What is the legal test for an application for leave to appeal in forma pauperis?

However, my colleagues' disposition of the matter is fraught with difficulties for the defendant. My colleagues say that the trial judge should certify that the appeal is not taken in good faith unless the defendant (in addition to showing his indigence and that he is a citizen) in his renewed application "identifies with reasonable particularity the claimed errors which will be the basis for the appeal." It is highly likely that the defendant, not a lawyer, will not be able to comply with that requirement if he is not aided by counsel. For reasons stated in my dissenting opinion in United States v. Johnson, 2 Cir., 238 F.2d 565 decided today, I think that we should appoint such counsel or direct the trial judge to do so, and that such counsel should assist the defendant from here on until (a) defendant's application for leave to appeal in forma pauperis is finally decided and (b) in the conduct of his appeal if that application should be granted.