"①", "だ", "占" are not entered on 0.2.8.pre.8

[tmtm]

Description

I cannot enter "①", "だ", "占" on reline 0.2.8.pre.8.

0.2.8.pre.7:

% ruby -rreline -e 'p Reline::VERSION; p Reline.readline'
"0.2.8.pre.7"
おだんご
"おだんご"
% 

0.2.8.pre.8:

% ruby -rreline -e 'p Reline::VERSION; p Reline.readline'
"0.2.8.pre.8"
お

I typed "おだんご", but I can't type anything after "お"

Terminal Emulator

xterm, xfce4-terminal

[tmtm]

on UTF-8:

①: 0xE2 0x91 0xA0
だ: 0xE3 0x81 0xA0
占: 0xE5 0x8D 0xA0

Perhaps last byte 0xA0 is considered M-SPC.

So it is fixed by commenting out this line.
https://github.com/ruby/reline/blob/v0.2.8.pre.9/lib/reline/ansi.rb#L38

[tmtm]

It worked fine after disabling compress_meta_key:

diff --git a/lib/reline/key_stroke.rb b/lib/reline/key_stroke.rb
index 16e5f69..396fa61 100644
--- a/lib/reline/key_stroke.rb
+++ b/lib/reline/key_stroke.rb
@@ -4,6 +4,7 @@ class Reline::KeyStroke
   end
 
   def compress_meta_key(ary)
+    return ary
     ary.inject([]) { |result, key|
       if result.size > 0 and result.last == "\e".ord
         result[result.size - 1] = Reline::Key.new(key, key | 0b10000000, true)

M-SPC is actually entered as 0x1B 0x20, so there is no need to treat 0xA0 specially.

[tmtm]

The behavior of this compress_meta_key method is similar to the behavior of convert-meta=on in readline, but readline turns off convert-meta if the locale contains 8bit characters.

In readline(3):

convert-meta (On)
If set to On, readline will convert characters with the eighth
bit set to an ASCII key sequence by stripping the eighth bit and
prefixing it with an escape character (in effect, using escape
as the meta prefix). The default is On, but readline will set
it to Off if the locale contains eight-bit characters.

[tmtm]

If you want to make it compatible with readline:

diff --git a/lib/reline/key_stroke.rb b/lib/reline/key_stroke.rb
index 16e5f69..c1c6151 100644
--- a/lib/reline/key_stroke.rb
+++ b/lib/reline/key_stroke.rb
@@ -4,6 +4,7 @@ class Reline::KeyStroke
   end
 
   def compress_meta_key(ary)
+    return ary unless @config.convert_meta
     ary.inject([]) { |result, key|
       if result.size > 0 and result.last == "\e".ord
         result[result.size - 1] = Reline::Key.new(key, key | 0b10000000, true)