Re: write-file could carry permissions

["Ehud Karni" <ehud@unix.mvs.co.il>]

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On 13 May 2003 00:39:27 -0400, Thien-Thi Nguyen <ttn@glug.org> wrote:
> 
>    maybe Emacs should always set the executable bit when you edit
>    a file in Shell Script mode.  Is there any reason that would be
>    bad?
> 
> if you write a file in a directory where some cron-driven script
> walker sees it, it is better if that file is not executable unless
> you explicitly make it so.  (principle of least surprise according
> to the sysadmin.)
> 
> on the other hand, there's no problem w/ emacs providing a
> convenient way to effect this decision (e.g., a write-file hook
> subject to y-or-n-p).

There is an autoloaded function supplied in current emacs (21.3) that
does that - `executable-make-buffer-file-executable-if-script-p' in 
progmode/executable.el. Just add it to `after-save-hook'.

BTW. Beside Thien-Thi reservation about cron confusion, there is also
the problem of trying to change file mode on remote system (ange-ftp)
that usually fails (remote chmod not supported).

Ehud.


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