Kaixo! On Thu, Nov 29, 2001 at 12:24:41AM +0700, Theppitak Karoonboonyanan wrote: > On Wed, Nov 28, 2001 at 09:32:15AM +0100, Pablo Saratxaga wrote: > > > tis620.xxxx-x and tis620-x both use negative expand; that is needed for > > combining characters. > > As stated above, I think the negative expand is forbidden for monospace > or charcell fonts, according to X spec.
In practice that would mean that programs using monospace or charcell are restricted to a given set of languages, excluding Thai, Arabic, all indic languages, etc. > So, rendering engines should > also use special placement algorithm to combine the characters, like > what has been done in xterm or emacs. So, I think the idea of X spec charcell fonts is obsolete; it don't allow good output for the user. What is wanted is "unvariable column with" display, with a colum that can be the result of one or more chars, either by combination of accent like chars over a previously typed base char; or the replacement with a completly different glyph (eg: ligatures). > The exception is for proportional fonts, where negative expand is allowed. Is that checked somewhere in X libs ? I often used proportional fonts where only monospaced or charcell were expected and it worked (well, the output may be very ugly, as the columns were all out of sync; but I never got any error message or crashing nor anything like that) -- Ki ça vos våye bén, Pablo Saratxaga http://www.srtxg.easynet.be/ PGP Key available, key ID: 0x8F0E4975 _______________________________________________ I18n mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/i18n
