java -jar jruby-complete.jar -S irb doesn't work anymore

[rdp]

viz https://www.ruby-forum.com/topic/5650169#new
FWIW, the last version that worked was 1.7.13 AFAICT

[mkristian]

I did read this on the user list but it worked when finding irb on the file-system. now I found it the failure. thanx for reporting.

[mkristian]

spaces in filename or path will still fail the execution of irb

[mkristian]

more ways to fail it:

java -Djruby.home=classpath:/META-INF/jruby.home -jar maven/jruby-complete/target/jruby-complete-1.7.17-SNAPSHOT.jar -S irb
Channels.java:67:in `checkNotNull': java.lang.NullPointerException: "in" is null!
    from Channels.java:347:in `newChannel'
    from ChannelDescriptor.java:780:in `open'
    from RubyFile.java:1283:in `sysopen'
    from RubyFile.java:1263:in `sysopenInternal19'

or

$ java -Djruby.home=uri:classloader://META-INF/jruby.home -jar maven/jruby-complete/target/jruby-complete-1.7.17-SNAPSHOT.jar -S irb
Errno::ENOENT: No such file or directory - uri:classloader:/META-INF/jruby.home/lib/ruby/1.9/site_ruby/irb/lc/en_GB.UTF-8/encoding_aliases.rb
   initialize at org/jruby/RubyFile.java:361
         open at org/jruby/RubyIO.java:1177
         open at uri:classloader:/META-INF/jruby.home/lib/ruby/1.9/irb/magic-file.rb:7
    real_load at uri:classloader:/META-INF/jruby.home/lib/ruby/1.9/irb/locale.rb:130
         load at uri:classloader:/META-INF/jruby.home/lib/ruby/1.9/irb/locale.rb:110
   initialize at uri:classloader:/META-INF/jruby.home/lib/ruby/1.9/irb/locale.rb:32
  init_config at uri:classloader:/META-INF/jruby.home/lib/ruby/1.9/irb/init.rb:114
        setup at uri:classloader:/META-INF/jruby.home/lib/ruby/1.9/irb/init.rb:16
        start at uri:classloader:/META-INF/jruby.home/lib/ruby/1.9/irb.rb:53
       (root) at uri:classloader:/META-INF/jruby.home/bin/jirb:13

or

$ java -Djruby.native.enabled=false -jar maven/jruby-complete/target/jruby-complete-1.7.17-SNAPSHOT.jar -S irb
Errno::ENOENT: No such file or directory - /home/christian/projects/active/maven/jruby17/maven/jruby-complete/target/jruby-complete-1.7.17-SNAPSHOT.jar!/META-INF/jruby.home/lib/ruby/1.9/site_ruby/irb/lc/en_GB.UTF-8/encoding_aliases.rb
            readable? at org/jruby/RubyFileTest.java:202
          search_file at /home/christian/projects/active/maven/jruby17/maven/jruby-complete/target/jruby-complete-1.7.17-SNAPSHOT.jar!/META-INF/jruby.home/lib/ruby/1.9/irb/locale.rb:148
                 each at org/jruby/RubyArray.java:1613
          search_file at /home/christian/projects/active/maven/jruby17/maven/jruby-complete/target/jruby-complete-1.7.17-SNAPSHOT.jar!/META-INF/jruby.home/lib/ruby/1.9/irb/locale.rb:146

[headius]

So it looks like this logic is trying to read in and evaluate a file based on IRB's FILE location. Unfortuantely that location is inside the jar and File.open does not support URLs.

We probably want to patch IRB to gracefully fail if it can't load this file, or come up with a way it can be loaded without this breakage.

[mkristian]

the particular thing here is when native is enabled this works:

$ java -Djruby.native.enabled=true -jar maven/jruby-complete/target/jruby-complete-1.7.17-SNAPSHOT.jar -S irb

the first fix was:
88e9f75
and the regexp could be extended to cope with spaces in the path and we could close the issue.

but it feels kind of odd that there is no way to just compare two pathes, and find out whether they belong to the same physical file, without doing uri normalization see also: #2021

@headius FYI File.open( "classpath:/my.rb", 'r' ) do ... does work quite OK dito File.open( "classpath:/my.rb", 'r' ) do ... , etc