autoconf: Slashes

1 
1 11.11 Slashes in Shell Scripts
1 ==============================
1 
1 Unpatched Tru64 5.1 `sh' omits the last slash of command-line arguments
1 that contain two trailing slashes:
1 
1      $ echo / // /// //// .// //.
1      / / // /// ./ //.
1      $ x=//
1      $ eval "echo \$x"
1      /
1      $ set -x
1      $ echo abc | tr -t ab //
1      + echo abc
1      + tr -t ab /
1      /bc
1 
1    Unpatched Tru64 4.0 `sh' adds a slash after `"$var"' if the variable
1 is empty and the second double-quote is followed by a word that begins
1 and ends with slash:
1 
1      $ sh -xc 'p=; echo "$p"/ouch/'
1      p=
1      + echo //ouch/
1      //ouch/
1 
1    However, our understanding is that patches are available, so perhaps
1 it's not worth worrying about working around these horrendous bugs.
1