$ for v in 30 28 26 24 22 20 18 16 14 12 10; do
   printf '5.%s: ' $v
   5.${v}t/bin/perl a.pl
done
5.30: [1][1]
5.28: -bash: 5.28t/bin/perl: No such file or directory
5.26: [1][1]
5.24: [1][1]
5.22: [1][]
5.20: [1][]
5.18: [1][]
5.16: [1][]
5.14: [1][]
5.12: [1][]
5.10: [1][]

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I think it's an unintentional change that resulted from fixing this.

In reply to Re^9: printing unitialized value of the 'do BLOCK' by ikegami
in thread printing unitialized value of the 'do BLOCK' by rsFalse

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