`methods(f)` not showing correct signatures for functions with default arguments

[henrik-wolf]

I just came across this strange behaviour of methods, which does seem like a bug to me... When I create a function with a default argument in one line, methods drops everything behind it, when showing the signature:

julia> function test(a=1; b)
       @show a
       @show b
       end
test (generic function with 2 methods)

julia> methods(test)
# 2 methods for generic function "test":
[1] test() in Main at REPL[1]:1
[2] test(a; b) in Main at REPL[1]:1

When I create the (to my understanding equivalent) function in two steps, everything looks as I would expect it:

julia> function test(a; b)
       @show a
       @show b
       end
test (generic function with 1 method)

julia> test(; b) = test(1; b=b)
test (generic function with 2 methods)

julia> methods(test)
# 2 methods for generic function "test":
[1] test(; b) in Main at REPL[2]:1
[2] test(a; b) in Main at REPL[1]:1

I installed julia with juliaup, here is the versioninfo:

julia> versioninfo()
Julia Version 1.8.5
Commit 17cfb8e65ea (2023-01-08 06:45 UTC)
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 8 × Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-13.0.1 (ORCJIT, skylake)
  Threads: 1 on 8 virtual cores

[vtjnash]

This is fixed by f9e1c6c, as can be see on master:

# 2 methods for generic function "test" from Main:
 [1] test(; var""...)
     @ REPL[54]:1
 [2] test(a; b)
     @ REPL[54]:1

(although apparently my fix has a bug in it, since I compare s::String === :var"...", resulting in the unintended var"" text appearing there also)

[henrik-wolf]

Alright! Seems like I was not able to find that Issue.