Stack trace on early Ctrl-C

[Rob Donnelly]

If SIGINT (Ctrl-C) is sent immediately after invoking jobrnr, a stacktrace is printed. Adding rescue Interrupt in Jobrnr::Application::run will handle any SIGINTs received before getting to Jobrnr::Job::Dispatch::trap_ctrl_c but it will still miss any SIGINTs received before then. Is it possible to capture all SIGINTS?

Error

> jobrnr
^CTraceback (most recent call last):
        12: from <internal:gem_prelude>:1:in `<internal:gem_prelude>'
        11: from <internal:gem_prelude>:1:in `require'
        10: from .../ruby/2.7.2/lib/ruby/2.7.0/rubygems.rb:1438:in `<top (required)>'
         9: from .../ruby/2.7.2/lib/ruby/2.7.0/rubygems/specification.rb:867:in `load_defaults'
...
         1: from .../ruby/2.7.2/lib/ruby/2.7.0/rubygems/specification.rb:1114:in `load'
.../ruby/2.7.2/lib/ruby/2.7.0/rubygems/specification.rb:1114:in `file?': Interrupt

Possible Solution

Wrap the entire application in a begin/rescue block.

diff --git a/bin/jobrnr b/bin/jobrnr
index 73e823b..a48013c 100755
--- a/bin/jobrnr
+++ b/bin/jobrnr
@@ -1,6 +1,11 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: true

-require_relative "../lib/jobrnr"
+begin
+  require_relative "../lib/jobrnr"

-exit Jobrnr::Application.new(ARGV).run
+  exit Jobrnr::Application.new(ARGV).run
+rescue Interrupt
+  Jobrnr::Log.error "Received SIGINT"
+  exit 130
+end