use. Many users use the PUA for temporary
    work-around solutions to display issues.

    > How would you approach the ligature problem
    > instead?

    Ideally, ligation should be handled by the font and operating system
    based upon 1) author's wishes, 2) user's wishes, 3) computer's wishes.
    (Where 1 rules yet 2 can over-ride 1. And 3 can't over-ride either.)

    In order to preserve important aspects of text processing, including
    spelling validation and sorting/indexing, the Unicode Standard uses
    some invisible, no-width formatting characters. The ZWJ (zero-width
    joiner), for example, requests the OS and font to provide a connected
    or joined glyph in substitution for the string in the display, if such
    a glyph is available in the font. So, the string "c" plus "<ZWJ>"
    plus "t" would be expected to render a "ct" ligature in display if

    One popular, upcoming method of providing such substitutions involves
    OpenType technology. Eagerly awaited advances in OpenType have been
    occurring frequently of late, and perhaps more complete ligation support
    for Latin typography will appear soon.

    Best regards,

    James Kass.

    This archive was generated by hypermail 2.1.5 : Sat Nov 02 2002 - 11:46:22 EST