强调功能 [英] Underscore function

问题描述

我在这里看一些C源$ C ​​$ c和我发现这一点：

I'm here looking at some C source code and I've found this:

fprintf(stderr, _("Try `%s --help' for more information.\n"), command);

我已经看到了下划线，当我在wxWidget一看，和我读它用于国际化。我发现它真的很可怕（最少intutive名话），但我因子评分它只是一个奇怪的wxWidget约定。

I already saw the underscore when I had a look at wxWidget, and I read it's used for internationalization. I found it really horrible (the least intutive name ever), but I tought it's just another weird wxWidget convention.

现在我在一些艾莎源再次找到它。有谁知道它来自哪里？

Now I find it again in some Alsa source. Does anyone know where it comes from?

推荐答案

它来自GNU 的gettext ，包旨在缓解国际化进程。在 _（）函数只是一个字符串包装。这个功能基本上取代了运行时给定的字符串与系统的语言翻译，如果有的话（即，如果他们运了的.mo 文件中查找该语言与程序）。

It comes from GNU gettext, a package designed to ease the internationalization process. The _() function is simply a string wrapper. This function basically replaces the given string on runtime with a translation in the system's language, if available (i.e. if they shipped a .mo file for this language with the program).

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