Which Ruby version are you using?

Apparently it appears that String#lines method was introduced in Ruby 1.8.7

I pushed a change to master branch that uses #each_line instead of #lines.

Can you pull it down and check out if it solves your problem?

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After update and re-run, not I get the following error:

/usr/bin/ruby: symbol lookup error: /home/user1/.gem/ruby/1.8/gems/rdiscount-1.6.8/lib/rdiscount.so: undefined symbol : RSTRING_LEN
parsing: 0.188596 seconds
aggregating: 0.000979 seconds
generating: 0.034888 seconds

I am a ruby noob. I installed ruby with yum on my CentOS box and followed the instructions for jsduck

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Could you just run:

ruby -v

to determine which version of Ruby you have?

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ruby 1.8.6 (2010-02-05 patchlevel 399) [i386-linux]

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Anyway, it seems to be an rdiscount error.

You could try running rdiscount on JSDuck readme file to see if it works on its own:

rdiscount README.md

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But I seriously suggest you try upgrading to Ruby 1.8.7 because it's almost 3 years old now (released at 2008).

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fixed the problem following:
http://www.phase2.net/2009/06/gitorious-setup-rstring_len-in-rdiscount/

Thank you for the quick fix/push

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