copy-to-clipboard-inline-macro causes Asciidoctor to fail when document contains non-Ascii chars on Windows

[abelsromero]

Issue Overview

When converting a UTF-8 file that contains non-Ascii characters (e.g: ¿, á, é) I get the error:

org.jruby.exceptions.RaiseException: (Encoding::CompatibilityError) incompatible encodings: UTF-8 and CP850 

Using asciidoctor-maven-plugin, document works without the extension, and I double-check the files are in UTF-8.

Steps To Reproduce

1. Create a simple AsciiDoc document

= Título

Maravilloso documento, ¿verdad?

== Sub-sección

Dedicada a Ramón.

2. Convert with the extension

Additional Information

Solution found.

The issue seems to be in Document::read_asset here, but I'd like to check before filing an issue to main project.

For some reason, the Javascript string is encoded in Windows format and Asciidoctor triggers the issue when the string is inserted in a document with non-Ascii chars.

Forcing content.chomp to be UTF-8 with content.chomp.force_encoding("UTF-8") fixes the issue.
Calling read_asset with :normlize => true (ref) did nothing.