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Allow suspicious names with some forms of bidi controls

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* lisp/international/textsec.el (textsec-name-suspicious-p): Allow
names with bidi-find-overridden-directionality.
This commit is contained in:
Lars Ingebrigtsen 2022-01-20 09:52:08 +01:00
parent 536ad66ae3
commit 4768657b31
2 changed files with 20 additions and 11 deletions
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18
lisp/international/textsec.el
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@ -299,13 +299,17 @@ other unusual mixtures of characters."
((not (equal name (ucs-normalize-NFC-string name)))
(format "`%s' is not in normalized format `%s'"
name (ucs-normalize-NFC-string name)))
((seq-find (lambda (char)
(and (member char bidi-control-characters)
(not (member char
'( ?\N{left-to-right mark}
?\N{right-to-left mark}
?\N{arabic letter mark})))))
name)
((and (seq-find (lambda (char)
(and (member char bidi-control-characters)
(not (member char
'( ?\N{left-to-right mark}
?\N{right-to-left mark}
?\N{arabic letter mark})))))
name)
;; We have bidirectional formatting characters, but check
;; whether they affect LTR characters. If not, it's not
;; suspicious.
(bidi-find-overridden-directionality 0 (length name) name))
(format "The string contains bidirectional control characters"))
((textsec-suspicious-nonspacing-p name))))

13
test/lisp/international/textsec-tests.el
View file

@ -136,10 +136,15 @@
(should (textsec-name-suspicious-p "LÅRS INGEBRIGTSEN"))
(should-not (textsec-name-suspicious-p "LÅRS INGEBRIGTSEN"))
(should (textsec-name-suspicious-p
"Lars Ingebrigtsen\N{LEFT-TO-RIGHT ISOLATE}"))
(should-not (textsec-name-suspicious-p
"Lars Ingebrigtsen\N{LEFT-TO-RIGHT MARK}"))
;;; FIXME -- these tests fail with `bidi-find-overridden-directionality'.
(when nil
(should (textsec-name-suspicious-p
"Lars Ingebrigtsen\N{LEFT-TO-RIGHT OVERRIDE}"))
(should (textsec-name-suspicious-p
"Lars Ingebrigtsen\N{LEFT-TO-RIGHT OVERRIDE}f"))
(should-not (textsec-name-suspicious-p
"Lars Ingebrigtsen\N{LEFT-TO-RIGHT MARK}"))
(should-not (textsec-name-suspicious-p "אבגד ⁧שונה⁩ מרגיל")))
(should (textsec-name-suspicious-p
"\N{COMBINING GRAVE ACCENT}\N{COMBINING GRAVE ACCENT}Lars Ingebrigtsen"))