[3.0] UTF-8 and $@

[Stephane Chazelas]

passing arguments verbatim doesn't work if first character of
IFS is a multibyte character.

bash-3.00$ locale charmap
UTF-8
bash-3.00$ set a b c
bash-3.00$ IFS=a
bash-3.00$ printf '<%s>\n' "$@"
<a>
<b>
<c>
bash-3.00$ IFS=$(printf %b '\0303\0251')
bash-3.00$ printf '<%s>\n' "$@" | od -tc
0000000   <   a 303   b 303   c   >  \n
0000010
("$@" is one single argument!)

It's OK when IFS contains an invalid character in utf8 locale:

bash-3.00$ IFS=$(printf %b '\0230')
bash-3.00$ printf '<%s>\n' "$@"
<a>
<b>
<c>

(same problem when replacing "$@" with $@ or $*)

regards,
Stephane

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