JezK
Edit File: local_interface.rb
# frozen_string_literal: true module Byebug # # Interface class for standard byebug use. # class LocalInterface < Interface EOF_ALIAS = "continue" def initialize super() @input = $stdin @output = $stdout @error = $stderr end # # Reads a single line of input using Readline. If Ctrl-D is pressed, it # returns "continue", meaning that program's execution will go on. # # @param prompt Prompt to be displayed. # def readline(prompt) with_repl_like_sigint { without_readline_completion { Readline.readline(prompt) || EOF_ALIAS } } end # # Yields the block handling Ctrl-C the following way: if pressed while # waiting for input, the line is reset to only the prompt and we ask for # input again. # # @note Any external 'INT' traps are overriden during this method. # def with_repl_like_sigint orig_handler = trap("INT") { raise Interrupt } yield rescue Interrupt puts("^C") retry ensure trap("INT", orig_handler) end # # Disable any Readline completion procs. # # Other gems, for example, IRB could've installed completion procs that are # dependent on them being loaded. Disable those while byebug is the REPL # making use of Readline. # def without_readline_completion orig_completion = Readline.completion_proc return yield unless orig_completion begin Readline.completion_proc = ->(_) { nil } yield ensure Readline.completion_proc = orig_completion end end end end