Such an editor will be written in HQ9E+, my fork of HQ9+ with the following semantics: H: prints Hello, World! Q: prints the program's source text

Such an editor will be written in HQ9E+, my fork of HQ9+ with the following semantics: H: prints Hello, World! Q: prints the program's source text 9: prints the lyrics to 99 Bottles of Beer on the Wall E: behaves like a nano-like text editor +: increments the accumulator A transparent preprocessor can of course be used to add the necessary "E" to the empty source as part of the build step.