Not exactly :)
C:\>perl -MO=Concise -e"@f = split ' ', shift"
9 <@> leave[1 ref] vKP/REFC ->(end)
1 <0> enter ->2
2 <;> nextstate(main 1 -e:1) v ->3
8 <@> split[t5] vK ->9
3 </> pushre(/"\\s+"/ => @f) s*/64 ->4
6 <1> shift sK/1 ->7
5 <1> rv2av[t4] sKRM/1 ->6
4 <#> gv[*ARGV] s ->5
7 <$> const[IV 0] s ->8
-e syntax OK
C:\>perl -MO=Concise -e"@f = split /\s+/, shift"
9 <@> leave[1 ref] vKP/REFC ->(end)
1 <0> enter ->2
2 <;> nextstate(main 1 -e:1) v ->3
8 <@> split[t5] vK ->9
3 </> pushre(/"\\s+"/ => @f) s/64 ->4
6 <1> shift sK/1 ->7
5 <1> rv2av[t4] sKRM/1 ->6
4 <#> gv[*ARGV] s ->5
7 <$> const[IV 0] s ->8
-e syntax OK
C:\>perl -MO=Concise -e"@f = split ?\s+?, shift"
9 <@> leave[1 ref] vKP/REFC ->(end)
1 <0> enter ->2
2 <;> nextstate(main 1 -e:1) v ->3
8 <@> split[t5] vK ->9
3 </> pushre(/"\\s+"/ => @f) s/64 ->4
6 <1> shift sK/1 ->7
5 <1> rv2av[t4] sKRM/1 ->6
4 <#> gv[*ARGV] s ->5
7 <$> const[IV 0] s ->8
-e syntax OK
B::Deparse cautions you that the output might not be what you expect (or that it might be a bug, which you should report), but B::Concise seems to agree that there's no difference (but don't take my word for it, it might just be a similar bug).
MJD says "you can't just make shit up and expect the computer to know what you mean, retardo!" | I run a Win32 PPM repository for perl 5.6.x and 5.8.x -- I take requests (README). | ** The third rule of perl club is a statement of fact: pod is sexy. |
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