Guillem Jover wrote:
[...]
In the original mail I referred to redirecting to the same file, and
not file descriptor. Anyway the problem comes with something like:
echo foo >&/dev/null
echo foo &>/dev/null
Those will fail in dash (for example), and as can bee seen from SUSv3
the only supported tokens after [n]>& are digits or '-'. Anything else
gets an unspecified behaviour. I guess the biggest problem is that
word can be anything which at the end expands to those valid tokens.
Yeah, you're right; I should have read the relevant section of SUS more
closely.
I've now implemented a check for >& or <& followed by anything other than -
or a string of digits. I've left the check for bare &> in place, as that's a
bashism regardless of the surrounding context.
Adam
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