Ruby code in code element derails slimrb if it contains a string with an escaped expression

[n8chz]

I'm using Slim 4.1.0 with ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux-gnu]

If test.slim is as follows:

doctype html
html lang="en"
  head
    meta charset="utf-8"
    title Test
  body
    pre
      code
        | #!/usr/bin/ruby
          foo = 1
          puts "This is  test ##{foo}"

and I run
slimrb test.slim test.html
I get the error message

NameError: undefined local variable or method `foo' for #<Object:0x0000563516d4ff70>
  Use --trace for backtrace.

When I use --trace for backtrace, I get

Traceback (most recent call last):
	8: from /usr/local/bin/slimrb:23:in `<main>'
	7: from /usr/local/bin/slimrb:23:in `load'
	6: from /var/lib/gems/2.7.0/gems/slim-4.1.0/bin/slimrb:6:in `<top (required)>'
	5: from /var/lib/gems/2.7.0/gems/slim-4.1.0/lib/slim/command.rb:19:in `run'
	4: from /var/lib/gems/2.7.0/gems/slim-4.1.0/lib/slim/command.rb:110:in `process'
	3: from /var/lib/gems/2.7.0/gems/tilt-2.0.10/lib/tilt/template.rb:109:in `render'
	2: from /var/lib/gems/2.7.0/gems/tilt-2.0.10/lib/tilt/template.rb:170:in `evaluate'
	1: from /var/lib/gems/2.7.0/gems/tilt-2.0.10/lib/tilt/template.rb:170:in `call'
test.slim:11:in `__tilt_560': undefined local variable or method `foo' for #<Object:0x0000555c49a926d0> (NameError)

[n8chz]

I find that I can overcome this (and display the code as expected in the resulting HTML document) by prefixing with a \ those #s used to escape expressions in strings.