Multiline instructions with comment marker confuses Instruction's getArguments()

[rcjsuen]

RUN a \
b #c \
d

Given that comments must start at the beginning of a line in a Dockerfile, the above RUN instruction should have four arguments in total:

1. a
2. b
3. #c
4. d

However, we are only detecting two.

import { DockerfileParser } from 'dockerfile-ast';
let content =
    "RUN a \\\n" +
    "b #c \\\n" +
    "d";
let dockerfile = DockerfileParser.parse(
    content
);
let instruction = dockerfile.getInstructions()[0];
console.log(instruction.getArguments());

[ Argument { value: 'a', range: { start: [Object], end: [Object] } },
  Argument { value: 'b', range: { start: [Object], end: [Object] } } ]

Given that it stops after b, it seems like the #c bit is confusing the parser.