Use C.UTF-8 locale

bash-completion.spec

@@ -5,7 +5,7 @@
 
 Name:           bash-completion
 Version:        2.8
-Release:        3%{?dist}
+Release:        4%{?dist}
 Epoch:          1
 Summary:        Programmable completion for Bash
 
@@ -67,7 +67,7 @@ rm %{buildroot}%{_datadir}/bash-completion/completions/{cowsay,cowthink}
 
 %check
 # For some tests involving non-ASCII filenames
-export LANG=en_US.UTF-8
+export LANG=C.UTF-8
 %if %{with tests}
 # This stuff borrowed from dejagnu-1.4.4-17 (tests need a terminal)
 tmpfile=$(mktemp)
@@ -93,6 +93,10 @@ make -C completions check
 
 
 %changelog
+* Sun Nov 18 2018 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> - 1:2.8-4
+- Use C.UTF-8 locale
+  See https://fedoraproject.org/wiki/Changes/Remove_glibc-langpacks-all_from_buildroot
+
 * Mon Aug 13 2018 Siteshwar Vashisht <svashisht@redhat.com> - 1:2.8-3
 - Document how to turn off default completions
   Resolves: #1575571