Robert Elz <[email protected]> wrote:
|This is the one that in one of the messages I just sent I said
|"not previously posted here" ... When there is a leading/trailing '
|it will be slower...
|
|Aside: to be really correct, without "local" it should really clean up
|the vars (in a trap) in case it is interrupted by a signal, but I don't
|think I will bother... "local" is just so much better!
|
|kre
|
|quote() {
...
So this version really works, and i will keep it in my pocket of
jewels. In turn, this reveals problems in many shells which are
in use, given the input string
x 'a \ b' "foo'" "\\'b\\a\\r\\" Aä
(to get around missing support for $''). Whereas my MUA with all
of its problems naturally gets it right
vpospar set x 'a \ b' "foo'" "\\'b\\a\\r\\" Aä
echo "$#: <${1}><${2}><${3}><$4><$5>"
vput vpospar x quote; eval vpospar set ${x}
echo $#: <${1}><${2}><${3}><$4><$5>
echo $x
xit
5: <x><a \ b><foo'><\'b\a\r\><Aä>
5: <x><a \ b><foo'><\'b\a\r\><Aä>
x 'a \ b' $'foo\'' $'\\\'b\\a\\r\\' $'A\u00E4'
in the shells with
[ "$1" = robert ] && quote=robert_quote
[ "$1" = stephane ] && quote=stephane_quote
[ -z "$quote" ] && { echo >&2 'robert or stephane'; exit 1; }
set -- x 'a \ b' "foo'" "\\'b\\a\\r\\" Aä
echo "$#: <${1}><${2}><${3}><$4><$5>"
saved_parameters=$($quote "$@")
eval "set -- $saved_parameters"
echo "$#: <${1}><${2}><${3}><$4><$5>"
where robert_quote is indeed (thanks, Robert Elz!)
robert_quote() {
j=0
for i
do
[ $j -gt 0 ] && printf ' '
j=$((j + 1))
robert__quote "$i"
done
}
then of the tested only bash gets it right!
$ for i in dash mksh bash; do \
echo $i;$i t.sh robert; $i t.sh stephane; \
done
dash
\><Aä><a \ b><foo'><\'b
\><Aä><a \ b><foo'><\'b
\><Aä><a \ b><foo'><\'b
\><Aä><a \ b><foo'><\'b
mksh
\><Aä><a \ b><foo'><\'b
\><Aä><a \ b><foo'><\'b
\><Aä><a \ b><foo'><\'b
\><Aä><a \ b><foo'><\'b
bash
5: <x><a \ b><foo'><\'b\a\r\><Aä>
5: <x><a \ b><foo'><\'b\a\r\><Aä>
5: <x><a \ b><foo'><\'b\a\r\><Aä>
5: <x><a \ b><foo'><\'b\a\r\><Aä>
--steffen
|
|Ralph says i must not use signatures which spread the light!
