Julia: Weird error with `$var` and interpolation

[thofma]

julia> function build_variable(var::Expr)
         throw(error("Expected $var to be a variable name"))
       end
ERROR: syntax: missing comma or ) in argument list
Stacktrace:
 [1] top-level scope at none:0

julia> versioninfo()
Julia Version 1.3.0-rc1.0
Commit 768b25f6a8 (2019-08-18 00:04 UTC)
Platform Info:
  OS: Linux (x86_64-pc-linux-gnu)
  CPU: Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, ivybridge)

[fredrikekre]

https://github.com/JuliaLang/julia/pull/32408#issuecomment-522168938 and #32948

[thofma]

So will this be fixed in the final 1.3 release? By fixed I mean working as in 1.0 and 1.1.

[KristofferC]

Yes it will be fixed.

[c42f]

Absolutely going to be fixed. By reverting #32408 if necessary, though I think we can save it.