be21

  In most cases maintainability wins,
  and avoiding “premature optimization”
  is very much a necessity in C++.

I agree with this conclusion. Quite often, when you start coding you don't know, where the performance bottlenecks hide, and you don't want to waste time, thinking about allocating memory for a routine which you could write equally well in any scripting language. Unfortunately plugable automatic garbage collection for less verbose performance uncritical scripting tasks within the language is not usable.

I am not familiar with the project. What are the advantages of Dgsh in comparision to pipexec: https://github.com/flonatel/pipexec

Nazi Enigma encryption was cracked, because they encrypted everything, even repetitive information like weather reports. Https for everything is promoted by NSA.

Probably I am wrong but there seems to be no folding support?

not even wrong :)