Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →
instance method
ARGF#internal_encoding
ARGF.internal_encoding → encoding
io.c
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static VALUE
argf_internal_encoding(VALUE argf)
{
return argf_encoding(argf, rb_io_internal_encoding);
}
Returns the internal encoding for strings read from ARGF as an Encoding object.
If ARGF.set_encoding has been called with two encoding names, the second is returned. Otherwise, if Encoding.default_external has been set, that value is returned. Failing that, if a default external encoding was specified on the command-line, that value is used. If the encoding is unknown, nil is returned.