accept-process-output should return non-nil value

accept-process-output should return non-nil value

[Fabrice Popineau]

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I maybe wrong in understanding the documentation, but assuming I run the
following with a very recent "emacs -q" :

(setq ispell-process
      (apply 'start-process
             "ispell" nil
             "/usr/bin/hunspell"
            "-a"
            '("-d" "en_US" "-i" "UTF-8")))

(accept-process-output ispell-process 3)

The accept-process-output function should return a non-nil value, because
hunspell has output its banner (confirmed by associating a buffer to the
process). However I can't get it to report anything but nil, and this both
under Gnu/Linux and W32.

It doesn't work either if I set up a simple process filter.

Can someone enlighten me ?

Best regards,

-- 
Fabrice

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Re: accept-process-output should return non-nil value

[Andreas Schwab]

Fabrice Popineau <fabrice.popineau@supelec.fr> writes:

> Can someone enlighten me ?

Make sure to execute the forms together, without returning to the
command loop in between (which does an implicit accept-process-output
while waiting for keyboard input).

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Re: accept-process-output should return non-nil value

[Fabrice Popineau]

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Thanks. Yes, it makes sense, and it does work once run inside a progn.

So that doesn't explain why sometimes, with the latest changes to ispell.el
to make it more compatible with hunspell,
I got the error message :

ispell.el:3062
     (error "%s did not output version line" ispell-program-name))

Moreover, it does not happen all the time.
Need to find a way to investigate this.

Fabrice


2013/3/20 Andreas Schwab <schwab@linux-m68k.org>

> Fabrice Popineau <fabrice.popineau@supelec.fr> writes:
>
> > Can someone enlighten me ?
>
> Make sure to execute the forms together, without returning to the
> command loop in between (which does an implicit accept-process-output
> while waiting for keyboard input).
>
> Andreas.
>
> --
> Andreas Schwab, schwab@linux-m68k.org
> GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
> "And now for something completely different."
>



-- 
Fabrice Popineau
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