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Re: Expansion of unquoted special parameter $@ when used as the word for
Re: Expansion of unquoted special parameter $@ when used as the word for a HERE STRING
Wed, 6 Nov 2019 16:14:39 -0500
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On 11/5/19 5:15 PM, Robin A. Meade wrote:
OK, thanks. I'll avoid unquoted $* and $@ in my scripts.
However, I was testing the validity of this sentence:
"In contexts where word splitting is not performed, this expands to a
single word with each positional parameter separated by a space."
That statement appears to be true for variable assignments:
set -- a 'b c'
# ^ word splitting does not occur in this context
a b c
But not for here strings:
cat <<< $@;
# ^ again a context in which word splitting does not occur
a b c
Thanks for the report and discussion.
This is technically undefined, as explained in previous messages in this
thread, but I agree that it should be consistent between these two
contexts. I'll fix here-string expansion to make that work the same as
on the rhs of assignment statements.
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU address@hidden http://tiswww.cwru.edu/~chet/