gawk: Extension Version String
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1 16.4.5.3 Registering An Extension Version String
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1 You can register a version string that indicates the name and version of
1 your extension with 'gawk', as follows:
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1 'void register_ext_version(const char *version);'
1 Register the string pointed to by 'version' with 'gawk'. Note that
1 'gawk' does _not_ copy the 'version' string, so it should not be
1 changed.
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1 'gawk' prints all registered extension version strings when it is
1 invoked with the '--version' option.
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