made workaround for implementations of sed that don't understand -E more robust
also made it compatible with POSIX shells
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@ -180,7 +180,8 @@ run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
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# if ! printf '' | sed -E 's///' 2>/dev/null; then
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# if printf '' | sed -r 's///' 2>/dev/null; then
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# sed () {
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# command sed "${@/-E/-r}"
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# n=$#; while [ "$n" -gt 0 ]; do arg=$1; shift; case $arg in -E*) arg=-r${arg#-E};; esac; set -- "$@" "$arg"; n=$(( n - 1 )); done
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# command sed "$@"
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# }
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# fi
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# fi
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