Bug #4232: unexpected behavior of '#{}' in irb

• Status: Closed
• Assignee: keiju (Keiju Ishitsuka)
• Target version: 2.0.0
• ruby -v: ruby 1.9.3dev (2010-12-31 trunk 30439) [i386-mswin32_90]

[phasis68 (Heesob Park)]

=begin
In Ruby 1.9.x,

C:\work>irb
irb(main):001:0> a = '#{%}'
irb(main):002:0"

C:\work>irb
irb(main):001:0> a = '#{#}'
irb(main):002:0>

In Ruby 1.8.6,

C:\work>irb
irb(main):001:0> a = '#{%}'
=> "#{%}"
irb(main):002:0>

C:\work>irb
irb(main):001:0> a = '#{#}'
=> "#{#}"
irb(main):002:0>

Here is a patch:

--- ruby-lex.rb 2011-01-05 15:05:31.000000000 +0900
+++ ruby-lex.rb.new 2011-01-05 15:05:08.000000000 +0900
@@ -1046,7 +1046,7 @@
while ch = getc
if @quoted == ch and nest == 0
break

•   elsif ch == "#" and peek(0) == "{"
  

•   elsif @ltype != "'" && ch == "#" and peek(0) == "{"
      identify_string_dvar
    elsif @ltype != "'" && @ltype != "]" && @ltype != ":" and ch == "#"
      subtype = true
  

=end

[yugui (Yuki Sonoda)]

• Assignee set to keiju (Keiju Ishitsuka)

=begin

=end

[shyouhei (Shyouhei Urabe)]

• Status changed from Open to Assigned

[keiju (Keiju Ishitsuka)]

• Status changed from Assigned to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r32257.
Heesob, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• lib/irb/ruby-lex.rb: fix [Bug #4232].