set --show
: Show the originally inherited value, if any
#9029
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This adds a line to
set --show
s output liketo help with debugging.
Note that this means keeping an additional copy of the original
environment around. At most this would be one ARG_MAX's worth, which
is typically about 2M on linux and typically less elsewhere.
TODOs:
This is a quick implementation that might not be ideal, I'm not sure if there isn't some better way to implement it, or if storing the entire environment is seen as too wasteful - an alternative would be to just store the variable names so we can say "was originally inherited" but not with what value.