String literal cannot produce a single backslash `\`

[darinspivey]

Problem

According to the documentation, a string literal of s'\\' should produce a single backslash, given that you have to escape backslash as a special character. The result of this should be "\\". Something seems off in the lexer where the escaped backslash is being literally interpreted, and the output becomes "\\\\".

Example

.nope = s'\\' --> "\\\\"

Version

Tested on the latest version as of this writing, version = "0.19.0"