Cannot be used in a trap

[jrmhaig]

This gem cannot be used in Signal trap. For example run this:

require 'unicode/display_width'

Signal.trap('USR1') do
  puts Unicode::DisplayWidth.of("⚀")
end

puts Process.pid
sleep(60)

and then execute:

kill -USR1 <process id>

This crashes with the error:

unicode-display_width/lib/unicode/display_width.rb:6:in `require_relative': can't be called from trap context (ThreadError)

I would suggest moving the require_relative to the top so that the file is loaded at the start rather than dynamically.

[janlelis]

Thank you for the bug report. The dynamic loading of the index dates back to when the index size was rather big, which is not the case anymore. So I followed your suggestion and released 1.1.1, which loads the index at start-up time.