@macroexpand error: missing comma or ) in argument list

[tk3369]

julia> @macroexpand(
                @distributed for i in 1:5
                  true
                end
              )
ERROR: syntax: missing comma or ) in argument list

julia> versioninfo()
Julia Version 0.7.0-DEV.5121
Commit 406615f (2018-05-17 09:51 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin14.5.0)
  CPU: Intel(R) Core(TM) i5-4258U CPU @ 2.40GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.0 (ORCJIT, haswell)
Environment:
  JULIA_NUM_THREADS = 4

[JeffBezanson]

This is due to #18650 and its fix. We decided that it's more useful to pass generators as arguments inside parentheses than block-style for loops, so the parsing was changed to favor them.

@macroexpand @distributed for ... or @macroexpand begin ... end should work.