io.c (rb_io_ext_int_to_encs, parse_mode_enc): bom-prefixed name is
not a real encoding name, just a fallback. so the proper conversion
should take place even if if the internal encoding is equal to the
bom-prefixed name, unless actual encoding is equal to the internal
encoding. [ruby-core:54563] [Bug #8323]
io.c (io_set_encoding_by_bom): reset extenal encoding if no BOM
found. [ruby-core:54569]
Added by nobu (Nobuyoshi Nakada) about 11 years ago
io.c: conversion from bom encoding
not a real encoding name, just a fallback. so the proper conversion
should take place even if if the internal encoding is equal to the
bom-prefixed name, unless actual encoding is equal to the internal
encoding. [ruby-core:54563] [Bug #8323]
found. [ruby-core:54569]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40462 b2dd03c8-39d4-4d8f-98ff-823fe69b080e