fix: handle UTF-8 history with empty LANG env

Author: jsxs0

lib/debug/console.rb

@@ -167,7 +167,22 @@ def history_file
     def read_history_file
       if history && File.exist?(path = history_file)
         f = (['', 'DAI-', 'CHU-', 'SHO-'].map{|e| e+'KICHI'}+['KYO']).sample
-        ["#{FH}#{f}".dup] + File.readlines(path)
+        begin
+          # Force UTF-8 encoding to handle history files with Unicode characters
+          lines = File.readlines(path, encoding: 'UTF-8')
+          ["#{FH}#{f}".dup] + lines
+        rescue ArgumentError, Encoding::UndefinedConversionError
+          # If UTF-8 reading fails, try with binary mode and force UTF-8
+          begin
+            lines = File.readlines(path, mode: 'rb').map do |line|
+              line.force_encoding('UTF-8').scrub('?')
+            end
+            ["#{FH}#{f}".dup] + lines
+          rescue
+            # If all encoding attempts fail, return empty history to avoid crash
+            ["#{FH}#{f}".dup]
+          end
+        end
       else
         []
       end
@@ -191,10 +206,20 @@ def deactivate
 
         if !added_records.empty? && !path.empty?
           orig_records = read_history_file
-          open(history_file, 'w'){|f|
+          open(history_file, 'w', encoding: 'UTF-8'){|f|
             (orig_records + added_records).last(max).each{|line|
-              if !line.start_with?(FH) && !line.strip.empty?
-                f.puts line.strip
+              begin
+                # Ensure proper encoding before calling strip
+                if line.encoding != Encoding::UTF_8
+                  line = line.encode('UTF-8', invalid: :replace, undef: :replace)
+                end
+                stripped_line = line.strip
+                if !line.start_with?(FH) && !stripped_line.empty?
+                  f.puts stripped_line
+                end
+              rescue Encoding::CompatibilityError, ArgumentError
+                # Skip lines that cannot be properly encoded to avoid crashes
+                next
               end
             }
           }
@@ -204,8 +229,17 @@ def deactivate
 
     def load_history
       read_history_file.each{|line|
-        line.strip!
-        history << line unless line.empty?
+        begin
+          # Ensure proper encoding before calling strip!
+          if line.encoding != Encoding::UTF_8
+            line = line.encode('UTF-8', invalid: :replace, undef: :replace)
+          end
+          line.strip!
+          history << line unless line.empty?
+        rescue Encoding::CompatibilityError, ArgumentError
+          # Skip lines that cannot be properly encoded to avoid crashes
+          next
+        end
       } if history.empty?
       history.count
     end