$ rpm -q calibre
calibre-8.4.0-alt2.x86_64

$ grep -E '^(Name|GenericName|Comment|NoDisplay)' /usr/share/applications/calibre-gui.desktop
Name=Calibre
GenericName=E-book library management
Comment=E-book library management: Convert, view, share, catalogue all your e-books
$ grep -c '\[ru\]' /usr/share/applications/calibre-gui.desktop
0

$ grep -E '^(Name|GenericName|Comment|NoDisplay)' /usr/share/applications/calibre-ebook-edit.desktop
Name=E-book editor
GenericName=Editor for E-books
Comment=Edit E-books in various formats
NoDisplay=true
$ grep -c '\[ru\]' /usr/share/applications/calibre-ebook-edit.desktop
0

$ grep -E '^(Name|GenericName|Comment|NoDisplay)' /usr/share/applications/calibre-ebook-viewer.desktop
Name=E-book viewer
GenericName=Viewer for E-books
Comment=Viewer for E-books in all the major formats
NoDisplay=true
$ grep -c '\[ru\]' /usr/share/applications/calibre-ebook-viewer.desktop
0

$ grep -E '^(Name|GenericName|Comment|NoDisplay)' /usr/share/applications/calibre-lrfviewer.desktop
Name=LRF viewer
GenericName=Viewer for LRF files
Comment=Viewer for LRF files (SONY ebook format files)
NoDisplay=true
$ grep -c '\[ru\]' /usr/share/applications/calibre-lrfviewer.desktop
0

$ grep -c 'xml:lang="ru"' /usr/share/metainfo/calibre-gui.metainfo.xml
3

# для сравнения, соседний пункт раздела «Офис»:
$ grep -E '^(GenericName|Comment)\[ru\]' /usr/share/applications/libreoffice-writer.desktop
GenericName[ru]=Текстовый процессор
Comment[ru]=Создание и редактирование текста и изображений в письмах, отчётах, документах и веб-страницах.