class Reline::LineEditor

def em_lower_case(key) 

def em_lower_case(key)
ne.bytesize > @byte_pointer
_size, = Reline::Unicode.em_forward_word(@line, @byte_pointer)
 = @line.byteslice(@byte_pointer, byte_size).grapheme_clusters.map { |mbchar|
char =~ /[A-Z]/ ? mbchar.downcase : mbchar
in
 = @line.byteslice((@byte_pointer + byte_size)..-1)
e = @line.byteslice(0, @byte_pointer) + part
e_pointer = @line.bytesize
sor = calculate_width(@line)
sor_max = @cursor + calculate_width(rest)
e += rest