in reply to Regex to only show 2nd character of the same character in a string

My guess to your meaning would be: 

print $2 while 'abccabbcabc' =~ m[(c).*?(\1)]g;;
c
c

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As for your purpose, that's beyond me. Care to enlighten us?

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In the absence of evidence, opinion is indistinguishable from prejudice.
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