Breaks in Ruby 3.x due to deprecation of URI.escape

[pkarjala]

Due to the deprecation of URI.escape (see ruby/uri@61c6a47 and ruby/uri#14), this gem will no longer work in Ruby 3.x based Rails projects.

Fix might be straightforward to replace with CGI.escape instead.

Specific error from a project using growlyflash 0.10.1:

NoMethodError (undefined method `escape' for URI:Module

        response.headers['X-Message'] = URI.escape(growlyhash.to_json)
                                           ^^^^^^^):

[pkarjala]

Tested replacing URI.escape with CGI.escape which works, but re-encodes spaces as + instead. Which isn't ideal, but at least fixes the underlying issue.

Alternatively, can remove the URI.escape entirely and the response will send fine with no re-encoded content. Not sure if URI.escape is needed or not for security or standardization reasons?

[pkarjala]

Following up with this, replacing URI.escape with ERB::Util.url_encode seems to fix the issue entirely. Will issue pull request on the chance this ever gets updated.