<< Back to previous view

[CLJ-1181] clojure.pprint/code-dispatch breaks on certain types of anonymous functions Created: 10/Mar/13  Updated: 05/Feb/14

Status: Open
Project: Clojure
Component/s: None
Affects Version/s: Release 1.5
Fix Version/s: None

Type: Defect Priority: Minor
Reporter: Devin Walters Assignee: Unassigned
Resolution: Unresolved Votes: 1
Labels: print

  (with-pprint-dispatch code-dispatch 
                        (pp/pprint (read-string "(fn* [x] x)"))))

breaks because the format string here: https://github.com/clojure/clojure/blob/master/src/clj/clojure/pprint/dispatch.clj#L378 expects a sequence. In the case of (fn* [x] x) it is passed a symbol.

Comment by Jean Niklas L'orange [ 18/Mar/13 5:40 PM ]

I think the main "issue" here resides within the undocumented functionality of fn*. (fn* [x] x) is a semantically working function, but (fn [x] x) expands into (fn* ([x] x)). Anonymous function literals expand into (fn* [gensyms] (...)), and as such, it also accepts expressions like (fn* [x] x). Should pprint pretty print expressions which has used fn* directly, or should it "just" ignore it?

Generated at Tue Jan 23 07:38:35 CST 2018 using JIRA 4.4#649-r158309.