Code listing gsub for loop
article.append(addInsetCodeListing(["for (i=2; i<=3; i++ ) {", "    gsub(\"^\\"|\\"$\", \"\", $i);", "    gsub(\"\\"\\", \"\\"\", $i);", "}"]))

Code listing while loop
article.append(addInsetCodeListing([" while ( $NF ~ /^".*["]$/ ) {", "    getline x;", "    $0 = $0 "\n" x;", "}"]))