A few (more) examples of what your trying to parse would help, but this seems to do what I think your trying to do? 

my @s = ( 
    '129-129A & B-131 NORTH AV', 
    '129-129A + B-131 NORTH AV', 
    '129-129A / B-131 NORTH AV', 
    '129-129A - B-131 NORTH AV',
);
print join'|', grep $_, split '(?:\s+([&/+-])\s+)|\s+', $_ for @s;

129-129A|&|B-131|NORTH|AV
129-129A|+|B-131|NORTH|AV
129-129A|/|B-131|NORTH|AV
129-129A|-|B-131|NORTH|AV

[download]

Update after your update: Maybe this is nearer/ 

perl> print join'|', grep $_, split '([&/+-])|\s+', $_ for @s;
129|-|129A|&|B|-|131|NORTH|AV
129|-|129A|+|B|-|131|NORTH|AV
129|-|129A|/|B|-|131|NORTH|AV
129|-|129A|-|B|-|131|NORTH|AV

[download]
Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
"Memory, processor, disk in that order on the hardware side. Algorithm, algorithm, algorithm on the code side." - tachyon

In reply to Re: split and capture some of the separators by BrowserUk
in thread split and capture some of the separators by shemp

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