[ruby-core:91917] [Ruby trunk Bug#15718] YAML raises error when dumping strings with UTF32 encoding

Issue #15718 has been updated by marcandre (Marc-Andre Lafortune).


rubenochiavone (Ruben Chiavone) wrote:
> Since it relates to mismatch of regex and YAML text encoding a possible fix is to only attempt to match the text when encoding matches or when text encoding is `ascii_compatible?`. WDYT?

What about:

```
YAML.dump("Hello\nWorld".force_encoding('UTF-32LE'))
```

or other strings like `"123"` that need special formatting?

----------------------------------------
Bug #15718: YAML raises error when dumping strings with UTF32 encoding
https://bugs.ruby-lang.org/issues/15718#change-77249

* Author: marcandre (Marc-Andre Lafortune)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 2.6.2p247
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
```shell
ruby -r yaml -e "p YAML.dump( ''.force_encoding('UTF-32LE') )"

Traceback (most recent call last):
	4: from -e:1:in `<main>'
	3: from /Users/work/.rvm/rubies/ruby-2.6.1/lib/ruby/2.6.0/psych.rb:513:in `dump'
	2: from /Users/work/.rvm/rubies/ruby-2.6.1/lib/ruby/2.6.0/psych/visitors/yaml_tree.rb:118:in `push'
	1: from /Users/work/.rvm/rubies/ruby-2.6.1/lib/ruby/2.6.0/psych/visitors/yaml_tree.rb:136:in `accept'
/Users/work/.rvm/rubies/ruby-2.6.1/lib/ruby/2.6.0/psych/visitors/yaml_tree.rb:298:in `visit_String': incompatible encoding regexp match (US-ASCII regexp with UTF-32LE string) (Encoding::CompatibilityError)
```

Surprisingly, this works in Ruby 2.4.x, but not in 2.2, 2.3, 2.5 nor 2.6!

---Files--------------------------------
yamldumputf32encodingerror.patch (2.55 KB)


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