(autoconf.info)Slashes


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10.9 Slashes in Shell Scripts
=============================

Unpatched Tru64 5.1 `sh' omits the last slash of command-line arguments
that contain two trailing slashes:

     $ echo / // /// //// .// //.
     / / // /// ./ //.
     $ x=//
     $ eval "echo \$x"
     /
     $ set -x
     $ echo abc | tr -t ab //
     + echo abc
     + tr -t ab /
     /bc

   Unpatched Tru64 4.0 `sh' adds a slash after `"$var"' if the variable
is empty and the second double-quote is followed by a word that begins
and ends with slash:

     $ sh -xc 'p=; echo "$p"/ouch/'
     p=
     + echo //ouch/
     //ouch/

   However, our understanding is that patches are available, so perhaps
it's not worth worrying about working around these horrendous bugs.


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