# This forces PL files to create target in same directory as PL file.
# This is so that make depend always knows where to find PL derivatives.
-chdir(dirname($0));
-($file = basename($0)) =~ s/\.PL$//;
-$file =~ s/\.pl$//
- if ($Config{'osname'} eq 'VMS' or
- $Config{'osname'} eq 'OS2'); # "case-forgiving"
+chdir dirname($0);
+$file = basename($0, '.PL');
+$file .= '.com' if $^O eq 'VMS';
open OUT,">$file" or die "Can't create $file: $!";
# You can use $Config{...} to use Configure variables.
print OUT <<"!GROK!THIS!";
-$Config{'startperl'}
- eval 'exec perl -S \$0 "\$@"'
- if 0;
+$Config{startperl}
+ eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
+ if \$running_under_some_shell;
\$startperl = "$Config{startperl}";
+\$perlpath = "$Config{perlpath}";
!GROK!THIS!
# In the following, perl variables are not expanded during extraction.
#
# $Log: s2p.SH,v $
+=head1 NAME
+
+s2p - Sed to Perl translator
+
+=head1 SYNOPSIS
+
+B<s2p [options] filename>
+
+=head1 DESCRIPTION
+
+I<S2p> takes a sed script specified on the command line (or from
+standard input) and produces a comparable I<perl> script on the
+standard output.
+
+=head2 Options
+
+Options include:
+
+=over 5
+
+=item B<-DE<lt>numberE<gt>>
+
+sets debugging flags.
+
+=item B<-n>
+
+specifies that this sed script was always invoked with a B<sed -n>.
+Otherwise a switch parser is prepended to the front of the script.
+
+=item B<-p>
+
+specifies that this sed script was never invoked with a B<sed -n>.
+Otherwise a switch parser is prepended to the front of the script.
+
+=back
+
+=head2 Considerations
+
+The perl script produced looks very sed-ish, and there may very well
+be better ways to express what you want to do in perl. For instance,
+s2p does not make any use of the split operator, but you might want
+to.
+
+The perl script you end up with may be either faster or slower than
+the original sed script. If you're only interested in speed you'll
+just have to try it both ways. Of course, if you want to do something
+sed doesn't do, you have no choice. It's often possible to speed up
+the perl script by various methods, such as deleting all references to
+$\ and chop.
+
+=head1 ENVIRONMENT
+
+S2p uses no environment variables.
+
+=head1 AUTHOR
+
+Larry Wall E<lt>F<larry@wall.org>E<gt>
+
+=head1 FILES
+
+=head1 SEE ALSO
+
+ perl The perl compiler/interpreter
+
+ a2p awk to perl translator
+
+=head1 DIAGNOSTICS
+
+=head1 BUGS
+
+=cut
+
$indent = 4;
$shiftwidth = 4;
$l = '{'; $r = '}';
print &q(<<"EOT");
: $startperl
-: eval 'exec perl -S \$0 \${1+"\$@"}'
+: eval 'exec $perlpath -S \$0 \${1+"\$@"}'
: if \$running_under_some_shell;
:
EOT