13.4.4 Extending ‘Makefile’ in ‘po/’

All files called ‘Rules-*’ in the ‘po/’ directory get appended to the ‘po/Makefile’ when it is created. They present an opportunity to add rules for special PO files to the Makefile, without needing to mess with ‘po/Makefile.in.in’.

GNU gettext comes with a ‘Rules-quot’ file, containing rules for building catalogs ‘en@quot.po’ and ‘en@boldquot.po’. The effect of ‘en@quot.po’ is that people who set their LANGUAGE environment variable to ‘en@quot’ will get messages with proper looking symmetric Unicode quotation marks instead of abusing the ASCII grave accent and the ASCII apostrophe for indicating quotations. To enable this catalog, simply add en@quot to the ‘po/LINGUAS’ file. The effect of ‘en@boldquot.po’ is that people who set LANGUAGE to ‘en@boldquot’ will get not only proper quotation marks, but also the quoted text will be shown in a bold font on terminals and consoles. This catalog is useful only for command-line programs, not GUI programs. To enable it, similarly add en@boldquot to the ‘po/LINGUAS’ file.

Similarly, you can create rules for building message catalogs for the ‘sr@latin’ locale – Serbian written with the Latin alphabet – from those for the ‘sr’ locale – Serbian written with Cyrillic letters. See Invoking the msgfilter Program.

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