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From: | Emanuel Berg |
Subject: | Re: Is there a way of setting a variable only when it exists? |
Date: | Wed, 16 Mar 2022 07:37:32 +0100 |
User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
Tomas Nordin wrote: > What about doing an assert of sorts > > (message "some--internal-var is %S" some--internal-var) > (setq some--internal-var 42) > > It will crash your init process if some--internal-var is void. Byte-compile (message "some--internal-var is %S" some--internal-var) and the byte-compiler will tell you Warning: reference to free variable ‘some--internal-var’ -- underground experts united https://dataswamp.org/~incal
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