# Irb completion fails on Intel Mac with ruby-1.8.5 **URL:** \ **Category:** Ruby\ **Created:** [February 20, 2007, 7:42am UTC](https://www.ruby-forum.com/t/irb-completion-fails-on-intel-mac-with-ruby-1-8-5/86150 "2007-02-20T07:42:39Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![sauy7](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecc23a/32.png) [@sauy7](https://www.ruby-forum.com/u/sauy7)\ **Post date:** [February 20, 2007, 7:42am UTC](https://www.ruby-forum.com/t/irb-completion-fails-on-intel-mac-with-ruby-1-8-5/86150/1 "2007-02-20T07:42:39Z")
Building ruby-1.8.5-p12 on OS X 10.4 gave me an irb that supported command completion, but did not have support for vi\_editing\_mode. % irb irb(main):001:0\> Readline.vi\_editing\_mode NotImplementedError: the vi\_editing\_mode() function is unimplemented on this machine from (irb):1:in `vi\_editing\_mode’ from (irb): from :0 Which essentially meant it was stuck in emacs editing mode. I then added readline from darwin ports and rebuilt ruby: sudo port install readline … install ruby But, now I irb won’t even run: % irb dyld: NSLinkModule() error dyld: Symbol not found: \_rl\_filename\_completion\_function Referenced from: /opt/local/ruby-1.8.5-p12/lib/ruby/site\_ruby/1.8/ i686-darwin8.8.2/readline.bundle Expected in: flat namespace My next attempt will be to install the gnu readline and retry. But, while I do that, does anyone know if this is a known problem and how to fix it? Thanks Jim ---
**Author:** ![sauy7](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecc23a/32.png) [@sauy7](https://www.ruby-forum.com/u/sauy7)\ **Post date:** [February 20, 2007, 2:52pm UTC](https://www.ruby-forum.com/t/irb-completion-fails-on-intel-mac-with-ruby-1-8-5/86150/2 "2007-02-20T14:52:38Z")
Well, this has never happened to me before. I have built ruby-1.8.5 with every possible combination for readline (apple’s readline and gnu readline) and none have worked. On Feb 20, 2007, at 12:41 AM, Jim F. wrote: > My next attempt will be to install the gnu readline and retry. This failed also, generating the output: % irb dyld: NSLinkModule() error dyld: Symbol not found: \_rl\_filename\_completion\_function Referenced from: /opt/local/ruby-1.8.5-p12/lib/ruby/1.8/i686- darwin8.8.2/readline.bundle Expected in: flat namespace Trace/BPT trap Has anyone successfully built ruby with readline support on Intel Mac and have some instructions on how they did it? Thanks Jim ---
**Author:** ![sauy7](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecc23a/32.png) [@sauy7](https://www.ruby-forum.com/u/sauy7)\ **Post date:** [February 20, 2007, 6:03pm UTC](https://www.ruby-forum.com/t/irb-completion-fails-on-intel-mac-with-ruby-1-8-5/86150/3 "2007-02-20T18:03:26Z")
On Tue, Feb 20, 2007, Jim F. wrote: > Well, this has never happened to me before. > I have built ruby-1.8.5 with every possible combination > for readline (apple’s readline and gnu readline) and none > have worked. I suspect something is hosed in your macports directory. I’ve been using the macports ruby on intel since the intel procs came out and it works fine. Try uninstalling ruby, readline, and all peripheral things, doing a clean, and rebuilding them. My guess is there are some cached build files laying around that are breaking your builds. Ben ---
**Author:** ![sauy7](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecc23a/32.png) [@sauy7](https://www.ruby-forum.com/u/sauy7)\ **Post date:** [February 21, 2007, 10:17am UTC](https://www.ruby-forum.com/t/irb-completion-fails-on-intel-mac-with-ruby-1-8-5/86150/4 "2007-02-21T10:17:08Z")
I second this. I’ve got tab completion in my irb with Ruby 1.8.5 no problem. And a ton of other silliness, too, I really pimped out my irb for no reason. If you’ve been using ports from the beginning everything ports has installed will be in /opt/local, generally speaking, so you can just throw that dir in the trash and start it over again. I’ve heard readline is quirky but when I did the port install it went OK for me. Anyway, wish I could be more helpful, but what you’re trying to do is definitely possible, it’s just something probably went wrong in your ports dir like Ben’s saying.