A few more examples would help. I'm only inserting the newline to make it easy to see where I adding the spaces.
#! perl -slw
use strict;
use Inline::Files;
select OUTPUT;
while( <DATA> ) {
s[(.{9,18})(?=\b\W)][$1 \n]g;
print;
}
__DATA__
for(1..20){$bar=$bop[1];print"$bar/$baz,$foo[$baz]"}
for(1..20)%7B%24bar%3D%24bop%5B1%5D%3Bprint%22%24bar%2F%20%24baz%2C%24
+foo%5B%24baz%5D%22%7D
__OUTPUT__
for(1..20){$bar
=$bop[1];print
"$bar/$baz,$foo
[$baz]"}
for(1..20)%7B
%24bar%3D%24bop
%5B1%5D%3Bprint%22
%24bar%2F%20%24baz
%2C%24foo%5B%24baz
%5D%22%7D
Examine what is said, not who speaks.
Silence betokens consent.
Love the truth but pardon error.
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