Unset envvar subs dont overwrite with nils#27
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ddillinger wants to merge 2 commits intosonian:masterfrom
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Unset envvar subs dont overwrite with nils#27ddillinger wants to merge 2 commits intosonian:masterfrom
ddillinger wants to merge 2 commits intosonian:masterfrom
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added 2 commits
November 22, 2016 10:09
If the envvar is unset, System/getenv returns a nil, which was being assoc'd in place. So you couldn't actually have a default in config, that you *optionally* override with an envvar. It'd just always be nil. This changes that so that if the envvar is unset, it won't assoc to the location; if a key did exist there it will now return.
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Although I didn't need this for the thing I wanted the original feature for, it occurred to me while using it that there's certainly a use case for overriding an existing default via environment, and the first implementation couldn't do that. If you didn't set the envvar, it always returned
nilfor the config coordinates, even if you had something set there in the file on disk.Also, I got to use
paredit-convolute-sexpwhile tweaking the tests, which means I am having a spectacular morning already.