fix: require "English" for $OUTPUT_RECORD_SEPARATOR#255
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`$OUTPUT_RECORD_SEPARATOR` is defined as the alias of `$\` in `English` gem.
Without this gem, the variable is not defined, and Ruby warns with the
message below.
```
warning: global variable '$OUTPUT_RECORD_SEPARATOR' not initialized
```
By the way, I'm not confident the code really requires the global
variable, but I kept the behavior as it is.
```ruby
token = /[-!#{$OUTPUT_RECORD_SEPARATOR}%&'*+.^_`|~0-9a-zA-Z]+/
```
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$OUTPUT_RECORD_SEPARATORis defined as the alias of$\inEnglishgem. Without this gem, the variable is not defined, and Ruby warns with the message below.By the way, I'm not confident the code really requires the global variable, but I kept the behavior as it is.