Error on multiline plural-forms

[daroczig]

See e.g. the below header:

msgid ""
msgstr ""
"Project-Id-Version: R 4.2.0\n"
"Report-Msgid-Bugs-To: bugs.r-project.org\n"
"POT-Creation-Date: 2022-01-14 11:27\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: Automatically generated\n"
"Language-Team: none\n"
"Language: ar\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=6; plural=n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 "
"&& n%100<=10 ? 3 : n%100>=11 ? 4 : 5;\n"

The last two lines are the Plural-Forms definition broken into two lines as per the PO file def to fit 80 chars on a line, see e.g. https://www.gnu.org/software/gettext/manual/html_node/Translating-plural-forms.html

Would it be possible to support reading these files? Currently it failed with There should be exactly one msgid found in each block. Are you missing a blank line? as per read.R.