Testing the return value of call-process

[Jesper Harder]

In GNU Emacs 21.3.50.79 (i686-pc-linux-gnu, GTK+ Version 2.0.2)

The return value of `call-process' can be a number or a string.  This
means that `=' or `zerop' shouldn't be used to test it, because it
will result in an error if the value happens to be a string.

Below is a patch that fixes some cases.

2003-12-07  Jesper Harder  <address@hidden>

        * progmodes/idlwave.el (idlwave-make-tags): Don't use = or zerop
        to test the return value of call-process, because it can be a
        string.

        * textmodes/flyspell.el (flyspell-large-region): do.

        * progmodes/make-mode.el (makefile-query-by-make-minus-q): do.

        * emulation/viper-util.el (viper-glob-unix-files): do.

        * emacs-lisp/shadow.el (shadow-same-file-or-nonexistent): do.

        * man.el (Man-init-defvars): do.

        * jka-compr.el (jka-compr-call-process): do.

        * files.el (get-free-disk-space,insert-directory): do.

        * ediff-ptch.el (ediff-test-patch-utility): do.

        * ediff-diff.el (ediff-test-utility): do.

        * dired-aux.el (dired-check-process): do.

        * mail/sendmail.el (sendmail-send-it): do.

callproc.diff
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