2008年6月28日星期六

Liberation字体提高文档互操作性

在GNU/Linux系统上,如果你用OpenOffice.org打开Word文档,常会碰到乱码,多数时候这并非是OOo的问题,而是缺少字体。大多数Word文档使用了像“Arial”或“Times New Roman”等微软版权的核心字体,微软已经不再向非Windows用户免费发布它们,因此GNU/Linux发行版默认没有安装。字体本身可能是有版权的,但字体的结构并没有,因此可以据此创造外形不同,工作效果相同的免费字体。Red Hat就是如此做的,不久前它发布了Liberation字体。
Liberation fonts,最初是以GPLv2+两个例外的许可证发布。第一个例外没啥问题,只是声明在文档中植入该字体不表示是对文档的派生工作。第二个例外引发了异议,它是一个反固化条款,要求任何实际的发行必须允许安装它的修改版本,该条款甚至引发了RMS的反对。由于许可证问题,大的发行版没有加入Liberation字体。不过问题现在已经解决,Debian已经接受了Liberation,其它发行版预计不久后就会跟进。

On May 9, 2007, Red Hat announced the public release of these fonts under the trademark LIBERATION at the Red Hat Summit. There are three sets: Sans (a substitute for Arial, Albany, Helvetica, Nimbus Sans L, and Bitstream Vera Sans), Serif (a substitute for Times New Roman, Thorndale, Nimbus Roman, and Bitstream Vera Serif) and Mono (a substitute for Courier New, Cumberland, Courier, Nimbus Mono L, and Bitstream Vera Sans Mono). The fonts are now available for you to install.

Those running Red Hat® Enterprise Linux® and/or Fedora™ systems who want to install the fonts in RPM format can get them from the links below. In the future, they will be available through the Red Hat Network® service. We have also provided the fonts in the popular True Type format.

You are free to use these fonts on any system you would like. You are free to redistribute them under the GPL+exception license found in the download. Using these fonts does not subject your documents to the GPL--it liberates them from any proprietary claim. Once you have installed these fonts, we encourage you to make them your default in Thunderbird, Firefox, and Open Office. Heck, for that matter make them your default in Microsoft® Office®, in Microsoft Windows®, in Apple OSX®... in anything you would like. In many applications you can set Times New Roman, Arial, and Courier New to convert to these fonts.

This is just one way for Red Hat to say thank you to all our friends in the open source community for all you have done to make us successful.

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