Spurious output when first opened in lumo

[arichiardi]

Expected behavior

When first opening the repl and cursor is on code buffer, only cljs.user => should appear.

Actual behavior

The output of a command (for me it is arglists because the cursor was after fn symbol, but this varies) is printed in the *inf-clojure* buffer.

Steps to reproduce the problem

C-c C-z with popup window enabled and move the cursor around in the code buffer.

or in ielm:

ELISP> (setq inf-clojure-repl-type nil)
nil
ELISP> (inf-clojure-arglist 'defn)
nil

Environment & Version information

inf-clojure version information

Latest master

Lein/Boot version

Lumo latest master

Reminder to self 😓 😬 😀

[arichiardi]

This happens because the detection code of the repl type is not sync so it gets interleaved with the arglists call.

[arichiardi]

I found elisp-latch that happens to make things synchronous

[bbatsov]

This happens because the detection code of the repl type is not sync so it gets interleaved with the arglists call.

The the arglists call shouldn't be producing any REPL output, so I'm a bit confused how it might be causing this.

[bbatsov]

@arichiardi ping

I'm assuming this is one of the things blocking us from a 2.0 release.

[arichiardi]

Yep, this still happens, I need to debug it.