From: "jeremyevans0 (Jeremy Evans)" <noreply@...>
Date: 2021-11-19T19:33:23+00:00
Subject: [ruby-core:106176] [Ruby master Bug#18350] String with foreign character results in: TypeError (nil can't be coerced into Integer)

Issue #18350 has been updated by jeremyevans0 (Jeremy Evans).


I cannot reproduce this on Windows using the default 437 code page (using Ruby 2.7.0) or on OpenBSD (using Ruby 2.7.4):

```
C:\Ruby27-x64\bin>chcp
Active code page: 437

C:\Ruby27-x64\bin>set RUBYOPT=-Ku

C:\Ruby27-x64\bin>irb
irb(main):001:0> s = "P��rpura"
irb(main):002:0> s
=> "P��rpura"
irb(main):003:0> RUBY_VERSION
=> "2.7.0"
```

```
$ RUBYOPT=-Ku irb27
irb(main):001:0> s = "P��rpura"
=> "P��rpura"
irb(main):002:0> RUBY_VERSION
=> "2.7.4"
```

When I try it on Windows with the 65001 (UTF-8) code page, the entire command prompt window containing irb closes (not just the ruby process).  I also tried with Ruby 3.0 and got the same result.  I can paste the `s = "P��rpura"` text directly into the command prompt outside of irb, so it doesn't appear to be purely a Windows command prompt issue.

You appear to be running on Mac, so the situation must be different there.  Can you reproduce this issue with Ruby 3.0?

----------------------------------------
Bug #18350: String with foreign character results in: TypeError (nil can't be coerced into Integer)
https://bugs.ruby-lang.org/issues/18350#change-94780

* Author: diadbrown (Dave Brown)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x86_64-darwin17]
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
``` ruby
2.7.2 :001 > s = "P��rpura"
Traceback (most recent call last):
        7: from /Users/xxx/.rvm/rubies/ruby-2.7.2/bin/irb:23:in `<main>'
        6: from /Users/xxx/.rvm/rubies/ruby-2.7.2/bin/irb:23:in `load'
        5: from /Users/xxx/.rvm/rubies/ruby-2.7.2/lib/ruby/gems/2.7.0/gems/irb-1.2.6/exe/irb:11:in `<top (required)>'
        4: from /Users/xxx/.rvm/rubies/ruby-2.7.2/lib/ruby/2.7.0/reline/unicode.rb:99:in `calculate_width'
        3: from /Users/xxx/.rvm/rubies/ruby-2.7.2/lib/ruby/2.7.0/reline/unicode.rb:99:in `scan'
        2: from /Users/xxx/.rvm/rubies/ruby-2.7.2/lib/ruby/2.7.0/reline/unicode.rb:108:in `block in calculate_width'
        1: from /Users/xxx/.rvm/rubies/ruby-2.7.2/lib/ruby/2.7.0/reline/unicode.rb:108:in `+'
TypeError (nil can't be coerced into Integer)
2.7.2 :002 > 
```

Ruby 2.6.3 does not have this problem:
``` ruby
2.6.3 :001 > s = "P��rpura"
 => "P��rpura" 
2.6.3 :002 > 
```





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