PO filter does not support line wrapped plural form entries...

[Former user]

Plural forms entries that are wrapped cause a filter error

"Plural-Forms: nplurals=3; plural=(n==1 ? 0 : n%10>=2 && n%10<=4 && ( n%100<10 || n%100>=20) ? 1 : 2);\n"

ERROR: Line 1991: Possible extra or invalid plural form of msgstr.