Do not override uri-rel-file-base if it's already defined
Do not override uri-rel-file-base if it's already defined

Mogztter/asciidoctor.js,Mogztter/asciidoctor.js,asciidoctor/asciidoctor.js,Mogztter/asciidoctor.js,asciidoctor/asciidoctor.js,Mogztter/asciidoctor.js,asciidoctor/asciidoctor.js,asciidoctor/asciidoctor.js,asciidoctor/asciidoctor.js,asciidoctor/asciidoctor.js,Mogztter/asciidoctor.js,Mogztter/asciidoctor.js