Ok i see your point. Im not sure then. What do you think is best?
```ruby
# Furthest from the result, but simplest
"50,450,350,70".to_query(:crop)
# Closer to the result, but still a dependency
CGI::escape("crop=50,450,350,70")
# Closest to the result, but hardest to understand (could have a comment)
"crop=50%2C70%2C350%2C450"