6.11.2.2 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 `sed'):

msgcat --use-first -o update.po compendium1.po compendium2.po file.po msgmerge update.po file.pot | sed -e '/^#~/d' > file.po