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bug#9653: 24.0.50; `ucs-names' - Why all of the ("" . XXX) entries?


From: Thierry Volpiatto
Subject: bug#9653: 24.0.50; `ucs-names' - Why all of the ("" . XXX) entries?
Date: Sun, 02 Oct 2011 20:09:08 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.90 (gnu/linux)

"Drew Adams" <address@hidden> writes:

> AFAIK, there is no more recent Windows binary available than this one,
> so reporting this here.  (When will there be a Windows pretest binary?)
>
> In GNU Emacs 24.0.50.1 (i386-mingw-nt5.1.2600)
>  of 2011-09-19 on 3249CTO
> Windowing system distributor `Microsoft Corp.', version 5.1.2600
> configured using `configure --with-gcc (4.5) --no-opt'
>  
>
> Is this a bug?  There are lots of entries in `ucs-names' that have "" as
> the car.  Shouldn't these be filtered out?  If not, what is their
> significance (and use)?
>
> The doc is very lightweight: "Alist of cached (CHAR-NAME . CHAR-CODE)
> pairs.", for the var, and "Return alist of (CHAR-NAME . CHAR-CODE)
> pairs cached in `ucs-names', for the function.
>  
> How can "" be a CHAR-NAME, i.e., the name of any character?
>  
> Please fix this, if a code bug, or document what this is about, if a doc
> bug.
Right, same here, i must filter empty entries.
Also: 
- Entries with empty cdr.
- Existing entries not ucs-insert/able.
- Sometimes character are missing for existing categories
(e.g MATHEMATICAL DOUBLE-STRUCK CAPITAL C:) doesn't exist.

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