[Bug 296207] bin/sh: Don't inherit variables declared local by default

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296207

pprocacci@gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |pprocacci@gmail.com

--- Comment #1 from pprocacci@gmail.com ---
"The vast majority of shells don't do that."  -- This simply isn't true.

  - sh (ash-derived)
  - dash (Debian/Ubuntu default sh)
  - BusyBox ash
  - mksh (MirBSD Korn shell)
  - pdksh (Public Domain Korn Shell)
  - zsh


All the above shells do exactly as you describe.  They inherit the callers
variable stack.  Outside of bash I don't know of a single shell that does this.

If you want portability, the answer is 'local myvar=""'.  That works
everywhere.

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