An executable shell script can be found above, or at rsh.sh.
Whereas a much more readable python script that converts text to Elder Futhark, ignoring escape sequences, can be found at rsh.py.
A version written in Hy (and slightly less compatible with non-vt100 terminals), can be found at github.
The top few lines of a Vim session follow (you can see the source in latin script at superoxide.svg).
+ [ᚾᚩ ᚾᚨᛗᛖ] | ᛋ/ᛋᚢᛈᛖᚱᚩᛉᛁᛞᛖ.ᛋᚹᚷ ______________________________________________________________________________________ᛉ
1 <ᛋᚹᚷ ᚹᛁᛖᚹᛒᚩᛉ="0 0 100 100" ᛉᛗᛚᚾᛋ="ᚻᛏᛏᛈ://ᚹᚹᚹ.ᚹ3.ᚩᚱᚷ/2000/ᛋᚹᚷ" ᛋᛏᚣᛚᛖ="ᚹᛁᛞᚦ: 100%; ᚻᛖᛁᚷᚻᛏ: 100%; ᛒᚨᚳᛣᚷᚱᚩᚢᚾᛞ-ᚳᚩᛚᚩᚱ: ᛒ
2 <ᛋᛏᚣᛚᛖ>
3 .ᛏᛁᛏᛚᛖ { ᚠᚩᚾᛏ: ᛒᚩᛚᛞ 45ᛈᛉ ᚻᛖᛚᚹᛖᛏᛁᚳᚨ; }
4 </ᛋᛏᚣᛚᛖ>
5 <ᛏᛖᛉᛏ ᛉ="50" ᚣ="50" ᚠᛁᛚᛚ="ᚹᚻᛁᛏᛖ" ᛏᛖᛉᛏ-ᚨᚾᚳᚩᚱ="ᛗᛁᛞᛞᛚᛖ" ᛞᚩᛗᛁᚾᚨᚾᛏ-ᛒᚨᛋᛖᛚᛁᚾᛖ="ᛗᛁᛞᛞᛚᛖ" ᚳᛚᚨᛋᛋ="ᛏᛁᛏᛚᛖ">ᚩ₂ ⁻</ᛏᛖᛉᛏ>
6 </ᛋᚹᚷ>
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