It seems you have your solution. However, I see you're still including the  '^' character in your inverted character class; is this what you want? See example below. 

c:\@Work\Perl>perl -wMstrict -le
"$_ = 'a { b } c { d^ } e {{F}} {{^G}}';
 ;;
 s/\{([^{^}]+)\}/ lbracket $1 rbracket /g;
 print qq{'$_'};
"
'a  lbracket  b  rbracket  c { d^ } e { lbracket F rbracket } {{^G}}'

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In reply to Re^3: Regex - Is there any way to control when the contents of a variable are interpolated? (Using "$1" and '$1' in regex replacements) by AnomalousMonk
in thread Regex - Is there any way to control when the contents of a variable are interpolated? (Using "$1" and '$1' in regex replacements) by JDoolin

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