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Preparing Program Sources
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   For the programmer, changes to the C source code fall into three
categories.  First, you have to make the localization functions known
to all modules needing message translation.  Second, you should
properly trigger the operation of GNU `gettext' when the program
initializes, usually from the `main' function.  Last, you should
identify and especially mark all constant strings in your program
needing translation.

   Presuming that your set of programs, or package, has been adjusted
so all needed GNU `gettext' files are available, and your `Makefile'
files are adjusted (Note: Maintainers), each C module having
translated C strings should contain the line:

     #include <libintl.h>

   The remaining changes to your C sources are discussed in the further
sections of this chapter.

Triggering

Triggering `gettext' Operations

Mark Keywords

How Marks Appear in Sources

Marking

Marking Translatable Strings

c-format

Telling something about the following string

Special cases

Special Cases of Translatable Strings