Turns out those warnings for ali(1) actually happen when the prefix is

[nmh] / test / mhshow / test-textcharset

diff --git a/test/mhshow/test-textcharset b/test/mhshow/test-textcharset
index a66db46..d4d7ef0 100755 (executable)
--- a/test/mhshow/test-textcharset
+++ b/test/mhshow/test-textcharset
@@ -20,6 +20,7 @@ if test "$ICONV_ENABLED" -eq 0; then
   test_skip 'test-textcharset requires that nmh have been built with iconv'
 fi
 
+require_locale en_US.utf-8 en_US.utf8
 LC_ALL=en_US.UTF-8; export LC_ALL
 
 expected="$MH_TEST_DIR"/$$.expected