runtime(doc): update and remove some invalid links

closes: #14748

Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

17 files changed, 75 insertions, 78 deletions

diff --git a/runtime/doc/debug.txt b/runtime/doc/debug.txt
index 1d3090af8f..4963fdd030 100644
--- a/runtime/doc/debug.txt
+++ b/runtime/doc/debug.txt
@@ -1,4 +1,4 @@
-*debug.txt*     For Vim version 9.1.  Last change: 2019 May 07
+*debug.txt*     For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -160,7 +160,7 @@ In WinDbg: choose Open Crash Dump on the File menu. Follow the instructions in
 3.5 Obtaining Microsoft Debugging Tools ~
 
 The Debugging Tools for Windows (including WinDbg) can be downloaded from
-    http://www.microsoft.com/whdc/devtools/debugging/default.mspx
+    https://learn.microsoft.com/en-us/windows-hardware/drivers/debugger/debugger-download-tools
 This includes the WinDbg debugger.
 
 Visual C++ 2005 Express Edition can be downloaded for free from:
diff --git a/runtime/doc/develop.txt b/runtime/doc/develop.txt
index 1b1ad85616..678a924611 100644
--- a/runtime/doc/develop.txt
+++ b/runtime/doc/develop.txt
@@ -1,4 +1,4 @@
-*develop.txt*   For Vim version 9.1.  Last change: 2022 Sep 20
+*develop.txt*   For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -152,7 +152,7 @@ VIM IS... NOT						*design-not*
   everything but the kitchen sink, but some people say that you can clean one
   with it.  ;-)"
   To use Vim with gdb see |terminal-debugger|.  Other (older) tools can be
-  found at http://www.agide.org and http://clewn.sf.net.
+  found at http://www.agide.org (link seems dead)  and http://clewn.sf.net.
 - Vim is not a fancy GUI editor that tries to look nice at the cost of
   being less consistent over all platforms.  But functional GUI features are
   welcomed.
diff --git a/runtime/doc/gui.txt b/runtime/doc/gui.txt
index de33c9caa9..3b559196b8 100644
--- a/runtime/doc/gui.txt
+++ b/runtime/doc/gui.txt
@@ -1,4 +1,4 @@
-*gui.txt*       For Vim version 9.1.  Last change: 2024 May 01
+*gui.txt*       For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1238,7 +1238,8 @@ This section describes other features which are related to the GUI.
 	endif
 
 A recommended Japanese font is MS Mincho.  You can find info here:
-http://www.lexikan.com/mincho.htm
+https://learn.microsoft.com/en-us/typography/font-list/ms-mincho
+It should be distributed with Windows.
 
 ==============================================================================
 8. Shell Commands					*gui-shell*
diff --git a/runtime/doc/if_cscop.txt b/runtime/doc/if_cscop.txt
index 3fa8f817f4..bb4c6a18d5 100644
--- a/runtime/doc/if_cscop.txt
+++ b/runtime/doc/if_cscop.txt
@@ -1,4 +1,4 @@
-*if_cscop.txt*  For Vim version 9.1.  Last change: 2022 Jan 08
+*if_cscop.txt*  For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Andy Kahn
@@ -358,7 +358,7 @@ system calls: fork(), pipe(), execl(), waitpid().  This means it is mostly
 limited to Unix systems.
 
 Additionally Cscope support works for Win32.  For more information and a
-cscope version for Win32 see:
+cscope version for Win32 see (link seems dead):
 
 	http://iamphet.nm.ru/cscope/index.html
 
diff --git a/runtime/doc/mbyte.txt b/runtime/doc/mbyte.txt
index 91154a7449..e38c30cb19 100644
--- a/runtime/doc/mbyte.txt
+++ b/runtime/doc/mbyte.txt
@@ -1,4 +1,4 @@
-*mbyte.txt*     For Vim version 9.1.  Last change: 2022 Apr 03
+*mbyte.txt*     For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar et al.
@@ -451,18 +451,19 @@ Useful utilities for converting the charset:
     Chinese:	    hc
 	Hc is "Hanzi Converter".  Hc convert a GB file to a Big5 file, or Big5
 	file to GB file.  Hc can be found at:
+	https://www.freshports.org/chinese/hc
 	ftp://ftp.cuhk.hk/pub/chinese/ifcss/software/unix/convert/hc-30.tar.gz
 
     Korean:	    hmconv
 	Hmconv is Korean code conversion utility especially for E-mail.  It can
 	convert between EUC-KR and ISO-2022-KR.  Hmconv can be found at:
-	ftp://ftp.kaist.ac.kr/pub/hangul/code/hmconv/
+	https://www.freshports.org/korean/hmconv/
 
     Multilingual:   lv
 	Lv is a Powerful Multilingual File Viewer.  And it can be worked as
 	|charset| converter.  Supported |charset|: ISO-2022-CN, ISO-2022-JP,
 	ISO-2022-KR, EUC-CN, EUC-JP, EUC-KR, EUC-TW, UTF-7, UTF-8, ISO-8859
-	series, Shift_JIS, Big5 and HZ.  Lv can be found at:
+	series, Shift_JIS, Big5 and HZ.  Lv can be found at (link seems dead):
 	http://www.ff.iij4u.or.jp/~nrt/lv/index.html
 
 
@@ -777,13 +778,13 @@ is suitable for complex input, such as CJK.
 
   For example, there are xwnmo and kinput2 Japanese |IM-server|, both are
   FrontEnd system.  Xwnmo is distributed with Wnn (see below), kinput2 can be
-  found at: ftp://ftp.sra.co.jp/pub/x11/kinput2/
+  found at (link seems dead): ftp://ftp.sra.co.jp/pub/x11/kinput2/
 
   For Chinese, there's a great XIM server named "xcin", you can input both
   Traditional and Simplified Chinese characters.  And it can accept other
-  locale if you make a correct input table.  Xcin can be found at:
-  http://cle.linux.org.tw/xcin/
-  Others are scim: http://scim.freedesktop.org/ and fcitx:
+  locale if you make a correct input table.  Xcin can be found at (link seems
+  dead): http://cle.linux.org.tw/xcin/
+  Others are scim: https://www.freedesktop.org/wiki/Software/scim/  and fcitx:
   http://www.fcitx.org/
 
 - Conversion Server
@@ -800,8 +801,8 @@ is suitable for complex input, such as CJK.
   number of Hira-gana characters are 76.  So, first, we pre-input text as
   pronounced in Hira-gana, second, we convert Hira-gana to Kanji or Kata-Kana,
   if needed.  There are some Kana-Kanji conversion server: jserver
-  (distributed with Wnn, see below) and canna.  Canna can be found at:
-  http://canna.sourceforge.jp/
+  (distributed with Wnn, see below) and canna.Canna can be found at:
+  https://osdn.net/projects/canna/
 
 There is a good input system: Wnn4.2.  Wnn 4.2 contains,
     xwnmo (|IM-server|)
diff --git a/runtime/doc/netbeans.txt b/runtime/doc/netbeans.txt
index a62123ce64..ee227b4753 100644
--- a/runtime/doc/netbeans.txt
+++ b/runtime/doc/netbeans.txt
@@ -1,4 +1,4 @@
-*netbeans.txt*  For Vim version 9.1.  Last change: 2023 Nov 26
+*netbeans.txt*  For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Gordon Prieur et al.
@@ -77,8 +77,8 @@ Initially just a Java IDE, NetBeans has had C, C++, and Fortran support added
 in recent releases.
 
 For more information visit the main NetBeans web site http://www.netbeans.org.
-The External Editor is now, unfortunately, declared obsolete.  See
- http://externaleditor.netbeans.org.
+The External Editor is now, unfortunately, declared obsolete.  See (link seems
+dead): http://externaleditor.netbeans.org.
 
 Sun Microsystems, Inc. also ships NetBeans under the name Sun ONE Studio.
 Visit http://www.sun.com for more information regarding the Sun ONE Studio
@@ -147,8 +147,9 @@ On MS-Windows:
 The Win32 support is now in beta stage.
 
 To use XPM signs on Win32 (e.g. when using with NetBeans) you can compile
-XPM by yourself or use precompiled libraries from http://iamphet.nm.ru/misc/
-(for MS Visual C++) or http://gnuwin32.sourceforge.net (for MinGW).
+XPM by yourself or use precompiled libraries from (link seems dead):
+http://iamphet.nm.ru/misc/ (for MS Visual C++) or
+http://gnuwin32.sourceforge.net (for MinGW).
 
 Enable debugging:
 -----------------
@@ -946,7 +947,8 @@ for details on downloading this module if your NetBeans release does not have
 it.
 
 For C, C++, and Fortran support you will also need the cpp module.  See
-http://cpp.netbeans.org for information regarding this module.
+http://cpp.netbeans.org (link seems dead) for information regarding this
+module.
 
 You can also download Sun ONE Studio from Sun Microsystems, Inc for a 30 day
 free trial.  See http://www.sun.com for further details.
diff --git a/runtime/doc/os_vms.txt b/runtime/doc/os_vms.txt
index 862f31d07f..4549c00189 100644
--- a/runtime/doc/os_vms.txt
+++ b/runtime/doc/os_vms.txt
@@ -1,4 +1,4 @@
-*os_vms.txt*    For Vim version 9.1.  Last change: 2023 Dec 14
+*os_vms.txt*    For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL
@@ -40,7 +40,6 @@ Or use one of the mirrors:
 
 You can download precompiled executables from:
 	http://www.polarhome.com/vim/
-	ftp://ftp.polarhome.com/pub/vim/
 
 To use the precompiled binary version, you need one of these archives:
 
diff --git a/runtime/doc/os_win32.txt b/runtime/doc/os_win32.txt
index bbe9940089..54c8e91bd0 100644
--- a/runtime/doc/os_win32.txt
+++ b/runtime/doc/os_win32.txt
@@ -1,4 +1,4 @@
-*os_win32.txt*  For Vim version 9.1.  Last change: 2023 Dec 04
+*os_win32.txt*  For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by George Reilly
@@ -250,8 +250,7 @@ A. Basically what you need is to put a tee program that will copy its input
    copy of tee (and a number of other GNU tools) at
    http://gnuwin32.sourceforge.net or http://unxutils.sourceforge.net
    Alternatively, try the more recent Cygnus version of the GNU tools at
-   http://www.cygwin.com  Other Unix-style tools for Win32 are listed at
-   http://directory.google.com/Top/Computers/Software/Operating_Systems/Unix/Win32/
+   http://www.cygwin.com
    When you do get a copy of tee, you'll need to add >
 	:set shellpipe=\|\ tee
 <  to your _vimrc.
diff --git a/runtime/doc/pi_netrw.txt b/runtime/doc/pi_netrw.txt
index 3efc60fcfc..aeaca0b807 100644
--- a/runtime/doc/pi_netrw.txt
+++ b/runtime/doc/pi_netrw.txt
@@ -1,4 +1,4 @@
-*pi_netrw.txt*  For Vim version 9.1.  Last change: 2024 May 08
+*pi_netrw.txt*  For Vim version 9.1.  Last change: 2024 May 11
 
 	    ------------------------------------------------
 	    NETRW REFERENCE MANUAL    by Charles E. Campbell
@@ -2033,11 +2033,7 @@ passwords:
     better way to do that: I can use a regular ssh account which uses a
     password to access the material without the need to key-in the password
     each time. It's good for security and convenience. I tried ssh public key
-    authorization + ssh-agent, implementing this, and it works! Here are two
-    links with instructions:
-
-    http://www.ibm.com/developerworks/library/l-keyc2/
-    http://sial.org/howto/openssh/publickey-auth/
+    authorization + ssh-agent, implementing this, and it works!
 
 
     Ssh hints:
diff --git a/runtime/doc/pi_tar.txt b/runtime/doc/pi_tar.txt
index 0ab111c283..5b317d6087 100644
--- a/runtime/doc/pi_tar.txt
+++ b/runtime/doc/pi_tar.txt
@@ -1,4 +1,4 @@
-*pi_tar.txt*	For Vim version 9.1.  Last change: 2022 Oct 17
+*pi_tar.txt*	For Vim version 9.1.  Last change: 2024 May 11
 
 		       +====================+
 		       | Tar File Interface |
@@ -164,7 +164,8 @@ Copyright 2005-2017:					*tar-copyright*
 	v2			* converted to use Vim7's new autoload feature
 				  by Bram Moolenaar
 	v1	(original)	* Michael Toren
-				  (see http://michael.toren.net/code/)
+				  (see http://michael.toren.net/code/
+				   link seems dead)
 
 ==============================================================================
 vim:tw=78:ts=8:noet:ft=help
diff --git a/runtime/doc/print.txt b/runtime/doc/print.txt
index 84fca44060..55a9c37b31 100644
--- a/runtime/doc/print.txt
+++ b/runtime/doc/print.txt
@@ -1,4 +1,4 @@
-*print.txt*     For Vim version 9.1.  Last change: 2022 Oct 01
+*print.txt*     For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -497,10 +497,11 @@ No CJK fonts are supplied with Vim.  There are some free Korean, Japanese, and
 Traditional Chinese fonts available at:
 
   http://examples.oreilly.com/cjkvinfo/adobe/samples/
+  https://resources.oreilly.com/examples/9781565922242/
 
 You can find descriptions of the various fonts in the read me file at
 
-  http://examples.oreilly.de/english_examples/cjkvinfo/adobe/00README
+  https://resources.oreilly.com/examples/9781565922242/-/blob/master/00README
 
 Please read your printer documentation on how to install new fonts.
 
@@ -591,7 +592,7 @@ There are three available versions:
 - GNU Ghostscript which is available under the GNU General Public License.  It
   can be obtained from:
 
-    ftp://mirror.cs.wisc.edu/pub/mirrors/ghost/gnu/
+    https://www.gnu.org/software/ghostscript
 
 - A commercial version for inclusion in commercial products.
 
@@ -616,10 +617,7 @@ X11
 - Ghostview.  Obtainable from:
 
     http://www.cs.wisc.edu/~ghost/gv/
-
-- gv.  Derived from Ghostview.  Obtainable from:
-
-    http://wwwthep.physik.uni-mainz.de/~plass/gv/
+    https://www.gnu.org/software/gv/
 
   Copies (possibly not the most recent) can be found at:
 
@@ -627,7 +625,8 @@ X11
 
 OpenVMS
 
-- Is apparently supported in the main code now (untested).  See:
+- Is apparently supported in the main code now (untested).
+  See (link seems dead):
 
     http://wwwthep.physik.uni-mainz.de/~plass/gv/
 
@@ -644,12 +643,6 @@ Linux
 
     http://www.cs.wisc.edu/~ghost/gsview/
 
-- BMV.  Different from Ghostview and gv in that it doesn't use X but svgalib.
-  Obtainable from:
-
-    ftp://sunsite.unc.edu/pub/Linux/apps/graphics/viewers/svga/bmv-1.2.tgz
-
-
 7.3 PSUtils
 
 PSUtils is a collection of utility programs for manipulating PostScript
diff --git a/runtime/doc/spell.txt b/runtime/doc/spell.txt
index dea3adb87a..ab3b120457 100644
--- a/runtime/doc/spell.txt
+++ b/runtime/doc/spell.txt
@@ -1,4 +1,4 @@
-*spell.txt*	For Vim version 9.1.  Last change: 2023 May 25
+*spell.txt*	For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -903,7 +903,7 @@ right encoding.
 				*spell-AUTHOR* *spell-EMAIL* *spell-COPYRIGHT*
 	NAME		Name of the language
 	VERSION		1.0.1  with fixes
-	HOME		http://www.myhome.eu
+	HOME		<URL>
 	AUTHOR		John Doe
 	EMAIL		john AT Doe DOT net
 	COPYRIGHT	LGPL
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index fbf48c6d76..bbdda4f9d3 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt*	For Vim version 9.1.  Last change: 2024 May 05
+*syntax.txt*	For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1483,9 +1483,9 @@ Two syntax highlighting files exist for Euphoria. One for Euphoria
 version 3.1.1, which is the default syntax highlighting file, and one for
 Euphoria version 4.0.5 or later.
 
-Euphoria version 3.1.1 (http://www.rapideuphoria.com/) is still necessary
-for developing applications for the DOS platform, which Euphoria version 4
-(http://www.openeuphoria.org/) does not support.
+Euphoria version 3.1.1 (http://www.rapideuphoria.com/ link seems dead) is
+still necessary for developing applications for the DOS platform, which
+Euphoria version 4 (http://www.openeuphoria.org/) does not support.
 
 The following file extensions are auto-detected as Euphoria file type:
 
@@ -1542,7 +1542,8 @@ Elixir.
 
 FLEXWIKI				*flexwiki.vim* *ft-flexwiki-syntax*
 
-FlexWiki is an ASP.NET-based wiki package available at http://www.flexwiki.com
+FlexWiki is an ASP.NET-based wiki package which used to be available at
+http://www.flexwiki.com
 NOTE: This site currently doesn't work, on Wikipedia is mentioned that
 development stopped in 2009.
 
diff --git a/runtime/doc/tagsrch.txt b/runtime/doc/tagsrch.txt
index d3d549ab2e..7091f835a4 100644
--- a/runtime/doc/tagsrch.txt
+++ b/runtime/doc/tagsrch.txt
@@ -546,7 +546,8 @@ JTags			For Java, in Java.  It can be found at
 			http://www.fleiner.com/jtags/.
 ptags.py		For Python, in Python.  Found in your Python source
 			directory at Tools/scripts/ptags.py.
-ptags			For Perl, in Perl.  It can be found at
+ptags			For Perl, in Perl.  It can be found at (link seems
+			dead):
 			http://www.eleves.ens.fr:8080/home/nthiery/Tags/.
 gnatxref		For Ada.  See http://www.gnuada.org/.  gnatxref is
 			part of the gnat package.
diff --git a/runtime/doc/test_urls.vim b/runtime/doc/test_urls.vim
index e23f87966b..b75dc29c48 100644
--- a/runtime/doc/test_urls.vim
+++ b/runtime/doc/test_urls.vim
@@ -12,11 +12,11 @@ func Test_check_URLs()
   else
     let s:outdev = '/dev/null'
   endif
-" Restorer: For Windows users. If "curl" or "weget" is installed on the system
-" but not in %PATH%, add the full routes for them to this environment variable.
+" Restorer: For Windows users. If "curl" or "wget" is installed on the system
+" but not in %PATH%, add the full path to them to %PATH% environment variable.
   if executable('curl')
     " Note: does not follow redirects!
-    let s:command1 = 'curl --silent --fail --output ' ..s:outdev.. ' --head '
+    let s:command1 = 'curl --silent --max-time 5 --fail --output ' ..s:outdev.. ' --head '
     let s:command2 = ""
   elseif executable('wget')
     " Note: only allow a couple of redirects
diff --git a/runtime/doc/todo.txt b/runtime/doc/todo.txt
index 8712008cfe..9b15d001de 100644
--- a/runtime/doc/todo.txt
+++ b/runtime/doc/todo.txt
@@ -1,4 +1,4 @@
-*todo.txt*      For Vim version 9.1.  Last change: 2024 Mar 28
+*todo.txt*      For Vim version 9.1.  Last change: 2024 May 11
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1710,7 +1710,8 @@ Also Vundle: https://github.com/gmarik/vundle
 Or minpac: https://github.com/k-takata/minpac, since it leverages the builtin
 package feature.
 Long message about this from ZyX, 2014 Mar 23.  And following replies.
-Also see http://vim-wiki.mawercer.de/wiki/topic/vim%20plugin%20managment.html
+Also see (link seems dead):
+http://vim-wiki.mawercer.de/wiki/topic/vim%20plugin%20managment.html
 User view:
 - Support multiple sources, basically any http:// URL. Or a central place that
   will work for everybody (github?  redirects from vim.org?).
@@ -2441,7 +2442,7 @@ Problem with 'ts' set to 9 and 'showbreak' to ">>>". (Matthew Winn, 2007 Oct
 Would be more consistent when an existing tab is re-used. (Tony Mechelynck)
 
 Using Aap to build Vim: add remarks about how to set personal preferences.
-Example on http://www.calmar.ws/tmp/aap.html
+Example on http://www.calmar.ws/tmp/aap.html (link seems dead)
 
 When 'diffopt' has "context:0" a single deleted line causes two folds to merge
 and mess up syncing. (Austin Jennings, 2008 Jan 31)
@@ -2472,7 +2473,7 @@ Asked about latest version: 0.77.1 is on www.vim.org.
 More AmigaOS4 patches. (Peter Bengtsson, Nov 9)
 
 Amiga patches with vbcc. (Adrien Destugues, 2010 Aug 30)
-http://pulkomandy.ath.cx/drop/vim73_vbcc_amiga.diff
+(link seems dead): http://pulkomandy.ath.cx/drop/vim73_vbcc_amiga.diff
 
 Problem with compound words?  (Bert, 2008 May 6)
 No warning for when flags are defined after they are used in an affix.
@@ -2542,8 +2543,9 @@ Win32: Patch for cscope external command. (Mike Williams, 2007 Aug 7)
 
 Win32: XPM support only works with path without spaces.  Patch by Mathias
 Michaelis, 2006 Jun 9.  Another patch for more path names, 2006 May 31.
-New version: http://members.tcnet.ch/michaelis/vim/patches.zip (also for other
-patches by Mathias, see mail Feb 22)
+New version (link seems dead):
+http://members.tcnet.ch/michaelis/vim/patches.zip
+(also for other patches by Mathias, see mail Feb 22)
 
 Win32: compiling with normal features and OLE fails.  Patch by Mathias
 Michaelis, 2006 Jun 4.
@@ -3068,7 +3070,7 @@ Win32 GUI known bugs:
     the screen.
 8   The -P argument doesn't work very well with many MDI applications.
     The last argument of CreateWindowEx() should be used, see MSDN docs.
-    Tutorial: http://win32assembly.online.fr/tut32.html
+    Tutorial (link seems dead): http://win32assembly.online.fr/tut32.html
 6   Win32 GUI: With "-u NONE -U NONE" and doing "CTRL-W v" "CTRL-W o", the ":"
     of ":only" is highlighted like the cursor.  (Lipelis)
 8   When 'encoding' is "utf-8", should use 'guifont' for both normal and wide
@@ -3470,7 +3472,7 @@ Macintosh:
     way to avoid using the builtin termcap.
 8   Xterm sends ^[[H for <Home> and ^[[F for <End> in some mode.  Also
     recognize these keys?  Mostly useful for xterm simulators, like gnometerm.
-    See http://dickey.his.com/xterm/xterm.faq.html#xterm_pc_style.
+    See https://invisible-island.net/xterm/xterm.faq.html#xterm_pc_style
 8   '[ and '] should be set to start/end of line when using a linewise operator
     (e.g., ":w").
 8   CTRL-A can't handle big "long" numbers, they become negative.  Check for
@@ -3759,8 +3761,8 @@ Spell checking:
     What does MAXNGRAMSUGS do?
     Is COMPLEXPREFIXES necessary when we have flags for affixes?
 -   There is no Finnish spell checking file.  For openoffice Voikko is now
-    used, which is based on Malaga: http://home.arcor.de/bjoern-beutel/malaga/
-    (Teemu Likonen)
+    used, which is based on Malaga (link seems dead):
+    http://home.arcor.de/bjoern-beutel/malaga/ (Teemu Likonen)
 8   ":mkspell" still takes much too long in Hungarian dictionary from
     hunspell.  Only solution appears to be to postpone secondary suffixes.
 8   Handle postponed prefix with COMPOUNDPERMITFLAG or COMPOUNDFORBIDFLAG.
@@ -3816,7 +3818,7 @@ Spell checking:
     syntax items (to add @Spell).
     Add ":syntax contains {pattern} add=@Spell" command?  A bit like ":syn
     cluster" but change the contains list directly for matching syntax items.
--   References: MySpell library (in OpenOffice.org).
+-   References: MySpell library (in OpenOffice.org), (links seem dead):
 	http://spellchecker.mozdev.org/source.html
 	http://whiteboard.openoffice.org/source/browse/whiteboard/lingucomponent/source/spellcheck/myspell/
       author: Kevin Hendricks <kevin.hendricks@sympatico.ca>
@@ -3974,8 +3976,9 @@ Multi-byte characters:
     could be entered.  E.g., for "f" command.  But not in Normal mode.  Sort
     of opposite of 'langmap'.  Use ":amap" command?
 -   When breaking a line, take properties of multibyte characters into
-    account.  The "linebreak" program from Bruno Haible can do it:
-    ftp://ftp.ilog.fr/pub/Users/haible/gnu/linebreak-0.1.tar.gz
+    account.  The "linebreak" program from Bruno Haible can do it, this
+    is now part of gnulib module unilbrk:
+    https://www.gnu.org/software/gnulib/MODULES.html
     But it's very complicated...
 -   Problem with 'langmap' being used on the rhs of a mapping. (Nikolai
     Weibull, 2008 May 14).
@@ -4773,10 +4776,10 @@ Omni completion:
 		ctags -f $allTagsFile --fields=+aiKmnsSz --language-force=C++ --C++-kinds=+cefgmnpsut-dlux -u $files
 	www.vim.org script 1213 (Java Development Environment) (Fuchuan Wang)
 	IComplete: http://www.vim.org/scripts/script.php?script_id=1265
-	    and http://stud4.tuwien.ac.at/~e0125672/icomplete/
 	http://cedet.sourceforge.net/intellisense.shtml (for Emacs)
 	Ivan Villanueva has something for Java.
-	Emacs: http://www.xref-tech.com/xrefactory/more_c_completion.html
+	Emacs (link seems dead):
+	http://www.xref-tech.com/xrefactory/more_c_completion.html
 	Completion in .NET framework SharpDevelop: http://www.icsharpcode.net
 -   Pre-expand abbreviations, show which abbrevs would match?
 
diff --git a/runtime/doc/usr_01.txt b/runtime/doc/usr_01.txt
index fafb242b0b..fdf1b5386b 100644
--- a/runtime/doc/usr_01.txt
+++ b/runtime/doc/usr_01.txt
@@ -1,4 +1,4 @@
-*usr_01.txt*	For Vim version 9.1.  Last change: 2023 May 12
+*usr_01.txt*	For Vim version 9.1.  Last change: 2024 May 11
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -165,7 +165,7 @@ The Vim user manual and reference manual are Copyright (c) 1988 by Bram
 Moolenaar.  This material may be distributed only subject to the terms and
 conditions set forth in the Open Publication License, v1.0 or later.  The
 latest version is presently available at:
-	     http://www.opencontent.org/openpub/
+	     https://opencontent.org/openpub/
 
 People who contribute to the manuals must agree with the above copyright
 notice.