Re: Euro sign bound, Pound sign not bound. (Bug?)

Re: Euro sign bound, Pound sign not bound. (Bug?)

[Richard Stallman]

    The following strikes me as strange:

    (key-binding "=80") ;; (Euro character) returns 'self-insert-command, =
    but
    (key-binding "=A3") ;; (Pound character) returns nil

    Is this a bug?

Maybe.  Can you type these two characters on your keyboard?
If so, what happens?  Do they insert themselves?

I note that these two characters came out in different character sets
in my Rmail buffer:

  character: £ (2211, #o4243, #x8a3, U+00A3)

  character: € (342604, #o1235114, #x53a4c, U+20AC)

I am not sure why that happened.  Handa, can you clear this up?

Re: Euro sign bound, Pound sign not bound. (Bug?)

[David Reitter]

On 4 May 2007, at 22:17, Richard Stallman wrote:

>     The following strikes me as strange:
>
>     (key-binding "=80") ;; (Euro character) returns 'self-insert- 
> command, =
>     but
>     (key-binding "=A3") ;; (Pound character) returns nil
>
>     Is this a bug?
>
> Maybe.  Can you type these two characters on your keyboard?

Yes.

> If so, what happens?  Do they insert themselves?

Yes.

C-h k tells me, for both of them, that they are bound to `self-insert- 
command'.

The character descriptions are as follows:


Euro sign:
   character: € (342604, #o1235114, #x53a4c, U+20AC)
     charset: mule-unicode-0100-24ff
	     (Unicode characters of the range U+0100..U+24FF.)
code point: #x74 #x4C
      syntax: w 	which means: word
buffer code: #x9C #xF4 #xF4 #xCC
   file code: not encodable by coding system nil


Pound sign:
   character: £ (2211, #o4243, #x8a3, U+00A3)
     charset: latin-iso8859-1
	     (Right-Hand Part of Latin Alphabet 1 (ISO/IEC 8859-1): ISO- 
IR-100.)
code point: #x23
      syntax: w 	which means: word
    category: l:Latin
buffer code: #x81 #xA3
   file code: not encodable by coding system nil

Re: Euro sign bound, Pound sign not bound. (Bug?)

[Eli Zaretskii]

> From: David Reitter <david.reitter@gmail.com>
> Date: Sat, 5 May 2007 07:57:59 +0100
> 
> On 4 May 2007, at 22:17, Richard Stallman wrote:
> 
> >     The following strikes me as strange:
> >
> >     (key-binding "=80") ;; (Euro character) returns 'self-insert- 
> > command, =
> >     but
> >     (key-binding "=A3") ;; (Pound character) returns nil
> >
> >     Is this a bug?
> >
> > Maybe.  Can you type these two characters on your keyboard?
> 
> Yes.
> 
> > If so, what happens?  Do they insert themselves?
> 
> Yes.
> 
> C-h k tells me, for both of them, that they are bound to `self-insert- 
> command'.

Yes, but what gets inserted is not A3 hex.  Observe:

> Pound sign:
>    character: £ (2211, #o4243, #x8a3, U+00A3)
> [...]
> buffer code: #x81 #xA3

So as you see, that character is 8A3 hex, not A3 hex.  The latter is
its Latin-1 encoding, but inside Emacs it is known under a different
code.

Re: Euro sign bound, Pound sign not bound. (Bug?)

[Richard Stallman]

    > If so, what happens?  Do they insert themselves?

    Yes.

    C-h k tells me, for both of them, that they are bound to `self-insert- 
    command'.

I guess this means there is some other map involved, which key-binding
does not check for.  Maybe key-translation-map?  Maybe a binding for a
generic character?

You could try typing the euro sign and stepping thru the code in
read_key_sequence, to see where it gets the binding from.