From: Martin Jerabek <om@mailservice.ms>
To: 58718@debbugs.gnu.org
Subject: bug#58718: Acknowledgement (Incorrect regex in nXML URI check)
Date: Sun, 23 Oct 2022 12:46:18 +0200 [thread overview]
Message-ID: <0eae90fa905f352731ef7e26ba02d390b4f9329e.camel@fastmail.fm> (raw)
In-Reply-To: <handler.58718.B.16664517395858.ack@debbugs.gnu.org>
[-- Attachment #1: Type: text/plain, Size: 859 bytes --]
It turned out that my patch was incomplete. Fixing the bug in
rng-uri-file-name-1 revealed another bug in rng-uri-unescape-unibyte.
The anonymous function passed to replace-regexp-in-string returned a
number (e.g. 32 for space) but replace-regexp-in-string expected a
string as the return value.
I therefore added a call to "string" to convert the number back to a
string (e.g. " ").
With this fix I was finally able to use a RELAX-NG schema file in a
path containing spaces.
I made the same fix in rng-uri-unescape-unibyte-match because it was
also obviously wrong (regexp-quote expects a string). However,
it would be good if someone more familiar with this code (and Lisp in
general) could check all the other occurrences of
replace-regexp-in-string to make sure they do not contain the same bug.
Find attached the expanded patch.
[-- Attachment #2: rng-uri.patch --]
[-- Type: text/x-patch, Size: 1188 bytes --]
diff --git a/lisp/nxml/rng-uri.el b/lisp/nxml/rng-uri.el
index 77fed8c32d..242238e0d1 100644
--- a/lisp/nxml/rng-uri.el
+++ b/lisp/nxml/rng-uri.el
@@ -68,7 +68,7 @@ Signal an error if URI is not a valid file URL."
;; pattern is either nil or match or replace
(defun rng-uri-file-name-1 (uri pattern)
- (unless (string-match "\\`\\(?:[^%]\\|%[[:xdigit:]]{2}\\)*\\'" uri)
+ (unless (string-match "\\`\\(?:[^%]\\|%[[:xdigit:]]\\{2\\}\\)*\\'" uri)
(rng-uri-error "Bad escapes in URI `%s'" uri))
(setq uri (rng-uri-unescape-multibyte uri))
(let* ((components
@@ -312,7 +312,7 @@ Both FULL and BASE must be absolute URIs."
(defun rng-uri-unescape-unibyte (str)
(replace-regexp-in-string "%[0-7][[:xdigit:]]"
(lambda (h)
- (string-to-number (substring h 1) 16))
+ (string (string-to-number (substring h 1) 16)))
str
t
t))
@@ -325,8 +325,8 @@ Both FULL and BASE must be absolute URIs."
(regexp-quote
(if (= (length match) 1)
match
- (string-to-number (substring match 1)
- 16)))))
+ (string (string-to-number (substring match 1)
+ 16))))))
str
t
t))
next prev parent reply other threads:[~2022-10-23 10:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-22 12:58 bug#58718: Incorrect regex in nXML URI check Martin Jerabek
[not found] ` <handler.58718.B.16664517395858.ack@debbugs.gnu.org>
2022-10-23 10:46 ` Martin Jerabek [this message]
2022-10-24 10:51 ` Mattias Engdegård
2022-10-24 12:26 ` Robert Pluim
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