Query params will be encoded twice in newest Version 10.7.2

After the release of version 10.7.2, values of query params in the expression will be encoded twice.
Following URL will be generated when I provide the string :§$%&/()= as parameter value:
https://www.abc.com/foo?bar=%253A%25C2%25A7%2524%2525%2526%2F%2528%2529%253D
When I decode the URL I get following result:
https://www.abc.com/foo?bar=%3A%C2%A7%24%25%26/%28%29%3D
And exactly this result shows a URL that is encoded, so therefore when I decode the result again, I get following string:
https://www.abc.com/foo?bar=:§$%&/()=

Unfortunatly, changing the HTTP client did not help. Am I the only one who got this problem?

[kdavisk6]

To better help and understand your issue, can you please provide your Feign interface definition and a simple working example?

[thole]

I hope this demo helps.
Many thanks

public class Demo {
    public interface Echo {
        @RequestLine("GET /get?someUrl={value}")
        String sampleCall(@Param("value") String value);
    }

    public static void main(String[] args){
        Echo echo = Feign.builder()
                .logLevel(Logger.Level.FULL)
                .logger(new Logger.ErrorLogger())
                .target(Echo.class, "https://postman-echo.com");

        System.out.println(echo.sampleCall("http://www.google.de"));
    }
}

generated url in 10.7.2 : https://postman-echo.com/get?someUrl=http%253A%2F%2Fwww.google.de
generated url in 10.7.0 : https://postman-echo.com/get?someUrl=http:%2F%2Fwww.google.de
generated url in 10.1.0 : https://postman-echo.com/get?someUrl=http%3A%2F%2Fwww.google.de

[kdavisk6]

I found the issue. CollectionFormat was encoding values again when it did not need to be. In addition, decodeSlash was being ignored in query string values. #1160 restores decodeSlash support and corrects the double encoding.

The example above after this change will now be:

 public interface Echo {
        @RequestLine("GET /get?someUrl={value}")
        String sampleCall(@Param("value") String value);
}
https://postman-echo.com/get?someUrl=http%3A//www.google.de

public interface Echo {
        @RequestLine("GET /get?someUrl={value}", decodeSlash=false)
        String sampleCall(@Param("value") String value);
}
https://postman-echo.com/get?someUrl=http%3A%2F%2Fwww.google.de