REPL completion error: UndefVarError

[luchr]

Open julia with REPL, type @nonexist. and hit Tab:

   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: https://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?help" for help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.7.0-DEV.5138 (2018-05-19 22:52 UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit a465d33f6 (1 day old master)
|__/                   |  x86_64-redhat-linux

julia> @nonexist.┌ Error: Error in the keymap
│   exception =
│    LoadError: UndefVarError: @nonexist not defined
│    Stacktrace:
│     [1] top-level scope
│     [2] lower at ./meta.jl:68 [inlined]
│     [3] get_type(::Expr, ::Module) at /TEST/usr/share/julia/stdlib/v0.7/REPL/src/REPLCompletions.jl:362
│     [4] complete_symbol(::String, ::getfield(REPL.REPLCompletions, Symbol("##15#17"))) at /TEST/usr/share/julia/stdlib/v0.7/REPL/src/REPLCompletions.jl:63
│     [5] completions(::String, ::Int64) at /TEST/usr/share/julia/stdlib/v0.7/REPL/src/REPLCompletions.jl:648
...

[JeffBezanson]

This seems to be fixed. Maybe by #26930 ?

[luchr]

Yes. It has been fixed. [I don't know when].

[cafaxo]

This does not seem to be fixed yet:

               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: https://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.7.0-beta2.91 (2018-07-24 04:22 UTC)
 _/ |\__'_|_|_|\__'_|  |  Commit cbb6433669 (0 days old master)
|__/                   |  x86_64-pc-linux-gnu

julia> @nonexist.┌ Error: Error in the keymap
│   exception =
│    LoadError: UndefVarError: @nonexist not defined
│    Stacktrace:
│     [1] top-level scope
│     [2] lower at ./meta.jl:68 [inlined]
│     [3] get_type(::Expr, ::Module) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v0.7/REPL/src/REPLCompletions.jl:422
│     [4] complete_symbol(::String, ::getfield(REPL.REPLCompletions, Symbol("##21#25")), ::Module) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v0.7/REPL/src/REPLCompletions.jl:123

[KristofferC]

Error is thrown from

julia> Meta.lower(Main, :(@noexist))
ERROR: LoadError: UndefVarError: @noexist not defined
Stacktrace:
 [1] top-level scope
 [2] lower(::Module, ::Any) at ./meta.jl:68
 [3] top-level scope at none:0
in expression starting at REPL[9]:1

Should we bail on macros?

diff --git a/stdlib/REPL/src/REPLCompletions.jl b/stdlib/REPL/src/REPLCompletions.jl
index fc84bd2b8d..f9dc16805e 100644
--- a/stdlib/REPL/src/REPLCompletions.jl
+++ b/stdlib/REPL/src/REPLCompletions.jl
@@ -419,6 +419,7 @@ function get_type(sym::Expr, fn::Module)
     # try to analyze nests of calls. if this fails, try using the expanded form.
     val, found = try_get_type(sym, fn)
     found && return val, found
+    sym.head == :macrocall && return (Any, false)
     return try_get_type(Meta.lower(fn, sym), fn)
 end

[jaakkor2]

@nonexist. + TAB-key still errors on v"1.6.0-rc1".