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docs(lib): clarify setq!'s docstring

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Emacs 29+ introduced the setopt macro for setting defcustom variables in
a way that takes setters and type-constraints into account, but it
eagerly pulls in a symbol's dependencies before doing so. To side-step
this silliness, use Doom's setq! macro instead. I'm tempted to alias
setopt to it...
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Henrik Lissner 2022-03-19 21:16:10 +01:00
parent 3333eee466
commit b92c644ad8
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core/core-lib.el
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@ -463,11 +463,11 @@ See `general-key-dispatch' for what other arguments it accepts in BRANCHES."
`(setq ,sym (append ,sym ,@lists)))
(defmacro setq! (&rest settings)
"A stripped-down `customize-set-variable' with the syntax of `setq'.
"A more sensible `setopt' for setting customizable variables.
This can be used as a drop-in replacement for `setq'. Particularly when you know
a variable has a custom setter (a :set property in its `defcustom' declaration).
This triggers setters. `setq' does not."
This can be used as a drop-in replacement for `setq' and *should* be used
instead of `setopt'. Unlike `setq', this triggers custom setters on variables.
Unlike `setopt', this won't needlessly pull in dependencies."
(macroexp-progn
(cl-loop for (var val) on settings by 'cddr
collect `(funcall (or (get ',var 'custom-set) #'set)