Problems with external gems on Windows

[rockyallen]

I want to use asciidoctor-bibtex with asciidoctor-ant, so I have put the dependencies in a local folder and tried:

 <asciidoctor:convert ...
    safemode="unsafe"
    gemPaths="${basedir}/gems/">
    <attribute key="bibtex-file" value="${basedir}/shared/references.bib"/>
    <require name="bibtex-ruby-4.4.7"/>
    <require name="citeproc-1.0.9"/>
    <require name="citeproc-ruby-1.1.10"/>
    <require name="csl-1.5.0"/>
    <require name="csl-styles-1.0.1.8"/>
    <require name="latex-decode-0.3.1"/>
    <require name="namae-1.0.1"/>
    <require name="asciidoctor-bibtex-0.3.1"/>
  </asciidoctor:convert>

Which gives:

org.jruby.exceptions.RaiseException: (LoadError) no such file to load -- bibtex-ruby-4.4.7
at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:961)
at RUBY.require(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:55)
at RUBY.

(<script>:1)

I tried a few variations with the same result:

• gempaths with and without the terminal /
• leaving the version numbers off the require lines
• giving the full file names in the require lines
• putting the gem files explicitly into gempaths (like a Java classapth)

Any thoughts?

This is probably due to me not knowing Ruby. A working example in the manual might help.

[rockyallen]

Windows 7 professional v 6.1 build 7601 SP1
Java 1.8.0_181
asciidoctor-ant-1.6.0-alpha.5.jar