The definition of the
gettext interface comes from a Uniforum
proposal. It was submitted there by Sun, who had implemented the
gettext function in SunOS 4, around 1990. Nowadays, the
gettext interface is specified by the OpenI18N standard.
The main point about this solution is that it does not follow the method of normal file handling (open-use-close) and that it does not burden the programmer with so many tasks, especially the unique key handling. Of course here also a unique key is needed, but this key is the message itself (how long or short it is). See Comparison for a more detailed comparison of the two methods.
The following section contains a rather detailed description of the
interface. We make it that detailed because this is the interface
we chose for the GNU
gettext Library. Programmers interested
in using this library will be interested in this description.