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  • ksh93 only does static scoping False. Commented Sep 11, 2019 at 12:38
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    @Isaac, it seems like you're wanting to play on words, so I'm not going to argue with you. I'll leave the answer there in case it can be useful to others. Commented Sep 11, 2019 at 14:15
  • @Isaac This is a confusion in terminology. When Stéphane says "ksh93 only does static scoping", he means ksh93 has both "no scope" and "static scope". "No scope" means global scope only, i.e. there's only one (global) scope for variables. Static (or private) scope means that a variable is only visible within the declaring function, not in any children functions, including itself if called recursively. Dynamic scope means visible and changeable by children functions. In both static and dynamic scope, the previous scope is restored when the function returns to its caller. Commented Sep 13, 2019 at 17:09
  • Bash and ksh88 have global and dynamic scopes. Ksh93 has global and static scopes. Confusingly, the builtin "local" indicates dynamic scope, not private (static) scope. See also unix.stackexchange.com/questions/375156. Commented Sep 13, 2019 at 17:09