This would have found the bug fixed by the previous commit.
CHECK_I18N_RECODE([from ISO-8859-1 to UTF-8 with overflow],
[ISO-8859-1], [UTF-8],
[Tsch\374\337!], [Tsch\303\274\303\237!])
+
+AT_SETUP([convert unknown encoding])
+AT_KEYWORDS([i18n])
+AT_CHECK([i18n-test recode nonexistent1 nonexistent2 asdf], [0], [asdf
+],
+ [Warning: cannot create a converter for `nonexistent1' to `nonexistent2': Invalid argument
+])
+AT_CLEANUP
\f
AT_BANNER([i18n concatenation])