Alas! it would be perfect, if no postprocessing was necessary on the match expression result!

Hardly elegant, but along the lines of the many other worthy entries. (Awful hack with $a to avoid declaring it.) Does not have to throw anything away. And probably benchmarks worse given the perl evaluation each time through! 

my $line = "xx556xx";

my @list = $line =~ m/((??{ $a = substr( $line, pos($line), 1); $a ? q
+uotemeta($a) . '+' : '$' }))/g;

print "@list";

[download]

-xdg

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In reply to Re: Elegant way to split into sequences of identical chars? by xdg
in thread Elegant way to split into sequences of identical chars? by pKai

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