[ruby/irb] Check existence of rc files in irb_info command

https://github.com/ruby/irb/commit/cdbb9dfc9f

2 files changed, 12 insertions, 9 deletions

diff --git a/lib/irb/cmd/info.rb b/lib/irb/cmd/info.rb
index ddf57b00b4..53ec71d754 100644
--- a/lib/irb/cmd/info.rb
+++ b/lib/irb/cmd/info.rb
@@ -9,12 +9,11 @@ module IRB
       def execute
         Class.new {
           def inspect
-            <<~EOM.chomp
-              Ruby version: #{RUBY_VERSION}
-              IRB version: #{IRB.version}
-              InputMethod: #{IRB.CurrentContext.io.inspect}
-              .irbrc path: #{IRB.rc_file}
-            EOM
+            str  = "Ruby version: #{RUBY_VERSION}\n"
+            str += "IRB version: #{IRB.version}\n"
+            str += "InputMethod: #{IRB.CurrentContext.io.inspect}\n"
+            str += ".irbrc path: #{IRB.rc_file}\n" if File.exist?(IRB.rc_file)
+            str
           end
           alias_method :to_s, :inspect
         }.new
diff --git a/lib/irb/input-method.rb b/lib/irb/input-method.rb
index 47fc5db84f..8f337e0eac 100644
--- a/lib/irb/input-method.rb
+++ b/lib/irb/input-method.rb
@@ -220,9 +220,11 @@ module IRB
 
       # For debug message
       def inspect
-        inputrc_path = File.expand_path(ENV['INPUTRC'] || '~/.inputrc')
         readline_impl = (defined?(Reline) && Readline == Reline) ? 'Reline' : 'ext/readline'
-        "ReadlineInputMethod with #{readline_impl} #{Readline::VERSION} and #{inputrc_path}"
+        str = "ReadlineInputMethod with #{readline_impl} #{Readline::VERSION}"
+        inputrc_path = File.expand_path(ENV['INPUTRC'] || '~/.inputrc')
+        str += " and #{inputrc_path}" if File.exist?(inputrc_path)
+        str
       end
     end
   rescue LoadError
@@ -323,12 +325,14 @@ module IRB
     # For debug message
     def inspect
       config = Reline::Config.new
+      str = "ReidlineInputMethod with Reline #{Reline::VERSION}"
       if config.respond_to?(:inputrc_path)
         inputrc_path = config.inputrc_path
       else
         inputrc_path = File.expand_path(ENV['INPUTRC'] || '~/.inputrc')
       end
-      "ReidlineInputMethod with Reline #{Reline::VERSION} and #{inputrc_path}"
+      str += " and #{inputrc_path}" if File.exist?(inputrc_path)
+      str
     end
   end
 end