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core-lib: add pushmany! macro, refactor pushnew!

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Henrik Lissner 2019-07-21 19:11:43 +02:00
parent 0a84d2f0a9
commit e8ecf65cf9
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1 changed files with 12 additions and 4 deletions
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core/core-lib.el
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@ -284,10 +284,18 @@ MATCH is a string regexp. Only entries that match it will be included."
(directory-file-name (file-name-directory path)))) (directory-file-name (file-name-directory path))))
(defmacro pushnew! (place &rest values) (defmacro pushnew! (place &rest values)
"Like `cl-pushnew', but will prepend VALUES to PLACE. "Push VALUES sequentially into PLACE, if they aren't already present.
The order VALUES is preserved." This is a variadic `cl-pushnew'."
`(dolist (--x-- (list ,@(nreverse values))) (let ((var (make-symbol "result")))
(cl-pushnew --x-- ,place))) `(dolist (,var (list ,@values))
(cl-pushnew ,var ,place))))
(defmacro pushmany! (place &rest values)
"Push VALUES sequentually into PLACE.
This is a variadic `push'."
(let ((var (make-symbol "result")))
`(dolist (,var ,values)
(push ,var ,place))))
(defmacro prependq! (sym &rest lists) (defmacro prependq! (sym &rest lists)
"Prepend LISTS to SYM in place." "Prepend LISTS to SYM in place."