Macros fail to parse literal select statement

[z64]

The following fails to parse:

macro test(c1, c2)
  select 
  when {{c1}}.receive
    # ..
  when {{c2}}.receive
    # ..
  end
end

With the error:

In test.cr:8:1

 8 | end
     ^
Error: expecting token 'EOF', not 'end'

The workaround is to do something like the following:

macro test(c1, c2)
  {{"select".id}}
  when {{c1}}.receive
    # ..
  when {{c2}}.receive
    # ..
  {{"end".id}}
end

Which will emit the correct code.

---

Crystal 0.35.1 (2020-06-21)

LLVM: 10.0.0
Default target: x86_64-pc-linux-gnu

[Blacksmoke16]

Try wrapping it in {% begin %} ... {% end %}. I.e.

macro test(c1, c2)
  {% begin %}
    select 
    when {{c1}}.receive
      # ..
    when {{c2}}.receive
      # ..
    end
  {% end %}
end