Commit b71d4ce0 authored by Mattias Engdegård's avatar Mattias Engdegård Committed by Eli Zaretskii

Handle raw bytes, and LF in ranges, in rx `any' argument strings

* lisp/emacs-lisp/rx.el (rx-check-any-string): Rewrite to handle raw bytes
in unibyte strings and accept LF as range endpoints (Bug#33205).
* test/lisp/emacs-lisp/rx-tests.el: Add tests for the above.
parent fb10834a
Pipeline #399 failed with stage
in 12 seconds
......@@ -449,28 +449,35 @@ Only both edges of each range is checked."
(defun rx-check-any-string (str)
"Check string argument STR for Rx `any'."
(let ((i 0)
c1 c2 l)
(if (= 0 (length str))
(error "String arg for Rx `any' must not be empty"))
(while (string-match ".-." str i)
;; string before range: convert it to characters
(if (< i (match-beginning 0))
(setq l (nconc
(append (substring str i (match-beginning 0)) nil))))
;; range
(setq i (match-end 0)
c1 (aref str (match-beginning 0))
c2 (aref str (1- i)))
((< c1 c2) (setq l (nconc l (list (cons c1 c2)))))
((= c1 c2) (setq l (nconc l (list c1))))))
;; rest?
(if (< i (length str))
(setq l (nconc l (append (substring str i) nil))))
"Turn the `any' argument string STR into a list of characters.
The original order is not preserved. Ranges, \"A-Z\", become pairs, (?A . ?Z)."
(let ((decode-char
;; Make sure raw bytes are decoded as such, to avoid confusion with
;; U+0080..U+00FF.
(if (multibyte-string-p str)
(lambda (c) (if (<= #x80 c #xff)
(+ c #x3fff00)
(len (length str))
(i 0)
(ret nil))
(if (= 0 len)
(error "String arg for Rx `any' must not be empty"))
(while (< i len)
(cond ((and (< i (- len 2))
(= (aref str (+ i 1)) ?-))
;; Range.
(let ((start (funcall decode-char (aref str i)))
(end (funcall decode-char (aref str (+ i 2)))))
(cond ((< start end) (push (cons start end) ret))
((= start end) (push start ret)))
(setq i (+ i 3))))
;; Single character.
(push (funcall decode-char (aref str i)) ret)
(setq i (+ i 1)))))
(defun rx-check-any (arg)
......@@ -33,6 +33,28 @@
(number-sequence ?< ?\])
(number-sequence ?- ?:))))))
(ert-deftest rx-char-any-range-nl ()
"Test character alternatives with LF as a range endpoint."
(should (equal (rx (any "\n-\r"))
(should (equal (rx (any "\a-\n"))
(ert-deftest rx-char-any-raw-byte ()
"Test raw bytes in character alternatives."
;; Separate raw characters.
(should (equal (string-match-p (rx (any "\326A\333B"))
;; Range of raw characters, unibyte.
(should (equal (string-match-p (rx (any "\200-\377"))
;; Range of raw characters, multibyte.
(should (equal (string-match-p (rx (any "Å\211\326-\377\177"))
(ert-deftest rx-pcase ()
(should (equal (pcase "a 1 2 3 1 1 b"
((rx (let u (+ digit)) space
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