Re: What is a Chinese font?

From: mpsuzuki@hiroshima-u.ac.jp
Date: Wed Feb 27 2008 - 11:20:26 CST

  • Next message: Bob_Hallissy@sil.org: "Re: What is a Chinese font?"

    Hi Bob,

    On Wed, 27 Feb 2008 12:20:04 +0000
    Bob_Hallissy@sil.org wrote:

    >Andrew wrote on 02/27/2008 10:22:31 AM:
    >
    >> On 27/02/2008, vunzndi@vfemail.net <vunzndi@vfemail.net> wrote:
    >> >
    >> > correction - for some reason the binary editor modified versions fail.
    >> > Though the same settings when adjusted in fontforge work.
    >>
    >> All OT font tables have a checksum (see
    >> <http://www.microsoft.com/typography/otspec/otff.htm>), so if you
    >> modify the the contents of a table using a binary editor but do not
    >> recalculate the checksum this may explain why it fails.
    >
    >Rather than use a binary editor, you could use hackOS2 command from the
    >command-line font hacking utilities available at
    >http://scripts.sil.org/FontUtils. These utilities recalculate font
    >checksums properly. And hackOS/2 touches ONLY the OS/2 table (well, and
    >the font directory and head table where checksums are stored).

    I agree the checksum in head table is difficult for mental
    arithmetic - I ignored it and caused strange errors, I must
    apologize. Your Perl scripts preserve the contents in the
    unknown tables and in "gap" area that is not a part of tables
    listed in TTF directory?

    Regards,
    mpsuzuki

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