One tree per alias expansion, opaque in the state, reuse key from the modes (refactor 3.2, S5, S7) - #241

One tree per alias expansion, opaque in the state, reuse key from the modes (refactor 3.2, S5, S7)#241

sf624 merged 4 commits into

refactor/3.2-splitsf624/bash-explainer:refactor/3.2-splitfrom

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