This is the mail archive of the
cygwin-apps
mailing list for the Cygwin project.
Re: [ITP] qt3-3.3.4
On Wed, Sep 28, 2005 at 10:38:31PM -0400, Igor Pechtchanski wrote:
> On Wed, 28 Sep 2005, Nicholas Wourms wrote:
> > unpack() {
> > winbase=`cygpath -m ${srcdir}`
>
> Ahem,
>
> winbase="`cygpath -m "${srcdir}"`"
>
Ahem,
quote from the autoconf manual:
------8<------
10.5 Shell Substitutions
========================
Contrary to a persistent urban legend, the Bourne shell does not
systematically split variables and back-quoted expressions, in
particular on the right-hand side of assignments and in the argument of
`case'. For instance, the following code:
case "$given_srcdir" in
.) top_srcdir="`echo "$dots" | sed 's,/$,,'`"
*) top_srcdir="$dots$given_srcdir" ;;
esac
is more readable when written as:
case $given_srcdir in
.) top_srcdir=`echo "$dots" | sed 's,/$,,'`
*) top_srcdir=$dots$given_srcdir ;;
esac
and in fact it is even _more_ portable: in the first case of the first
attempt, the computation of `top_srcdir' is not portable, since not all
shells properly understand `"`..."..."...`"'. Worse yet, not all
shells understand `"`...\"...\"...`"' the same way. There is just no
portable way to use double-quoted strings inside double-quoted
back-quoted expressions (pfew!).
------8<------
Cheers,
Peterr