refactor: unset variables with graceful degradation (#53) #56
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for shells that correctly interpret `unset variable`, it is wasteful to first clear the variable; that behavior is now relegated to only environments and interpreters where `unset` has failed to fix #53 Signed-off-by: Lucas Larson <LucasLarson@riseup.net>
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for shells that correctly interpret
unset variable, it is wasteful to first clear the variable withvariable=''; to fix #53, that behavior is now relegated to only situations and interpreters whereunsetfails.