[Bug] Cannot escape backslash in string literal, if it is the last character

[mks-h]

Trying to print \ as the last character in a string literal, but compiler errors out with "Unclosed string literal".

This happens when I try to escape backslash with another backslash, no matter how many times. All of the following commands will fail to compile:

echo "Hi \\"
echo "Hi \\\"
echo "Hi \\\\"

But if you close them with another double quote, then it ignores the first quote, but starts another multiline string with the second one, and does something weird:

echo "Hi \\""
echo "Hi \\\""
echo "Hi \\\\""

Result:

Hi \
echo Hi \
Hi \"

[Ph0enixKM]

Duplicate of amber-lang/heraclitus#48