perf(lib): dir!: unset file-name-handler-alist
file-name-directory consults this variable for alternative strategies, which is unnecessary work. (file!) won't (and should never be used in any context where it could) return anything but a simple file path.
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@ -303,7 +303,8 @@ TRIGGER-HOOK is a list of quoted hooks and/or sharp-quoted functions."
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(defmacro dir! ()
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"Return the directory of the file this macro was called."
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(file-name-directory (macroexpand '(file!))))
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(let (file-name-handler-alist)
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(file-name-directory (macroexpand '(file!)))))
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;; REVIEW Should I deprecate this? The macro's name is so long...
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(defalias 'letenv! 'with-environment-variables)
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