On 2/3/22 9:46 PM, Alex fxmbsw7 Ratchev wrote:
The case I had in question with the question about $( a b ) was this
one...
cat <<$( a b )
hello
$( a b )
i think you are mis understanding the differencies here between shell
expression parsing, and a rather data only part which applies here
that is, <<{word} is a word and is threated as flat text word, in further
eof recognition, applying advanced expressions here seems me like an early bug
It is a WORD (in the POSIX grammar sense), and so recursive parsing and
alias expansion are required as soon as you hit the `$('. It's what you
do with the word once you have it that matters.
imho the example above should have resulted in error ')'
it would execute cat a b ) with hello till $( then rather \n and a b )
again, useless
especially the $( wasnt even quoted
What can this possibly mean? What semantic interpretation would lead you
to the conclusion that you should stop reading the token after a `$(' in
this one specific case?
chet didnt you say there were no bugs ? =)
I didn't, but how is that relevant here?
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU c...@case.edu http://tiswww.cwru.edu/~chet/
