NetBSD Problem Report #60844
From www@netbsd.org Sat Oct 3 11:19:40 2026
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by mollari.NetBSD.org (Postfix) with ESMTPS id 481031A923E
for <gnats-bugs@gnats.NetBSD.org>; Sat, 3 Oct 2026 11:19:40 +0000 (UTC)
Message-Id: <20261003111939.585351A923F@mollari.NetBSD.org>
Date: Sat, 3 Oct 2026 11:19:39 +0000 (UTC)
From: uwe@stderr.spb.ru
Reply-To: uwe@stderr.spb.ru
To: gnats-bugs@NetBSD.org
Subject: www/lynx with NetBSD curses fails to display utf-8
X-Send-Pr-Version: www-1.0
X-From4GNATS: "uwe@stderr.spb.ru via gnats" <gnats-admin@NetBSD.org>
>Number: 60844
>Category: pkg
>Synopsis: www/lynx with NetBSD curses fails to display utf-8
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: pkg-manager
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sat Oct 03 11:20:00 +0000 2026
>Last-Modified: Sat Oct 03 11:25:02 +0000 2026
>Originator: Valery Ushakov
>Release: pkgsrc-2026Q3
>Organization:
>Environment:
NetBSD omena 11.0 NetBSD 11.0 (GENERIC) #0: Thu Jul 30 15:23:12 UTC 2026 mkrepro@mkrepro.NetBSD.org:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
I use lynx with utf-8 display charset (and utf-8 locale) and raw mode
OFF on NetBSD with netbsd curses. When I open www.netbsd.org instead
of angle quotes, like:
» Learn more
I get
» Learn more
I.e. the two bytes of utf-8 representation of the quote are displayed
as two characters, not one.
If I open an HTML with cyrillic, I get all the characters split this
way:
ÐивеÑ
instead of
Привет
>How-To-Repeat:
Set RAW to OFF, set display charset to UTF-8, open www.netbsd.org.
In a typical 80x24 terminal you'll need to page down once.
>Fix:
I tracked it down to LYwaddnstr (in LYCurses.c) calling
waddch(w, UCH(src[inx]));
in a loop, which obviously rips the utf-8 apart.
I'll attach a patch in a follow-up e-mail.
>Audit-Trail:
From: Valery Ushakov <uwe@stderr.spb.ru>
To: gnats-bugs@netbsd.org
Cc:
Subject: Re: pkg/60844: www/lynx with NetBSD curses fails to display utf-8
Date: Sat, 3 Oct 2026 14:23:58 +0300
--- a/src/LYCurses.c
+++ b/src/LYCurses.c
@@ -2287,19 +2287,31 @@ void LYwaddnstr(WINDOW * w GCC_UNUSED,
#endif
LYGetYX(y0, x0);
- for (inx = 0; inx < len; ++inx) {
- /*
- * Do tab-expansion relative to the base of the string (rather than
- * the screen) so that tabs in a TEXTAREA will look right.
- */
- if (src[inx] == '\t') {
- LYGetYX(y, x);
- while ((++x - x0) % 8)
- waddch(w, ' ');
- waddch(w, ' ');
- } else {
- waddch(w, UCH(src[inx]));
+ /*
+ * waddnstr(w, src, len), but do tab-expansion relative to the
+ * base of the string (rather than the screen) so that tabs in a
+ * TEXTAREA will look right.
+ */
+ const char *chunk = src;
+ while (*chunk != '\0') {
+ const char *tabp = strchr(chunk, '\t');
+ if (tabp == NULL) {
+ size_t toend = src + len - chunk;
+ waddnstr(w, chunk, toend);
+ break;
}
+
+ if (tabp != chunk) {
+ size_t totab = tabp - chunk;
+ waddnstr(w, chunk, totab);
+ }
+
+ LYGetYX(y, x);
+ do {
+ waddch(w, ' ');
+ } while ((++x - x0) % 8);
+
+ chunk = tabp + 1;
}
}
----8<--------8<--------8<----
begin 644 LYwaddnstr.patch
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