Yay! Top comment @ https://www.reddit.com/r/programming/comments/5hwj83/i_am_tired_of_makefiles/ …pic.twitter.com/uFpPvj8fPZ
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The attitude is that those who overcome differences to find consensus get to decide what's standard/universal.
And those who constantly meddle to undermine standards become outcasts.
I guess Windows would've had to figure out how to fake a fork(), which sh relies on, back in the NT days :P.
sh in no way relies on fork. That's a legacy implementation detail that can't be used on nommu anyway.
Subshells are convenient to implement lazily with fork, but you can also use proper data structures and marshall state to child.
Marshall? You mean "give the child all the required state as an "input argument" (for lack of better) to starting the child".
Yeah. Serialize the shell state (vars, functions, etc.) to a pipe or some other data channel the child shell reads and inits from.
You can also optimize-out subshells whose pids are never visible & implement them as a context in the original shell process.
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