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Marc Cornellà authored
The `shwordsplit` option affects all variables and we only need to split the `$EDITOR` variable. Because of that, using `${=spec}` is a much better alternative. More info at http://zsh.sourceforge.net/Doc/Release/Expansion.html#index-SH_005fWORD_005fSPLIT_002c-togglebec53135
