[ruby-core:96119] [Ruby master Bug#16402] UTF-16LE BOM causing regex match to fail with "invalid byte sequence in UTF-8"

Issue #16402 has been updated by shyouhei (Shyouhei Urabe).

Status changed from Open to Feedback

I bet your locale setting is UTF-8?  Hence the error message.  You have to be explicit then.  `File.read("u.txt", mode: "rb:bom|utf-16")`  Would give you a correct String instance.

----------------------------------------
Bug #16402: UTF-16LE BOM causing regex match to fail with "invalid byte sequence in UTF-8"
https://bugs.ruby-lang.org/issues/16402#change-82980

* Author: PikachuEXE (Pikachu Leung)
* Status: Feedback
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-darwin18]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
``` shell
$ ruby -e 'File.binwrite("u.txt", "\xff\xfe\x00\x01")'
$ file u.txt 
u.txt: Little-endian UTF-16 Unicode text, with no line terminators
$ ruby -e 'p /\w+/.match?(File.read("u.txt"))'
Traceback (most recent call last):
	1: from -e:1:in `<main>'
-e:1:in `match?': invalid byte sequence in UTF-8 (ArgumentError)
```

No error should be raised, just like when comparing with string without BOM

``` shell
$ ruby -e 'p /\w+/.match?(File.read("u.txt")[2..-1])'
false

```




-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:[email protected]?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>