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#ruby - 22 December 2018

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[00:01:16] cthulchu_: it's kinda sad that Ruby doesn't have the concept of primitives
[00:01:30] cthulchu_: One one hans I'm kinda grateful for the fact that everything is an object
[00:01:51] cthulchu_: on the other hand, it's uncomfy to not being able to pass arguments by reference
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[12:34:15] za1b1tsu: When using the ruby readline library, there was a key combination to give multiline input
[12:34:29] za1b1tsu: I forgot and can't find it with google
[12:34:45] za1b1tsu: basically you start a newline but it does not send the input
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[12:44:35] phaul: za1b1tsu: google site: https://irclog.whitequark.org/ruby za1b1tsu readline
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[12:52:32] za1b1tsu: phaul thank you sir, I did not know that this history is kept like this
[12:53:07] phaul: yeah, we have to be careful about what we say ;)
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[12:55:48] za1b1tsu: I don't even know I found out initialy
[12:55:52] za1b1tsu: I googled like crazt
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[16:47:24] isene: Because of this (https://bugs.launchpad.net/ubuntu/+source/ruby-defaults/+bug/1809500) I need to downgrade from Ruby 2.5.1 to maybe 2.2 or even 1.9 for my whole system (Ubuntu 18.10). How can I do that in the best possible way?
[16:49:16] Zarthus: isene: it's nonreproducable on 18.04, prod isn't an lts?
[16:50:55] havenwood: isene: Brightbox maintains multiple Ruby version packages for Ubuntu: https://www.brightbox.com/docs/ruby/ubuntu/
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[16:53:32] havenwood: isene: You can alternatively just build Ruby yourself. There are handy tools to make that easy: https://ryanbigg.com/2014/10/ubuntu-ruby-ruby-install-chruby-and-you
[16:54:25] isene: Zarthus: Yes, it worked fine in 18.04
[16:56:47] isene: So, I should remove my Ruby installation for my 18.10 system (which can only be Ruby 2.5.1) and download e.g. 2.2 and install that manually, I guess? But I wonder if that will break anything else...
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[16:57:38] havenwood: isene: You don't need to remove the system Ruby to install another.
[16:58:23] isene: But how do I ensure my script will confine itself (with my imap calls) to e.g. 2.2?
[16:58:50] havenwood: isene: You can use ruby-switch with the Brightbox packages or chruby if you build it yourself.
[17:00:00] havenwood: isene: All chruby really does is put the Ruby you select and its gems in front of your PATH and set other env vars like GEM_HOME and GEM_PATHS.
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[17:01:28] isene: havenwood: Let's say I go with Brightbox packages (seems easy), what is ruby-switch? My script is core Ruby with no gem dependencies
[17:02:12] havenwood: isene: sudo apt-get install ruby-switch && sudo ruby-switch --set ruby2.4.4
[17:02:21] havenwood: isene: ^ for example
[17:02:38] havenwood: isene: see: https://www.brightbox.com/docs/ruby/ubuntu#switching-the-default-ruby-version
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[17:06:50] isene: Thanks, havenwood. Appreciate it :-)
[17:09:42] isene: I see that 2.5.1 is also the version on Ubuntu 18.04... :-O That's odd since the bug wasn't there in 18.04 - but it is in 18.10. I wonder what changed...
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[17:14:19] isene: Err:8 http://ppa.launchpad.net/brightbox/ruby-ng/ubuntu cosmic Release
[17:14:21] isene: 404 Not Found [IP: 91.189.95.83 80]
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[21:54:51] isene: havenwood: This is getting weirder by the minute - the bug (https://bugs.launchpad.net/ubuntu/+source/ruby-defaults/+bug/1809500) seems to actually not be Ruby specific - because I purged my Ruby 2.5.1 that comes with Ubuntu 18.10 and installed 2.5.3 and 2.4.5 and tried both - and they both show up with the bug. So, my conclusion must be that there is something else wrong in 18.10. But WTF?
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