bug#34272: 26.1.91 M-x flyspell-mode

[Tak Kunihiro]

> Does the patch below help?
> 
> diff --git a/lisp/textmodes/ispell.el b/lisp/textmodes/ispell.el
> index 656c9fa..237997d 100644
> --- a/lisp/textmodes/ispell.el
> +++ b/lisp/textmodes/ispell.el
> @@ -1114,12 +1114,19 @@ ispell-find-hunspell-dictionaries
>                                null-device
>                                t
>                                nil
> +                                 "-D"
> +                                 ;; Use -a to prevent Hunspell from
> +                                 ;; trying to initialize its
> +                                 ;; curses/termcap UI, which causes it
> +                                 ;; to crash or fail to start in some
> +                                 ;; MS-Windows ports.
> +                                 "-a"
>                                   ;; Hunspell 1.7.0 (and later?) won't
>                                   ;; show LOADED DICTIONARY unless
>                                   ;; there's at least one file argument
>                                   ;; on the command line.  So we feed
>                                   ;; it with the null device.
> -                              "-D" null-device)
> +                              null-device)
>           (buffer-string))
>         "[\n\r]+"
>         t))

Yes, the following block works and also `M-x flyspell' works! 

(setq ispell-program-name "c:/msys64/mingw64/bin/hunspell.exe")
(with-temp-buffer
  (ispell-call-process ispell-program-name
                       null-device
                       t
                       nil
                       "-D"
                       ;; Use -a to prevent Hunspell from
                       ;; trying to initialize its
                       ;; curses/termcap UI, which causes it
                       ;; to crash or fail to start in some
                       ;; MS-Windows ports.
                       "-a"
                       ;; Hunspell 1.7.0 (and later?) won't
                       ;; show LOADED DICTIONARY unless
                       ;; there's at least one file argument
                       ;; on the command line.  So we feed
                       ;; it with the null device.
                       null-device)
  (buffer-string))                ; => see below

"@(#) International Ispell Version 3.2.06 (but really Hunspell 1.6.2)\n
SEARCH PATH:\n
.;c:/msys64/mingw64/bin/;c:/msys64/mingw64/share/hunspell;c:/msys64/mingw64/share/myspell;c:/msys64/mingw64/share/myspell/dicts;c:/msys64;%USERPROFILE%/Application
 Data/OpenOffice.org 2/user/wordbook;c:/msys64/mingw64/share/dict/ooo;\n
AVAILABLE DICTIONARIES (path is not mandatory for -d option):\n
c:/msys64/mingw64/share/hunspell/en_AG\n
c:/msys64/mingw64/share/hunspell/en_AU\n
c:/msys64/mingw64/share/hunspell/en_BS\n
c:/msys64/mingw64/share/hunspell/en_BW\n
c:/msys64/mingw64/share/hunspell/en_BZ\n
c:/msys64/mingw64/share/hunspell/en_CA\n
c:/msys64/mingw64/share/hunspell/en_DK\n
c:/msys64/mingw64/share/hunspell/en_GB\n
c:/msys64/mingw64/share/hunspell/en_GH\n
c:/msys64/mingw64/share/hunspell/en_HK\n
c:/msys64/mingw64/share/hunspell/en_IE\n
c:/msys64/mingw64/share/hunspell/en_IN\n
c:/msys64/mingw64/share/hunspell/en_JM\n
c:/msys64/mingw64/share/hunspell/en_NA\n
c:/msys64/mingw64/share/hunspell/en_NG\n
c:/msys64/mingw64/share/hunspell/en_NZ\n
c:/msys64/mingw64/share/hunspell/en_PH\n
c:/msys64/mingw64/share/hunspell/en_SG\n
c:/msys64/mingw64/share/hunspell/en_TT\n
c:/msys64/mingw64/share/hunspell/en_US\n
c:/msys64/mingw64/share/hunspell/en_ZA\n
c:/msys64/mingw64/share/hunspell/en_ZW\n
c:/msys64/mingw64/share/myspell/dicts/en_AG\n
c:/msys64/mingw64/share/myspell/dicts/en_AU\n
c:/msys64/mingw64/share/myspell/dicts/en_BS\n
c:/msys64/mingw64/share/myspell/dicts/en_BW\n
c:/msys64/mingw64/share/myspell/dicts/en_BZ\n
c:/msys64/mingw64/share/myspell/dicts/en_CA\n
c:/msys64/mingw64/share/myspell/dicts/en_DK\n
c:/msys64/mingw64/share/myspell/dicts/en_GB\n
c:/msys64/mingw64/share/myspell/dicts/en_GH\n
c:/msys64/mingw64/share/myspell/dicts/en_HK\n
c:/msys64/mingw64/share/myspell/dicts/en_IE\n
c:/msys64/mingw64/share/myspell/dicts/en_IN\n
c:/msys64/mingw64/share/myspell/dicts/en_JM\n
c:/msys64/mingw64/share/myspell/dicts/en_NA\n
c:/msys64/mingw64/share/myspell/dicts/en_NG\n
c:/msys64/mingw64/share/myspell/dicts/en_NZ\n
c:/msys64/mingw64/share/myspell/dicts/en_PH\n
c:/msys64/mingw64/share/myspell/dicts/en_SG\n
c:/msys64/mingw64/share/myspell/dicts/en_TT\n
c:/msys64/mingw64/share/myspell/dicts/en_US\n
c:/msys64/mingw64/share/myspell/dicts/en_ZA\n
c:/msys64/mingw64/share/myspell/dicts/en_ZW\n
LOADED DICTIONARY:\n
c:/msys64/mingw64/share/hunspell/en_US.aff\n
c:/msys64/mingw64/share/hunspell/en_US.dic\n
"