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--- BackupPC-3.3.1/lib/BackupPC/Lib.pm.orig	2016-12-22 14:40:02.589015927 +0100
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+++ BackupPC-3.3.1/lib/BackupPC/Lib.pm	2016-12-22 14:41:37.511427617 +0100
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@@ -1261,7 +1261,7 @@
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         #
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         # Replace scalar variables first
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         #
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-        $arg =~ s[\${(\w+)}(\+?)]{
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+        $arg =~ s[\$\{(\w+)}(\+?)]{
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             exists($vars->{$1}) && ref($vars->{$1}) ne "ARRAY"
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                 ? ($2 eq "+" ? $bpc->shellEscape($vars->{$1}) : $vars->{$1})
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                 : "\${$1}$2"
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@@ -1270,7 +1270,7 @@
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         # Now replicate any array arguments; this just works for just one
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         # array var in each argument.
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         #
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-        if ( $arg =~ m[(.*)\${(\w+)}(\+?)(.*)] && ref($vars->{$2}) eq "ARRAY" ) {
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+        if ( $arg =~ m[(.*)\$\{(\w+)}(\+?)(.*)] && ref($vars->{$2}) eq "ARRAY" ) {
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             my $pre  = $1;
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             my $var  = $2;
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             my $esc  = $3;
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@@ -1295,7 +1295,7 @@
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 sub cmdExecOrEval
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 {
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     my($bpc, $cmd, @args) = @_;
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-    
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+
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     if ( (ref($cmd) eq "ARRAY" ? $cmd->[0] : $cmd) =~ /^\&/ ) {
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         $cmd = join(" ", @$cmd) if ( ref($cmd) eq "ARRAY" );
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 	print(STDERR "cmdExecOrEval: about to eval perl code $cmd\n")
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@@ -1336,7 +1336,7 @@
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     my($bpc, $cmd, $stdoutCB, $ignoreStderr, $pidHandlerCB, @args) = @_;
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     my($pid, $out, $allOut);
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     local(*CHILD);
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-    
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+
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     $? = 0;
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     if ( (ref($cmd) eq "ARRAY" ? $cmd->[0] : $cmd) =~ /^\&/ ) {
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         $cmd = join(" ", @$cmd) if ( ref($cmd) eq "ARRAY" );