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#!/usr/bin/awk -f BEGIN { dim = "\x1B[2m" cyan = "\x1B[36m" reset = "\x1B[0m" } { # Strip carriage returns from line gsub(/\r/, "", $0) if ($0 ~ /^On .*, .* wrote:/ || $0 ~ /^>+/) { print dim cyan $0 reset } else { print $0 } }