Percent Literals Unsupported Inside Macros

[toddsundsted]

Macros don't seem to permit percent literals aside from % and %q (including %Q, %i, %w and %x).

See https://play.crystal-lang.org/#/r/9rgn

macro foo_bar
  %q|#{test}|
end
 
test = "hello, world"
puts foo_bar

Outputs "#{test}".

While https://play.crystal-lang.org/#/r/9rgo

macro foo_bar
  %Q|#{test}|
end
 
test = "hello, world"
puts foo_bar

Prints

There was a problem expanding macro 'foo_bar'

Called macro defined in eval:1:1

Which expanded to:

 > 1 | __temp_24|#{test}|
     ^
Error: unexpected token: EOF

I'd expect it to output "hello, world".

I'm running:

$ crystal -v
Crystal 0.35.1 (2020-06-19)

LLVM: 10.0.0
Default target: x86_64-apple-macosx

[toddsundsted]

Took a swing at a PR here: #9811

[toddsundsted]

closing since #9811 has been merged