GNU gettext utilities: Using Compendia
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8.4.2 Using Compendia
You can use a compendium file to initialize a translation from scratch or to update an already existing translation.
8.4.2.1 Initialize a New Translation File
Since a PO file with translations does not exist the translator can merely use /dev/null to fake the “old” translation file.
msgmerge --compendium compendium.po -o file.po /dev/null file.pot
8.4.2.2 Update an Existing Translation File
Concatenate the compendium file(s) and the existing PO, merge the result with the POT file and remove the obsolete entries (optional, here done using ‘msgattrib’):
msgcat --use-first -o update.po compendium1.po compendium2.po file.po msgmerge update.po file.pot | msgattrib --no-obsolete > file.po
