po: Don't mark JavaScript strings as c-format

We don't use printf-style C format macros like "%s" in the JavaScript
code, at least not for translations. But xgettext interprets the "$0% Free"
in pkg/kubernetes/scripts/nodes.js as C format string, which confuses
translation tools and blocks the proper translation of this string.

As there doesn't seem to be a way to change the `--keyword=ngettext`
argument to do that, just filter out the `c-format` tag with sed.

Closes #10058

Author: martinpitt

po/Makefile.am

@@ -85,13 +85,14 @@ po/cockpit.html.pot: po/POTFILES.html.in
 
 # Extract cockpit style javascript translations
 po/cockpit.js.pot: po/POTFILES.js.in
-	$(XGETTEXT) --default-domain=cockpit --output=$@ --language=C --keyword= \
+	$(XGETTEXT) --default-domain=cockpit --output=- --language=C --keyword= \
 		--keyword=_:1,1t --keyword=_:1c,2,1t --keyword=C_:1c,2 \
 		--keyword=N_ --keyword=NC_:1c,2 \
 		--keyword=gettext:1,1t --keyword=gettext:1c,2,2t \
 		--keyword=ngettext:1,2,3t --keyword=ngettext:1c,2,3,4t \
 		--keyword=gettextCatalog.getString:1,3c --keyword=gettextCatalog.getPlural:2,3,4c \
-		--from-code=UTF-8 --directory=$(srcdir) --files-from=$^
+		--from-code=UTF-8 --directory=$(srcdir) --files-from=$^ | \
+		sed '/^#/ s/, c-format//' > $@
 
 po/cockpit.manifest.pot: po/POTFILES.manifest.in
 	$(srcdir)/tools/missing $(srcdir)/po/manifest2po -d $(srcdir) -f $^ -o $@