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Do not enable ReadlineInputMethod for dumb terminal #10634

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4 changes: 2 additions & 2 deletions lib/irb/context.rb
Original file line number Diff line number Diff line change
Expand Up @@ -85,7 +85,7 @@ def initialize(irb, workspace = nil, input_method = nil)
@io = nil
case use_multiline?
when nil
if STDIN.tty? && IRB.conf[:PROMPT_MODE] != :INF_RUBY && !use_singleline?
if STDIN.tty? && IRB.conf[:PROMPT_MODE] != :INF_RUBY && !use_singleline? && ENV['TERM'] != 'dumb'
# Both of multiline mode and singleline mode aren't specified.
@io = RelineInputMethod.new(build_completor)
else
Expand All @@ -100,7 +100,7 @@ def initialize(irb, workspace = nil, input_method = nil)
case use_singleline?
when nil
if (defined?(ReadlineInputMethod) && STDIN.tty? &&
IRB.conf[:PROMPT_MODE] != :INF_RUBY)
IRB.conf[:PROMPT_MODE] != :INF_RUBY) && ENV['TERM'] != 'dumb'
@io = ReadlineInputMethod.new
else
@io = nil
Expand Down