Remove `# coding: utf-8` from Ruby files
The default script encoding is Encoding::UTF-8 after v2.0.
MODIFY
mrbgems/mruby-pack/test/pack.rb
mrbgems/mruby-pack/test/pack.rb
-# coding: utf-8
PACK_IS_LITTLE_ENDIAN = "\x01\00".unpack('S')[0] == 0x01
def assert_pack tmpl, packed, unpacked

MODIFY
mrbgems/mruby-string-ext/test/numeric.rb
mrbgems/mruby-string-ext/test/numeric.rb
-# coding: utf-8
-
assert('Integer#chr') do
assert_equal("A", 65.chr)
assert_equal("B", 0x42.chr)

MODIFY
mrbgems/mruby-string-ext/test/string.rb
mrbgems/mruby-string-ext/test/string.rb
-# coding: utf-8
##
# String(Ext) Test

MODIFY
mrbgems/mruby-symbol-ext/test/symbol.rb
mrbgems/mruby-symbol-ext/test/symbol.rb
-# coding: utf-8
##
# Symbol(Ext) Test

MODIFY
mrblib/array.rb
mrblib/array.rb
-# coding: utf-8
##
# Array
#

MODIFY
mruby-source.gemspec
mruby-source.gemspec
-# coding: utf-8
lib = File.expand_path('../lib', __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require 'mruby/source'

MODIFY
test/t/string.rb
test/t/string.rb
-# coding: utf-8
##
# String ISO Test

Remove `# coding: utf-8` from Ruby files

The default script encoding is Encoding::UTF-8 after v2.0.

https://ruby-doc.org/core-2.1.2/Encoding.html#class-Encoding-label-Script+encoding