From: msiegel@... Date: 2018-04-17T13:35:49+00:00 Subject: [ruby-core:86558] [Ruby trunk Feature#14684] IRB swallows exceptions Issue #14684 has been updated by RubyBugs (A Nonymous). @nobu: Would it be possible to back-port this to Ruby 2.3, 2.4, and 2.5? Or, would you be willing to review patches from me to back-port this? ---------------------------------------- Feature #14684: IRB swallows exceptions https://bugs.ruby-lang.org/issues/14684#change-71500 * Author: RubyBugs (A Nonymous) * Status: Closed * Priority: Normal * Assignee: keiju (Keiju Ishitsuka) * Target version: ---------------------------------------- # Summary IRB swallows exceptions, doesn't provide programatic access to raised exception in session. ## Details On Ruby 2.3.4, we find it surprising that exceptions in IRB are swallowed, and are not accessible at the two locations we checked: 1. In the global variable for most recent exception `$!` 2. In the return value of evaluating the expression `_` Consider this IRB session: ~~~ ruby def method_which_raises 1/0 end method_which_raises # ZeroDivisionError: divided by 0 # from (irb):10:in `/' # from (irb):10:in `method_which_raises' # from (irb):13 # from /Users/marcsiegel/.rubies/ruby-2.3.4/bin/irb:11:in `
' ~~~ ### Observed Neither `_` nor `$!` give access to the raised exception, so that during development or debugging, one could dig further into what had occurred. ### Expected Either `_` or `$!` would give programmatic access in IRB to an exception -- https://bugs.ruby-lang.org/ Unsubscribe: