bug#24439: ispell.el; cutom setting `ispell-library-directory'; patch

["Laimonas Vėbra" <laimonas.vebra@yahoo.com>]

Eli Zaretskii wrote:

 > What I meant specifically is to use the -d switch to tell ispell where
 > to look for the dictionaries.  The -d switch accepts absolute file
 > names, AFAIR, and will not try to look in ispell-library-directory for
 > such absolute file names.

-d doesn't work, because of this code:

;; Include if the dictionary is in the library, or dir not defined.
(if (and
name
;; For Aspell, we already know which dictionaries exist.
(or ispell-really-aspell
;; Include all dictionaries if lib directory not known.
;; Same for Hunspell, where ispell-library-directory is nil.
(not ispell-library-directory)
(file-exists-p (concat ispell-library-directory
"/" dict-bname ".hash"))
(file-exists-p (concat ispell-library-directory
"/" dict-bname ".has"))))
(push name dict-list)))


 > If that doesn't help, then maybe I don't understand what problem,
 > exactly, are you trying to solve.  What bad things happen if you don't
 > change the value of ispell-library-directory from its default?

Then it's not possible to add custom dictionaries (when using cygwin 
ispell) or dictionaries from other directory, than 
`ispell-library-directory', because they are ommited by 
`ispell-valid-dictionary-alist'.

 > Even if the dictionaries that are arguments of the -d switch are given
 > as absolute file names?  If so, maybe that's the problem that needs
 > fixing.

Yes.