diff options
Diffstat (limited to 'lib/irb/context.rb')
| -rw-r--r-- | lib/irb/context.rb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/irb/context.rb b/lib/irb/context.rb index f529787bae..94def5fc6a 100644 --- a/lib/irb/context.rb +++ b/lib/irb/context.rb @@ -82,6 +82,12 @@ module IRB case use_multiline? when nil if STDIN.tty? && IRB.conf[:PROMPT_MODE] != :INF_RUBY && !use_singleline? + # Both of multiline mode and singleline mode aren't specified. + puts <<~EOM + This version of IRB is drastically different from the previous version. + If you hit any issues, you can use "irb --legacy" to run the old version. + If you want to just erase this message, please use "irb --multiline". + EOM @io = ReidlineInputMethod.new else @io = nil |