| 1 | #!./perl |
| 2 | |
| 3 | print "1..5\n"; |
| 4 | |
| 5 | my $j = 1; |
| 6 | for $i ( 1,2,5,4,3 ) { |
| 7 | $file = mkfiles($i); |
| 8 | open(FH, "> $file") || die "can't create $file: $!"; |
| 9 | print FH "not ok " . $j++ . "\n"; |
| 10 | close(FH) || die "Can't close $file: $!"; |
| 11 | } |
| 12 | |
| 13 | |
| 14 | { |
| 15 | local *ARGV; |
| 16 | local $^I = '.bak'; |
| 17 | local $_; |
| 18 | @ARGV = mkfiles(1..3); |
| 19 | $n = 0; |
| 20 | while (<>) { |
| 21 | print STDOUT "# initial \@ARGV: [@ARGV]\n"; |
| 22 | if ($n++ == 2) { |
| 23 | other(); |
| 24 | } |
| 25 | show(); |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | $^I = undef; |
| 30 | @ARGV = mkfiles(1..3); |
| 31 | $n = 0; |
| 32 | while (<>) { |
| 33 | print STDOUT "#final \@ARGV: [@ARGV]\n"; |
| 34 | if ($n++ == 2) { |
| 35 | other(); |
| 36 | } |
| 37 | show(); |
| 38 | } |
| 39 | |
| 40 | sub show { |
| 41 | #warn "$ARGV: $_"; |
| 42 | s/^not //; |
| 43 | print; |
| 44 | } |
| 45 | |
| 46 | sub other { |
| 47 | print STDOUT "# Calling other\n"; |
| 48 | local *ARGV; |
| 49 | local *ARGVOUT; |
| 50 | local $_; |
| 51 | @ARGV = mkfiles(5, 4); |
| 52 | while (<>) { |
| 53 | print STDOUT "# inner \@ARGV: [@ARGV]\n"; |
| 54 | show(); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | sub mkfiles { |
| 59 | my @files = map { "scratch$_" } @_; |
| 60 | return wantarray ? @files : $files[-1]; |
| 61 | } |
| 62 | |
| 63 | END { unlink map { ($_, "$_.bak") } mkfiles(1..5) } |