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string.c: respect the actual encoding

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* string.c (rb_enc_str_coderange): respect the actual encoding of
  if a BOM presents, and scan for the actual code range.
  [ruby-core:91662] [Bug #15635]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67167 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2019-03-05 00:32:15 +00:00
parent 4045cb8222
commit 593505ac6f
2 changed files with 10 additions and 2 deletions
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5
string.c
View File

@ -655,12 +655,13 @@ rb_enc_str_coderange(VALUE str)
if (cr == ENC_CODERANGE_UNKNOWN) {
int encidx = ENCODING_GET(str);
rb_encoding *enc = rb_enc_from_index(encidx);
if (rb_enc_mbminlen(enc) > 1 && rb_enc_dummy_p(enc)) {
if (rb_enc_mbminlen(enc) > 1 && rb_enc_dummy_p(enc) &&
rb_enc_mbminlen(enc = get_actual_encoding(encidx, str)) == 1) {
cr = ENC_CODERANGE_BROKEN;
}
else {
cr = coderange_scan(RSTRING_PTR(str), RSTRING_LEN(str),
get_actual_encoding(encidx, str));
enc);
}
ENC_CODERANGE_SET(str, cr);
}

7
test/ruby/test_m17n.rb
View File

@ -269,6 +269,13 @@ class TestM17N < Test::Unit::TestCase
assert_empty(encs, bug10598)
end
def test_utf_without_bom_valid
encs = [Encoding::UTF_16, Encoding::UTF_32].find_all {|enc|
!(+"abcd").encode!(enc).force_encoding(enc).valid_encoding?
}
assert_empty(encs)
end
def test_object_utf16_32_inspect
EnvUtil.suppress_warning do
begin