Fixes <http://bugs.gnu.org/10742>.
Reported by Alírio Eyng <alirioeyng@ig.com.br>.
* gnulib-local/lib/localcharset.c.diff (environ_locale_charset): Change
to set CODESET to "" when LOCALE lacks a dot. Return "ISO-8859-1"
when CODESET is the empty string.
* lib/localcharset.c: Update.
* test-suite/standalone/Makefile.am (check_SCRIPTS): Add
`test-command-line-encoding2'.
(TESTS): Likewise.
* test-suite/standalone/test-command-line-encoding2: New file.
