bug#28875: 25.3.50; set-default-file-modes ignores execution bits

[Andreas Schwab <schwab@suse.de>]

On Okt 20 2017, Tino Calancha <tino.calancha@gmail.com> wrote:

> diff --git a/src/fileio.c b/src/fileio.c
> index b7df38c857..d707bfc1c6 100644
> --- a/src/fileio.c
> +++ b/src/fileio.c
> @@ -3125,7 +3125,11 @@ symbolic notation, like the `chmod' command from GNU Coreutils.  */)
>  DEFUN ("set-default-file-modes", Fset_default_file_modes, Sset_default_file_modes, 1, 1, 0,
>         doc: /* Set the file permission bits for newly created files.
>  The argument MODE should be an integer; only the low 9 bits are used.
> -This setting is inherited by subprocesses.  */)
> +This setting is inherited by subprocesses.
> +
> +Note that some functions (e.g., `write-region') ignore the execution
> +bits in MODE.  In that case you need first to create the file,
> +and then set the permisions with `set-file-modes'.  */)

The umask cannot broaden the permissions, only restrict them.  The zero
bits specify the bits that are always cleared from the mode, the one
bits leave them unmodified.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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"And now for something completely different."