No response after input :123

[JunichiIto]

Description

irb 1.0.0 in Ruby 2.6.6 shows error after input :123:

irb(main):001:0> :123
Traceback (most recent call last):
        3: from /Users/jnito/.rbenv/versions/2.6.6/bin/irb:23:in `<main>'
        2: from /Users/jnito/.rbenv/versions/2.6.6/bin/irb:23:in `load'
        1: from /Users/jnito/.rbenv/versions/2.6.6/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
SyntaxError ((irb):1: syntax error, unexpected tINTEGER, expecting tSTRING_CONTENT or tSTRING_DBEG or tSTRING_DVAR or tSTRING_END)

However, irb 1.3.5 in Ruby 3.0.2 shows nothing. I had to press Ctrl-C in order to continue operation:

irb(main):001:0: :123
irb(main):002:0: 
irb(main):003:0: 
^C
irb(main):001:0> 

I think the behavior in irb 1.0.0 is more interactive than irb 1.3.5, especially for Ruby newbies.

Result of irb_info

irb(main):001:0> irb_info
=> 
Ruby version: 3.0.2
IRB version: irb 1.3.5 (2021-04-03)
InputMethod: ReidlineInputMethod with Reline 0.2.5
RUBY_PLATFORM: arm64-darwin20

Terminal Emulator

Terminal.app in macOS 11.4

Setting Files

Are you using ~/.irbrc and ~/.inputrc?

No.