From: Stefan Kangas <stefankangas@gmail.com>
Date: Sat, 15 Oct 2022 09:17:51 +0000 (+0200)
Subject: ; Prefer HTTPS to HTTP in many URLs
X-Git-Tag: emacs-29.0.90~1616^2~609
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=3187225416c66061b67e89092addc15cad2202b9;p=emacs.git

; Prefer HTTPS to HTTP in many URLs
---

diff --git a/ChangeLog.1 b/ChangeLog.1
index cd31aacafb4..35533d60fff 100644
--- a/ChangeLog.1
+++ b/ChangeLog.1
@@ -5685,7 +5685,7 @@
 	(__mktime_internal): Use it systematically for all isdst comparisons.
 	This completes the fix for libc BZ #6723, and removes the need for
 	normalizing tm_isdst.
-	See <http://sourceware.org/bugzilla/show_bug.cgi?id=6723>
+	See <https://sourceware.org/bugzilla/show_bug.cgi?id=6723>
 	(not_equal_tm) [DEBUG]: Use isdst_differ here, too.
 
 	mktime: fix some integer overflow issues and sidestep the rest
diff --git a/ChangeLog.3 b/ChangeLog.3
index a09dc29cbec..f2245a4ed53 100644
--- a/ChangeLog.3
+++ b/ChangeLog.3
@@ -185373,7 +185373,7 @@
 
 	* lisp/image.el (image-type-header-regexps):
 	Allow two or more CRs or LFs in initial whitespace sequences.  See:
-	http://netpbm.sourceforge.net/doc/pbm.html
+	https://netpbm.sourceforge.net/doc/pbm.html
 
 2017-10-16  Paul Eggert  <eggert@cs.ucla.edu>
 
@@ -197097,7 +197097,7 @@
 	Clang on macOS warns about these with -Wtautological-compare.  POSIX
 	guarantees that rlim_t is
 	unsigned (cf.
-	http://pubs.opengroup.org/onlinepubs/009695399/basedefs/sys/resource.h.html),
+	https://pubs.opengroup.org/onlinepubs/009695399/basedefs/sys/resource.h.html),
 	so these resource limits can never be negative.
 
 	* src/emacs.c (main): Remove tautological comparisons.
@@ -199197,7 +199197,7 @@
 
 	' is commonly used as an apostrophe in the prose sections of spec
 	files, which was erroneously highlighted as strings. See for example
-	http://kmymoney2.sourceforge.net/phb/rpm-example.html
+	https://kmymoney2.sourceforge.net/phb/rpm-example.html
 
 	* lisp/progmodes/sh-script.el (sh-mode-syntax-table): Treat ' as
 	  punctuation in RPM spec files.
diff --git a/INSTALL b/INSTALL
index 95d2dbda80c..c0323f770ba 100644
--- a/INSTALL
+++ b/INSTALL
@@ -187,7 +187,7 @@ X11 is being used.
     libz (for PNG):   https://www.zlib.net/
   X libjpeg for JPEG: https://www.ijg.org/
   X libtiff for TIFF: http://www.simplesystems.org/libtiff/
-  X libgif for GIF:   http://giflib.sourceforge.net/
+  X libgif for GIF:   https://giflib.sourceforge.net/
     librsvg2 for SVG: https://wiki.gnome.org/Projects/LibRsvg
     libwebp for WebP: https://developers.google.com/speed/webp/
 
diff --git a/admin/charsets/mapfiles/stdenc.txt b/admin/charsets/mapfiles/stdenc.txt
index e39486a3195..1c898bac0ba 100644
--- a/admin/charsets/mapfiles/stdenc.txt
+++ b/admin/charsets/mapfiles/stdenc.txt
@@ -54,7 +54,7 @@
 #    
 #    [v0.1, 5 May 1995] First release.
 #
-#  Use the Unicode reporting form <http://www.unicode.org/reporting.html>
+#  Use the Unicode reporting form <https://www.unicode.org/reporting.html>
 #    for any questions or comments or to report errors in the data.
 #
 0020	20	# SPACE	# space
diff --git a/admin/charsets/mapfiles/symbol.txt b/admin/charsets/mapfiles/symbol.txt
index b98baf6cf0c..0a5aac8b611 100644
--- a/admin/charsets/mapfiles/symbol.txt
+++ b/admin/charsets/mapfiles/symbol.txt
@@ -57,7 +57,7 @@
 #
 #    [v0.1, 5 May 1995] First release.
 #
-#  Use the Unicode reporting form <http://www.unicode.org/reporting.html>
+#  Use the Unicode reporting form <https://www.unicode.org/reporting.html>
 #    for any questions or comments or to report errors in the data.
 #
 0020	20	# SPACE	# space
diff --git a/admin/unidata/README b/admin/unidata/README
index 2da01402b70..2d421dfb6bf 100644
--- a/admin/unidata/README
+++ b/admin/unidata/README
@@ -6,31 +6,31 @@ copyright.html.
 The names, URLs, and dates for these files are as follows.
 
 BidiBrackets.txt
-http://www.unicode.org/Public/UNIDATA/BidiBrackets.txt
+https://www.unicode.org/Public/UNIDATA/BidiBrackets.txt
 2021-06-30
 
 BidiMirroring.txt
-http://www.unicode.org/Public/UNIDATA/BidiMirroring.txt
+https://www.unicode.org/Public/UNIDATA/BidiMirroring.txt
 2021-08-08
 
 Blocks.txt
-http://www.unicode.org/Public/8.0.0/ucd/Blocks.txt
+https://www.unicode.org/Public/8.0.0/ucd/Blocks.txt
 2021-01-22
 
 IVD_Sequences.txt
-http://www.unicode.org/ivd/
+https://www.unicode.org/ivd/
 2020-11-06
 
 NormalizationTest.txt
-http://www.unicode.org/Public/UNIDATA/NormalizationTest.txt
+https://www.unicode.org/Public/UNIDATA/NormalizationTest.txt
 2021-05-28
 
 SpecialCasing.txt
-http://unicode.org/Public/UNIDATA/SpecialCasing.txt
+https://unicode.org/Public/UNIDATA/SpecialCasing.txt
 2021-03-08
 
 UnicodeData.txt
-http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
+https://www.unicode.org/Public/UNIDATA/UnicodeData.txt
 2021-07-06
 
 emoji-data.txt
diff --git a/admin/unidata/blocks.awk b/admin/unidata/blocks.awk
index 1c571feff38..48a14ec3ca9 100755
--- a/admin/unidata/blocks.awk
+++ b/admin/unidata/blocks.awk
@@ -23,7 +23,7 @@
 ### Commentary:
 
 ## This script takes as input Unicode's Blocks.txt
-## (http://www.unicode.org/Public/UNIDATA/Blocks.txt)
+## (https://www.unicode.org/Public/UNIDATA/Blocks.txt)
 ## and produces output for Emacs's lisp/international/charscript.el.
 
 ## It lumps together all the blocks belonging to the same language.
diff --git a/admin/unidata/copyright.html b/admin/unidata/copyright.html
index 0ae01c11ad1..567c54e72ac 100644
--- a/admin/unidata/copyright.html
+++ b/admin/unidata/copyright.html
@@ -13,7 +13,7 @@
 <title>Unicode Terms of Use</title>
 <link rel="stylesheet" type="text/css"
 
-href="http://www.unicode.org/webscripts/standard_styles.css">
+href="https://www.unicode.org/webscripts/standard_styles.css">
 
 <style type="text/css">
 pre {
@@ -32,8 +32,8 @@ pre {
       <td colspan="2">
       <table width="100%" border="0" cellpadding="0" cellspacing="0">
         <tr>
-          <td class="icon" style="width:38px; height:35px"><a href="http://www.unicode.org/"><img border="0"
-      src="http://www.unicode.org/webscripts/logo60s2.gif" align="middle" alt="[Unicode]" width="34" height="33"></a></td>
+          <td class="icon" style="width:38px; height:35px"><a href="https://www.unicode.org/"><img border="0"
+      src="https://www.unicode.org/webscripts/logo60s2.gif" align="middle" alt="[Unicode]" width="34" height="33"></a></td>
           <td class="icon" style="vertical-align:middle;"> &nbsp;<a class="bar"
           href="https://www.unicode.org/copyright.html"><font size="3">Terms of Use</font></a></td>
           <td class="bar"><a href="https://www.unicode.org/main.html" class="bar">Tech Site</a>
@@ -112,7 +112,7 @@ pre {
 
             <p>For the general privacy policy governing access to this site, see
             the&nbsp;
-            <a href="http://www.unicode.org/policies/privacy_policy.html">
+            <a href="https://www.unicode.org/policies/privacy_policy.html">
             Unicode Privacy Policy</a>.</p>
 
             <ol type="A">
@@ -158,7 +158,7 @@ http://site.icu-project.org/download/
                 specifications of rights and restrictions of use. For the book
                 editions (Unicode 5.0 and earlier), these are found on the back
                 of the
-				<a href="http://www.unicode.org/versions/Unicode5.0.0/Title.pdf">title page</a>.</li>
+                                <a href="https://www.unicode.org/versions/Unicode5.0.0/Title.pdf">title page</a>.</li>
                 <li>
                 The Unicode PDF <a href="https://www.unicode.org/charts/">online code charts</a> carry specific restrictions. Those restrictions are incorporated as the
                 first page of each PDF code chart.</li>
@@ -224,7 +224,7 @@ http://site.icu-project.org/download/
               <li><u><a name="5"></a>Trademarks &amp; Logos</u>
                 <ol>
                 <li>The Unicode Word Mark and the Unicode Logo are trademarks of Unicode, Inc.  “The Unicode Consortium” and “Unicode, Inc.” are trade names of Unicode, Inc.  Use of the information and materials found on this website indicates your acknowledgement of Unicode, Inc.’s exclusive worldwide rights in the Unicode Word Mark, the Unicode Logo, and the Unicode trade names.</li>
-<li><a href="http://www.unicode.org/policies/logo_policy.html">The Unicode Consortium Name and Trademark Usage Policy</a> (“Trademark Policy”) are incorporated herein by reference and you agree to abide by the provisions of the Trademark Policy, which may be changed from time to time in the sole discretion of Unicode, Inc.</li>
+<li><a href="https://www.unicode.org/policies/logo_policy.html">The Unicode Consortium Name and Trademark Usage Policy</a> (“Trademark Policy”) are incorporated herein by reference and you agree to abide by the provisions of the Trademark Policy, which may be changed from time to time in the sole discretion of Unicode, Inc.</li>
 <li>All third party trademarks referenced herein are the property of their respective owners.</li>
               </ol>
               </li>
@@ -270,15 +270,15 @@ http://site.icu-project.org/download/
               <center>
               <table cellspacing="0" cellpadding="0" border="0" id="table2">
                 <tr>
-                  <td><a href="http://www.unicode.org/copyright.html">
-                  <img src="http://www.unicode.org/img/hb_notice.gif"
+                  <td><a href="https://www.unicode.org/copyright.html">
+                  <img src="https://www.unicode.org/img/hb_notice.gif"
                   border="0" alt="Access to Copyright and terms of use"
                   width="216" height="50"></a></td>
                 </tr>
               </table>
 
                 <script language="Javascript" type="text/javascript"
-              src="http://www.unicode.org/webscripts/lastModified.js">
+              src="https://www.unicode.org/webscripts/lastModified.js">
                 </script>
 
               </center>
diff --git a/doc/misc/cc-mode.texi b/doc/misc/cc-mode.texi
index 1f12c30b1f8..ab41737794c 100644
--- a/doc/misc/cc-mode.texi
+++ b/doc/misc/cc-mode.texi
@@ -580,7 +580,7 @@ you are going to be editing AWK files, @file{README} describes how to
 configure your (X)Emacs so that @ccmode{} will supersede the obsolete
 @code{awk-mode.el} which might have been supplied with your (X)Emacs.
 @ccmode{} might not work with older versions of Emacs or XEmacs.  See
-the @ccmode{} release notes at @uref{http://cc-mode.sourceforge.net}
+the @ccmode{} release notes at @uref{https://cc-mode.sourceforge.net}
 for the latest information on Emacs version and package compatibility
 (@pxref{Updating CC Mode}).
 
@@ -3170,7 +3170,7 @@ E. Jones' Filladapt package@footnote{It's available from
 lack a feature that makes it work suboptimally when
 @code{c-comment-prefix-regexp} matches the empty string (which it does
 by default).  A patch for that is available from
-@uref{http://cc-mode.sourceforge.net/,, the CC Mode web site}.},
+@uref{https://cc-mode.sourceforge.net/,, the CC Mode web site}.},
 @c 2005/11/22:  The above is still believed to be the case.
 which handles things like bulleted lists nicely.  There's a convenience
 function @code{c-setup-filladapt} that tunes the relevant variables in
@@ -7583,7 +7583,7 @@ have old versions of @ccmode{} and so should be upgraded.  Access to the
 compatibility, etc.@: are all available on the web site:
 
 @quotation
-@uref{http://cc-mode.sourceforge.net/}
+@uref{https://cc-mode.sourceforge.net/}
 @end quotation
 
 
@@ -7617,7 +7617,7 @@ the GNU Bug Tracker at @url{https://debbugs.gnu.org}, then sends it on
 to @email{bug-cc-mode@@gnu.org}.  You can also send reports, other
 questions, and suggestions (kudos?@: @t{;-)} to that address.  It's a
 mailing list which you can join or browse an archive of; see the web site at
-@uref{http://cc-mode.sourceforge.net/} for further details.
+@uref{https://cc-mode.sourceforge.net/} for further details.
 
 @cindex announcement mailing list
 If you want to get announcements of new @ccmode{} releases, send the
diff --git a/doc/misc/efaq-w32.texi b/doc/misc/efaq-w32.texi
index 46c257e42e5..b58f6be7581 100644
--- a/doc/misc/efaq-w32.texi
+++ b/doc/misc/efaq-w32.texi
@@ -1744,7 +1744,7 @@ date now, so no concrete pointers are available.
 
 You will need an implementation of TeX for Windows.
 A number of implementations are listed on the
-@uref{http://www.tug.org/interest.html#free, TeX Users Group} website.
+@uref{https://www.tug.org/interest.html#free, TeX Users Group} website.
 
 @node Spell check
 @section How do I perform spell checks?
@@ -1899,7 +1899,7 @@ Christopher Payne wrote a Visual Studio add-in that makes Emacs the
 default text editor, this has now been taken over by Jeff Paquette.
 See the following two URLs for details:
 @itemize
-@item @uref{http://sourceforge.net/projects/visemacs/} for the latest version.
+@item @uref{https://sourceforge.net/projects/visemacs/} for the latest version.
 @item @uref{http://www.smathers.net/VisEmacs.htm} for notes on usage.
 @end itemize
 
@@ -2039,7 +2039,7 @@ this option is set. (I don't see it on VC++ 4.0.)
 @cindex Borland C++, integration with Emacs
 
 Jonathan Arnold has written an
-@uref{http://www.buddydog.org/C++Builder/c++builder.html, EmacsEdit
+@uref{https://www.buddydog.org/C++Builder/c++builder.html, EmacsEdit
 ``expert''} for interfacing C++ Builder and Emacs.
 
 @node Version control
@@ -2194,7 +2194,7 @@ to port software to Windows.
 @cindex image libraries, gnuwin32
 @cindex image libraries, development
 
-@uref{http://gnuwin32.sourceforge.net/}
+@uref{https://gnuwin32.sourceforge.net/}
 
 GnuWin32 provides precompiled native Windows ports of a wide selection
 of Free software and libraries.  Unfortunately, the ports are
diff --git a/doc/misc/efaq.texi b/doc/misc/efaq.texi
index 0da397919db..23e3b086a3a 100644
--- a/doc/misc/efaq.texi
+++ b/doc/misc/efaq.texi
@@ -3622,13 +3622,13 @@ To build Emacs from source for MS-DOS, see the instructions in the file
 on plain DOS, and also on all versions of MS-Windows from version 3.X
 onwards, including Windows XP and Vista. Pre-built binaries may be
 available at
-@uref{http://www.delorie.com/pub/djgpp/current/v2gnu/emacs.README}
+@uref{https://www.delorie.com/pub/djgpp/current/v2gnu/emacs.README}
 
 For a list of other implementations of Emacs (and Emacs
 look-alikes), consult the list of ``Emacs implementations and literature,''
 available at
 
-@uref{http://www.finseth.com/emacs.html}
+@uref{https://www.finseth.com/emacs.html}
 
 Note that while many of these programs look similar to Emacs, they often
 lack certain features, such as the Emacs Lisp extension language.
@@ -3757,7 +3757,7 @@ Various spell-checkers are compatible with Emacs, including:
 @table @b
 
 @item Hunspell
-@uref{http://hunspell.sourceforge.net/}
+@uref{https://hunspell.github.io/}
 
 @item GNU Aspell
 @uref{http://aspell.net/}
diff --git a/doc/misc/gnus-faq.texi b/doc/misc/gnus-faq.texi
index 3aad985c5a4..7cb5621b694 100644
--- a/doc/misc/gnus-faq.texi
+++ b/doc/misc/gnus-faq.texi
@@ -1330,7 +1330,7 @@ details.
 
 However, what you really want is the Insidious Big Brother
 Database bbdb.  Get it from
-@uref{http://bbdb.sourceforge.net/, bbdb's website}.
+@uref{https://bbdb.sourceforge.net/, bbdb's website}.
 Now place the following in @file{~/.gnus.el}, to activate bbdb for Gnus:
 
 @example
@@ -1782,13 +1782,13 @@ when you're online.
 Let's talk about Unix systems first: For the news part,
 the easiest solution is a small nntp server like
 @uref{https://www.leafnode.org/, Leafnode} or
-@uref{http://patrik.iki.fi/sn/, sn},
+@uref{https://patrik.iki.fi/sn/, sn},
 of course you can also install a full featured news
 server like
 @uref{https://www.isc.org/othersoftware/, inn}.
 Then you want to fetch your Mail, popular choices
 are @uref{https://www.fetchmail.info/, fetchmail}
-and @uref{http://pyropus.ca/software/getmail/, getmail}.
+and @uref{https://pyropus.ca/software/getmail/, getmail}.
 You should tell those to write the mail to your disk and
 Gnus to read it from there.  Last but not least the mail
 sending part: This can be done with every MTA like
diff --git a/doc/misc/gnus.texi b/doc/misc/gnus.texi
index b1331e79bf4..4180b9be108 100644
--- a/doc/misc/gnus.texi
+++ b/doc/misc/gnus.texi
@@ -8045,7 +8045,7 @@ to a string containing the default command and options (default
 @findex gnus-summary-muttprint
 @vindex gnus-summary-muttprint-program
 Save the current article into muttprint.  That is, print it using the
-external program @uref{http://muttprint.sourceforge.net/,
+external program @uref{https://muttprint.sourceforge.net/,
 Muttprint}.  The program name and options to use is controlled by the
 variable @code{gnus-summary-muttprint-program}.
 (@code{gnus-summary-muttprint}).
@@ -9343,7 +9343,7 @@ Use Gnus rendered based on w3m.
 Use @uref{http://emacs-w3m.namazu.org/, emacs-w3m}.
 
 @item w3m-standalone
-Use @uref{http://w3m.sourceforge.net/, w3m}.
+Use @uref{https://w3m.sourceforge.net/, w3m}.
 
 @item links
 Use @uref{http://links.twibright.com/, Links}.
@@ -13602,7 +13602,7 @@ Here's the method for a public spool:
 If you are behind a firewall and only have access to the @acronym{NNTP}
 server from the firewall machine, you can instruct Gnus to @code{rlogin}
 on the firewall machine and connect with
-@uref{http://netcat.sourceforge.net/, netcat} from there to the
+@uref{https://netcat.sourceforge.net/, netcat} from there to the
 @acronym{NNTP} server.
 Doing this can be rather fiddly, but your virtual server definition
 should probably look something like this:
@@ -23794,7 +23794,7 @@ On a GNU/Linux system, the @code{display} program is included in the
 ImageMagick package.  For external conversion programs look for packages
 with names like @code{netpbm}, @code{libgr-progs} and @code{compface}.
 On Windows, you may use the packages @code{netpbm} and @code{compface}
-from @url{http://gnuwin32.sourceforge.net}.  You need to add the
+from @url{https://gnuwin32.sourceforge.net}.  You need to add the
 @code{bin} directory to your @code{PATH} environment variable.
 @c In fact only the following DLLs and binaries seem to be required:
 @c compface1.dll uncompface.exe libnetpbm10.dll icontopbm.exe
diff --git a/doc/misc/mh-e.texi b/doc/misc/mh-e.texi
index ffb219b7d49..1a80c62edba 100644
--- a/doc/misc/mh-e.texi
+++ b/doc/misc/mh-e.texi
@@ -7540,8 +7540,8 @@ Allowlisted message face
 @cindex spam filters, bogofilter
 
 MH-E depends on @uref{https://spamassassin.apache.org/, SpamAssassin},
-@uref{http://bogofilter.sourceforge.net/, bogofilter}, or
-@uref{http://spamprobe.sourceforge.net/, SpamProbe} to throw the dreck
+@uref{https://bogofilter.sourceforge.net/, bogofilter}, or
+@uref{https://spamprobe.sourceforge.net/, SpamProbe} to throw the dreck
 away. This chapter describes briefly how to configure these programs
 to work well with MH-E and how to use MH-E's interface that provides
 continuing education for these programs.
@@ -7721,7 +7721,7 @@ done by adding the following to your @file{crontab}:
 
 Bogofilter is a Bayesian spam filtering program. Get it from your
 local distribution or from the
-@uref{http://bogofilter.sourceforge.net/, bogofilter web site}.
+@uref{https://bogofilter.sourceforge.net/, bogofilter web site}.
 
 Bogofilter is taught by running:
 
@@ -7791,7 +7791,7 @@ bogofilter.
 @cindex spam filters, SpamProbe
 
 SpamProbe is a Bayesian spam filtering program. Get it from your local
-distribution or from the @uref{http://spamprobe.sourceforge.net,
+distribution or from the @uref{https://spamprobe.sourceforge.net,
 SpamProbe web site}.
 
 To use SpamProbe, add the following recipes to @file{~/.procmailrc}:
@@ -8633,7 +8633,7 @@ via SourceForge (@pxref{Bug Reports}).
 @cindex FAQ
 @cindex MH FAQ
 
-The article @uref{http://www.newt.com/faq/mh.html, @cite{MH Frequently
+The article @uref{https://www.newt.com/faq/mh.html, @cite{MH Frequently
 Asked Questions (FAQ) with Answers}} appears monthly in the newsgroup
 @samp{comp.mail.mh}. While very little is there that deals with MH-E
 specifically, there is an incredible wealth of material about MH
diff --git a/doc/misc/org.org b/doc/misc/org.org
index e3ef9553480..ae3ca0b64f3 100644
--- a/doc/misc/org.org
+++ b/doc/misc/org.org
@@ -3234,7 +3234,7 @@ options:
 
 | Link Type  | Example                                                  |
 |------------+----------------------------------------------------------|
-| http       | =http://staff.science.uva.nl/c.dominik/=                 |
+| http       | =https://staff.science.uva.nl/c.dominik/=                |
 | https      | =https://orgmode.org/=                                   |
 | doi        | =doi:10.1000/182=                                        |
 | file       | =file:/home/dominik/images/jupiter.jpg=                  |
@@ -3567,7 +3567,7 @@ replacement text.  Here is an example:
       '(("bugzilla"        . "http://10.1.2.9/bugzilla/show_bug.cgi?id=")
         ("Nu Html Checker" . "https://validator.w3.org/nu/?doc=%h")
 	("duckduckgo"      . "https://duckduckgo.com/?q=%s")
-        ("omap"            . "http://nominatim.openstreetmap.org/search?q=%s&polygon=1")
+        ("omap"            . "https://nominatim.openstreetmap.org/search?q=%s&polygon=1")
         ("ads"             . "https://ui.adsabs.harvard.edu/search/q=%20author%3A\"%s\"")))
 #+end_src
 
@@ -3596,7 +3596,7 @@ can define them in the file with
 
 #+cindex: @samp{LINK}, keyword
 #+begin_example
-,#+LINK: bugzilla  http://10.1.2.9/bugzilla/show_bug.cgi?id=
+,#+LINK: bugzilla  https://10.1.2.9/bugzilla/show_bug.cgi?id=
 ,#+LINK: duckduckgo https://duckduckgo.com/?q=%s
 #+end_example
 
@@ -13642,7 +13642,7 @@ not have descriptions, such as these links =[[file:img.jpg]]= or
 =[[./img.jpg]]=, as direct image insertions in the final PDF output.  In
 the PDF, they are no longer links but actual images embedded on the
 page.  The LaTeX export back-end uses =\includegraphics= macro to
-insert the image.  But for TikZ (http://sourceforge.net/projects/pgf/)
+insert the image.  But for TikZ (https://sourceforge.net/projects/pgf/)
 images, the back-end uses an ~\input~ macro wrapped within
 a ~tikzpicture~ environment.
 
@@ -13982,7 +13982,7 @@ some text in German...
 #+cindex: Markdown export
 
 The Markdown export back-end, "md", converts an Org file to Markdown
-format, as defined at http://daringfireball.net/projects/markdown/.
+format, as defined at https://daringfireball.net/projects/markdown/.
 
 Since it is built on top of the HTML back-end (see [[*HTML Export]]), it
 converts every Org construct not defined in Markdown syntax, such as
@@ -22053,7 +22053,7 @@ MathJax are processed.  When dvipng, dvisvgm, or ImageMagick suite is
 used to create images, any LaTeX environment is handled.
 
 [fn:112] These are respectively available at
-[[http://sourceforge.net/projects/dvipng/]], [[http://dvisvgm.bplaced.net/]]
+[[https://sourceforge.net/projects/dvipng/]], [[http://dvisvgm.bplaced.net/]]
 and from the ImageMagick suite.  Choose the converter by setting the
 variable ~org-preview-latex-default-process~ accordingly.
 
@@ -22123,9 +22123,9 @@ semantic relevance.
 
 [fn:130] Please note that exported formulas are part of an HTML
 document, and that signs such as =<=, =>=, or =&= have special
-meanings.  See [[http://docs.mathjax.org/en/latest/tex.html#tex-and-latex-in-html-documents][MathJax TeX and LaTeX support]].
+meanings.  See [[https://docs.mathjax.org/en/latest/tex.html#tex-and-latex-in-html-documents][MathJax TeX and LaTeX support]].
 
-[fn:131] See [[http://docs.mathjax.org/en/latest/tex.html#tex-extensions][TeX and LaTeX extensions]] in the [[http://docs.mathjax.org][MathJax manual]] to learn
+[fn:131] See [[https://docs.mathjax.org/en/latest/tex.html#tex-extensions][TeX and LaTeX extensions]] in the [[https://docs.mathjax.org][MathJax manual]] to learn
 about extensions.
 
 [fn:132] If the classes on TODO keywords and tags lead to conflicts,
@@ -22140,14 +22140,14 @@ as latexmk, can select the correct bibliography compiler.
 which requires the flag =-shell-escape= to be added to
 ~org-latex-pdf-process~.
 
-[fn:135] See [[http://docs.oasis-open.org/office/v1.2/OpenDocument-v1.2.html][Open Document Format for Office Applications
+[fn:135] See [[https://docs.oasis-open.org/office/v1.2/OpenDocument-v1.2.html][Open Document Format for Office Applications
 (OpenDocument) Version 1.2]].
 
 [fn:136] See [[http://www.mathtoweb.com/cgi-bin/mathtoweb_home.pl][MathToWeb]].
 
-[fn:137] See [[http://dlmf.nist.gov/LaTeXML/]].
+[fn:137] See [[https://dlmf.nist.gov/LaTeXML/]].
 
-[fn:138] [[http://docs.oasis-open.org/office/v1.2/OpenDocument-v1.2.html][OpenDocument-v1.2 Specification]]
+[fn:138] [[https://docs.oasis-open.org/office/v1.2/OpenDocument-v1.2.html][OpenDocument-v1.2 Specification]]
 
 [fn:139] See the =<table:table-template>= element of the
 OpenDocument-v1.2 specification.
@@ -22170,7 +22170,7 @@ are not evaluated when they appear in a keyword (see [[*Summary of
 In-Buffer Settings]]).
 
 [fn:144] For noweb literate programming details, see
-http://www.cs.tufts.edu/~nr/noweb/.
+https://www.cs.tufts.edu/~nr/noweb/.
 
 [fn:145] For more information, please refer to the commentary section
 in =org-tempo.el=.
diff --git a/doc/misc/semantic.texi b/doc/misc/semantic.texi
index 25ba30d13c9..b23e4c36fe3 100644
--- a/doc/misc/semantic.texi
+++ b/doc/misc/semantic.texi
@@ -82,7 +82,7 @@ hippie-expand, and several other parts of Emacs.
 
 To send bug reports, or participate in discussions about semantic,
 use the mailing list cedet-semantic@@sourceforge.net via the URL:
-@url{http://lists.sourceforge.net/lists/listinfo/cedet-semantic}
+@url{https://lists.sourceforge.net/lists/listinfo/cedet-semantic}
 
 @ifnottex
 @insertcopying
diff --git a/doc/misc/sieve.texi b/doc/misc/sieve.texi
index df03dd01442..77a393192c2 100644
--- a/doc/misc/sieve.texi
+++ b/doc/misc/sieve.texi
@@ -339,7 +339,7 @@ Indicate which script on the server should be active.
 The Emacs Sieve package implements all or parts of a small but
 hopefully growing number of RFCs and drafts documents.  This chapter
 lists the relevant ones.  They can all be fetched from
-@uref{http://quimby.gnus.org/notes/}.
+@uref{https://quimby.gnus.org/notes/}.
 
 @table @dfn
 
diff --git a/doc/misc/vhdl-mode.texi b/doc/misc/vhdl-mode.texi
index 7d451c71bd4..8abf882a291 100644
--- a/doc/misc/vhdl-mode.texi
+++ b/doc/misc/vhdl-mode.texi
@@ -892,7 +892,7 @@ list.  Send email to the maintainer @email{reto@@gnu.org} to join
 either of these lists.
 
 The official Emacs VHDL Mode Home Page can be found at
-@uref{http://www.iis.ee.ethz.ch/~zimmi/emacs/vhdl-mode.html}.
+@uref{https://www.iis.ee.ethz.ch/~zimmi/emacs/vhdl-mode.html}.
 
 @node  Sample Init File
 @chapter  Sample Init File
diff --git a/etc/DEBUG b/etc/DEBUG
index f57e6f197bf..ef9160a2090 100644
--- a/etc/DEBUG
+++ b/etc/DEBUG
@@ -1004,7 +1004,7 @@ incompatible with the --with-dumping=unexec option of 'configure'.
 
 ** Running Emacs under Valgrind
 
-Valgrind <http://valgrind.org/> is free software that can be useful
+Valgrind <https://valgrind.org/> is free software that can be useful
 when debugging low-level Emacs problems.  Unlike GCC sanitizers,
 Valgrind does not need you to compile Emacs with special debugging
 flags, so it can be helpful in investigating problems that vanish when
diff --git a/etc/NEWS.21 b/etc/NEWS.21
index 6c25a763785..a718283191b 100644
--- a/etc/NEWS.21
+++ b/etc/NEWS.21
@@ -217,7 +217,7 @@ Default is 'grow-only'.
 ** LessTif support.
 
 Emacs now runs with the LessTif toolkit (see
-<http://lesstif.sourceforge.net>).  You will need version 0.92.26, or later.
+<https://lesstif.sourceforge.net>).  You will need version 0.92.26, or later.
 
 ** LessTif/Motif file selection dialog.
 
diff --git a/etc/NEWS.22 b/etc/NEWS.22
index d7b26dda515..b4ecbe70393 100644
--- a/etc/NEWS.22
+++ b/etc/NEWS.22
@@ -3540,7 +3540,7 @@ read-only on computers that are administered by someone else.
 PBM and XBM images are supported out of the box.  Other image formats
 depend on external libraries.  All of these libraries have been ported
 to Windows, and can be found in both source and binary form at
-http://gnuwin32.sourceforge.net/.  Note that libpng also depends on
+https://gnuwin32.sourceforge.net/.  Note that libpng also depends on
 zlib, and tiff depends on the version of jpeg that it was compiled
 against.  For additional information, see nt/INSTALL.
 
diff --git a/etc/NEWS.25 b/etc/NEWS.25
index d1e43e0538e..e716f8194f5 100644
--- a/etc/NEWS.25
+++ b/etc/NEWS.25
@@ -72,7 +72,7 @@ using large fonts, at the price of a larger memory footprint.
 ** The version number of CC Mode has been changed from 5.33 to
 5.32.99, although the software itself hasn't changed.  This aims to
 reduce confusion with the standalone CC Mode 5.33 (available from
-http://cc-mode.sourceforge.net), which is a more mature version than
+https://cc-mode.sourceforge.net), which is a more mature version than
 the one included in Emacs 25.2.
 
 
diff --git a/etc/NEWS.26 b/etc/NEWS.26
index 50a711a0d14..9a6a7992088 100644
--- a/etc/NEWS.26
+++ b/etc/NEWS.26
@@ -1223,7 +1223,7 @@ specialized for editing freedesktop.org desktop entries.
 editing Less files.
 
 ** New package 'auth-source-pass' integrates 'auth-source' with the
-password manager password-store (http://passwordstore.org).
+password manager password-store (https://passwordstore.org).
 
 
 * Incompatible Lisp Changes in Emacs 26.1
diff --git a/etc/TODO b/etc/TODO
index 6253a0a93aa..cd02cf70230 100644
--- a/etc/TODO
+++ b/etc/TODO
@@ -509,7 +509,7 @@ Also for listing fonts, displaying a font as a sample, etc.
 
 ** Program Enriched mode to read and save in RTF
 Is there actually a decent single definition of RTF?  Maybe see info at
-http://latex2rtf.sourceforge.net/.
+https://latex2rtf.sourceforge.net/.
 
 This task seems to be addressed by
 https://savannah.nongnu.org/projects/emacs-rtf/, which is still in
diff --git a/etc/images/gud/README b/etc/images/gud/README
index 5edd99e2bf7..c56c3fc0ee3 100644
--- a/etc/images/gud/README
+++ b/etc/images/gud/README
@@ -13,10 +13,10 @@ License: GNU General Public License version 3 or later (see COPYING)
 
 Some icons are derived from Red Hat's Insight Debugger:
 
-<http://sourceware.org/insight/>
+<https://sourceware.org/insight/>
 "Insight is a graphical user interface to GDB, the GNU Debugger"
 
-<http://sourceware.org/insight/aboutus.php>
+<https://sourceware.org/insight/aboutus.php>
 "Insight is being released under the terms of the GNU General Public
 License (GPL)"
 
diff --git a/etc/srecode/ede-autoconf.srt b/etc/srecode/ede-autoconf.srt
index ecca7afd007..51656eb73c4 100644
--- a/etc/srecode/ede-autoconf.srt
+++ b/etc/srecode/ede-autoconf.srt
@@ -38,7 +38,7 @@ template ede-empty :project
 {{comment_prefix}} by EDE when this file is updated.
 {{comment_prefix}}
 {{comment_prefix}} EDE is the Emacs Development Environment.
-{{comment_prefix}} http://cedet.sourceforge.net/ede.shtml
+{{comment_prefix}} https://cedet.sourceforge.net/ede.shtml
 {{comment_prefix}}
 {{comment_prefix}} Process this file with autoconf to produce a configure script
 
diff --git a/etc/srecode/ede-make.srt b/etc/srecode/ede-make.srt
index cde1690f54f..c01054e0420 100644
--- a/etc/srecode/ede-make.srt
+++ b/etc/srecode/ede-make.srt
@@ -34,7 +34,7 @@ template ede-empty :file :project
 #
 # DO NOT MODIFY THIS FILE OR YOUR CHANGES MAY BE LOST.
 # EDE is the Emacs Development Environment.
-# http://cedet.sourceforge.net/ede.shtml
+# https://cedet.sourceforge.net/ede.shtml
 #
 
 ----
@@ -58,7 +58,7 @@ template ede-empty :file
 #
 # DO NOT MODIFY THIS FILE OR YOUR CHANGES MAY BE LOST.
 # EDE is the Emacs Development Environment.
-# http://cedet.sourceforge.net/ede.shtml
+# https://cedet.sourceforge.net/ede.shtml
 
 ARDUINO_DIR  = {{ARDUINO_HOME}}
 
diff --git a/lisp/ChangeLog.10 b/lisp/ChangeLog.10
index 0b97a641099..6053ffa65aa 100644
--- a/lisp/ChangeLog.10
+++ b/lisp/ChangeLog.10
@@ -9490,7 +9490,7 @@
 	toolbar/rescan.pbm, toolbar/rescan.xpm, toolbar/show.pbm,
 	toolbar/show.xpm, toolbar/widen.pbm, toolbar/widen.xpm:
 	Upgraded to mh-e version 6.1.1.  Full ChangeLog available in
-	http://prdownloads.sourceforge.net/mh-e/mh-e-6.1.tgz?download .
+	https://prdownloads.sourceforge.net/mh-e/mh-e-6.1.tgz?download .
 	There were no user-visible changes in 6.1.1 from 6.1--only the
 	section of the Makefile that installs the files into Emacs was changed.
 
diff --git a/lisp/ChangeLog.14 b/lisp/ChangeLog.14
index c84e44536d2..686746abe0b 100644
--- a/lisp/ChangeLog.14
+++ b/lisp/ChangeLog.14
@@ -155,7 +155,7 @@
 
 	* epa.el (epa-decrypt-region): Detect encoding if
 	coding-system-for-read is not specified.
-	<http://sourceforge.jp/ticket/browse.php?group_id=2267&tid=17018>
+	<https://sourceforge.jp/ticket/browse.php?group_id=2267&tid=17018>
 	(epa-verify-region): Ditto.
 
 2009-06-04  Stefan Monnier  <monnier@iro.umontreal.ca>
@@ -540,7 +540,7 @@
 
 	* epa-file.el (epa-file-decode-and-insert):
 	Use string-to-multibyte instead of set-buffer-multibyte.
-	<http://sourceforge.jp/ticket/browse.php?group_id=2267&tid=15259>
+	<https://sourceforge.jp/ticket/browse.php?group_id=2267&tid=15259>
 
 2009-04-18  Yann Hodique  <yann.hodique@gmail.com>  (tiny change)
 
diff --git a/lisp/ChangeLog.15 b/lisp/ChangeLog.15
index 53caf69e1ce..23e61ff7872 100644
--- a/lisp/ChangeLog.15
+++ b/lisp/ChangeLog.15
@@ -22762,7 +22762,7 @@
 
 	Automatically handle .xz suffix (XZ-compressed files), too.
 	* jka-cmpr-hook.el (jka-compr-compression-info-list): Add xz.
-	XZ is the successor to LZMA: <http://tukaani.org/xz/>
+	XZ is the successor to LZMA: <https://tukaani.org/xz/>
 
 2009-06-22  Dmitry Dzhus  <dima@sphinx.net.ru>
 	    Nick Roberts  <nickrob@snap.net.nz>
diff --git a/lisp/ChangeLog.17 b/lisp/ChangeLog.17
index cebafe18aa0..df731fe9ed2 100644
--- a/lisp/ChangeLog.17
+++ b/lisp/ChangeLog.17
@@ -14039,7 +14039,7 @@
 
 	* epa-file.el (epa-file-write-region): Encode the region according
 	to `buffer-file-format'.  Problem reported at:
-	<http://sourceforge.jp/ticket/browse.php?group_id=2267&tid=32917>.
+	<https://sourceforge.jp/ticket/browse.php?group_id=2267&tid=32917>.
 
 2014-01-14  Stefan Monnier  <monnier@iro.umontreal.ca>
 
diff --git a/lisp/cedet/pulse.el b/lisp/cedet/pulse.el
index 0564cf6d048..5b0df013a3c 100644
--- a/lisp/cedet/pulse.el
+++ b/lisp/cedet/pulse.el
@@ -47,7 +47,7 @@
 ;; The original pulse code was written for semantic tag highlighting.
 ;; It has been extracted, and adapted for general purpose pulsing.
 ;;
-;; Pulse is a part of CEDET.  http://cedet.sf.net
+;; Pulse is a part of CEDET.  https://cedet.sourceforge.net
 
 (require 'color)
 
diff --git a/lisp/erc/ChangeLog.1 b/lisp/erc/ChangeLog.1
index 0ea7ef09aa7..8fc97854303 100644
--- a/lisp/erc/ChangeLog.1
+++ b/lisp/erc/ChangeLog.1
@@ -3779,7 +3779,7 @@
 	doesn't appear).
 
 	* NEWS: Added the information from
-	http://emacswiki.org/cgi-bin/wiki/ErcCvsFeatures and the newer
+	https://emacswiki.org/cgi-bin/wiki/ErcCvsFeatures and the newer
 	changes which weren't yet documented on that page.
 
 2005-01-06  Hoan Ton-That  <hoan@ton-that.org>
@@ -8298,7 +8298,7 @@
 	it doesn't move point to end-of-buffer in non-ERC buffers.  Fixed
 	erc-kill-buffer-function so it doesn't run the erc-kill-server-hook hooks if the
 	server connection is closed.  Fixed bug 658552, which is described in detail at
-	http://sourceforge.net/tracker/index.php?func=detail&aid=658552&group_id=30118&atid=398125
+	https://sourceforge.net/tracker/index.php?func=detail&aid=658552&group_id=30118&atid=398125
 
 2002-12-26  Alex Schroeder  <alex@gnu.org>
 
diff --git a/lisp/gnus/mm-uu.el b/lisp/gnus/mm-uu.el
index 8646998deb9..8d314706340 100644
--- a/lisp/gnus/mm-uu.el
+++ b/lisp/gnus/mm-uu.el
@@ -194,7 +194,7 @@ This can be either \"inline\" or \"attachment\".")
      nil)
     (verbatim-marks
      ;; slrn-style verbatim marks, see
-     ;; http://slrn.sourceforge.net/docs/slrn-manual-6.html#process_verbatim_marks
+     ;; https://slrn.sourceforge.net/docs/slrn-manual-6.html#process_verbatim_marks
      "^#v\\+"
      "^#v\\-$"
      ,(lambda () (mm-uu-verbatim-marks-extract 0 0))
diff --git a/lisp/gnus/nndoc.el b/lisp/gnus/nndoc.el
index cdff7c9accf..378ada62475 100644
--- a/lisp/gnus/nndoc.el
+++ b/lisp/gnus/nndoc.el
@@ -23,7 +23,7 @@
 
 ;;; Commentary:
 
-;; For Outlook mail boxes format, see http://mbx2mbox.sourceforge.net/
+;; For Outlook mail boxes format, see https://mbx2mbox.sourceforge.net/
 
 ;;; Code:
 
diff --git a/lisp/mh-e/mh-junk.el b/lisp/mh-e/mh-junk.el
index be1b7642eb3..38a8216dc0c 100644
--- a/lisp/mh-e/mh-junk.el
+++ b/lisp/mh-e/mh-junk.el
@@ -402,7 +402,7 @@ information can be used so that you can replace multiple
 
 Bogofilter is a Bayesian spam filtering program. Get it from your
 local distribution or from the bogofilter web site at URL
-`http://bogofilter.sourceforge.net/'.
+`https://bogofilter.sourceforge.io/'.
 
 Bogofilter is taught by running:
 
@@ -487,7 +487,7 @@ See `mh-bogofilter-blocklist' for more information."
 
 SpamProbe is a Bayesian spam filtering program. Get it from your
 local distribution or from the SpamProbe web site at URL
-`http://spamprobe.sourceforge.net'.
+`https://spamprobe.sourceforge.net'.
 
 To use SpamProbe, add the following recipes to \".procmailrc\":
 
diff --git a/lisp/org/ob-matlab.el b/lisp/org/ob-matlab.el
index 4ee090e4ac7..f50da0ea434 100644
--- a/lisp/org/ob-matlab.el
+++ b/lisp/org/ob-matlab.el
@@ -32,7 +32,7 @@
 
 ;; matlab.el required for interactive emacs sessions and matlab-mode
 ;; major mode for source code editing buffer
-;; http://matlab-emacs.sourceforge.net/
+;; https://matlab-emacs.sourceforge.net/
 
 ;;; Code:
 (require 'ob)
diff --git a/lisp/org/ob-plantuml.el b/lisp/org/ob-plantuml.el
index ced00fbdda4..7a495e8e7f4 100644
--- a/lisp/org/ob-plantuml.el
+++ b/lisp/org/ob-plantuml.el
@@ -30,7 +30,7 @@
 
 ;;; Requirements:
 
-;; plantuml     | http://plantuml.sourceforge.net/
+;; plantuml     | https://plantuml.com/
 ;; plantuml.jar | `org-plantuml-jar-path' should point to the jar file (when exec mode is `jar')
 
 ;;; Code:
diff --git a/lisp/org/org-ctags.el b/lisp/org/org-ctags.el
index 6fc97ca399d..67db49e9a67 100644
--- a/lisp/org/org-ctags.el
+++ b/lisp/org/org-ctags.el
@@ -47,7 +47,7 @@
 ;;
 ;; Install org mode
 ;; Ensure org-ctags.el is somewhere in your emacs load path.
-;; Download and install Exuberant ctags -- "http://ctags.sourceforge.net/"
+;; Download and install Exuberant ctags -- "https://ctags.sourceforge.net/"
 ;; Edit your .emacs file (see next section) and load emacs.
 
 ;; To put in your init file (.emacs):
diff --git a/lisp/org/org-protocol.el b/lisp/org/org-protocol.el
index 7c4de03bc24..7a91a33b745 100644
--- a/lisp/org/org-protocol.el
+++ b/lisp/org/org-protocol.el
@@ -66,7 +66,7 @@
 ;;
 ;;
 ;; As of March 2009 Firefox users follow the steps documented on
-;; http://kb.mozillazine.org/Register_protocol, Opera setup is described here:
+;; https://kb.mozillazine.org/Register_protocol, Opera setup is described here:
 ;; http://www.opera.com/support/kb/view/535/
 ;;
 ;;
diff --git a/lisp/printing.el b/lisp/printing.el
index 0654dcda3df..767648df4d5 100644
--- a/lisp/printing.el
+++ b/lisp/printing.el
@@ -944,7 +944,7 @@
 ;;                   `https://www.gnu.org/software/ghostscript/ghostscript.html'
 ;;    gsprint        `https://www.cs.wisc.edu/~ghost/gsview/gsprint.htm'.
 ;;    enscript       `https://people.ssh.fi/mtr/genscript/'
-;;    psnup          `http://gnuwin32.sourceforge.net/packages/psutils.htm'
+;;    psnup          `https://gnuwin32.sourceforge.net/packages/psutils.htm'
 ;;    redmon         `http://www.ghostgum.com.au/software/redmon.htm'
 ;;
 ;;
@@ -1752,7 +1752,7 @@ Useful links:
   `https://linux.die.net/man/1/lp'
 
 * GNU utilities for w32 (cp.exe)
-  `http://unxutils.sourceforge.net/'"
+  `https://unxutils.sourceforge.net/'"
   :type '(repeat
 	  (list
 	   :tag "PostScript Printer"
@@ -2382,7 +2382,7 @@ Useful links:
   `http://gershwin.ens.fr/vdaniel/Doc-Locale/Outils-Gnu-Linux/PsUtils/'
 
 * psnup (PsUtils for Windows)
-  `http://gnuwin32.sourceforge.net/packages/psutils.htm'
+  `https://gnuwin32.sourceforge.net/packages/psutils.htm'
 
 * psnup documentation (GNU or Unix - or type `man psnup')
   `https://linux.die.net/man/1/psnup'
diff --git a/lisp/progmodes/antlr-mode.el b/lisp/progmodes/antlr-mode.el
index 733deebdf53..1aee1107e62 100644
--- a/lisp/progmodes/antlr-mode.el
+++ b/lisp/progmodes/antlr-mode.el
@@ -5,7 +5,7 @@
 ;; Author: Christoph Wedler <Christoph.Wedler@sap.com>
 ;; Keywords: languages, ANTLR, code generator
 ;; Version: 2.2c
-;; URL: http://antlr-mode.sourceforge.net/
+;; URL: https://antlr-mode.sourceforge.net/
 
 ;; This file is part of GNU Emacs.
 
@@ -29,7 +29,7 @@
 ;; supported options and various other things like running ANTLR from within
 ;; Emacs.
 
-;; For details, check <http://antlr-mode.sourceforge.net/> or, if you prefer
+;; For details, check <https://antlr-mode.sourceforge.net/> or, if you prefer
 ;; the manual style, follow all commands mentioned in the documentation of
 ;; `antlr-mode'.  ANTLR is a LL(k)-based recognition tool which generates
 ;; lexers, parsers and tree transformers in Java, C++ or Sather and can be
@@ -106,12 +106,12 @@
   "Major mode for ANTLR grammar files."
   :group 'languages
   :link '(emacs-commentary-link "antlr-mode.el")
-  :link '(url-link "http://antlr-mode.sourceforge.net/")
+  :link '(url-link "https://antlr-mode.sourceforge.net/")
   :prefix "antlr-")
 
 (defconst antlr-version "2.2c"
   "ANTLR major mode version number.
-Check <http://antlr-mode.sourceforge.net/> for the newest.")
+Check <https://antlr-mode.sourceforge.net/> for the newest.")
 
 
 ;;;===========================================================================
diff --git a/lisp/progmodes/cc-langs.el b/lisp/progmodes/cc-langs.el
index 650c8720ee4..b17718cfd54 100644
--- a/lisp/progmodes/cc-langs.el
+++ b/lisp/progmodes/cc-langs.el
@@ -93,7 +93,7 @@
 ;; definitions (i.e. this file and/or cc-fonts.el) if necessary.
 ;;
 ;; A small example of a derived mode is available at
-;; <http://cc-mode.sourceforge.net/derived-mode-ex.el>.  It also
+;; <https://cc-mode.sourceforge.net/derived-mode-ex.el>.  It also
 ;; contains some useful hints for derived mode developers.
 
 ;;; Using language variables:
diff --git a/lisp/progmodes/cc-mode.el b/lisp/progmodes/cc-mode.el
index 2003b09ded2..dce300f33c9 100644
--- a/lisp/progmodes/cc-mode.el
+++ b/lisp/progmodes/cc-mode.el
@@ -66,12 +66,12 @@
 ;; You can get the latest version of CC Mode, including PostScript
 ;; documentation and separate individual files from:
 ;;
-;;     http://cc-mode.sourceforge.net/
+;;     https://cc-mode.sourceforge.net/
 ;;
 ;; You can join a moderated CC Mode announcement-only mailing list by
 ;; visiting
 ;;
-;;    http://lists.sourceforge.net/mailman/listinfo/cc-mode-announce
+;;    https://lists.sourceforge.net/mailman/listinfo/cc-mode-announce
 
 ;; Externally maintained major modes which use CC-mode's engine include:
 ;; - cuda-mode
@@ -172,7 +172,7 @@
 ;; `c-font-lock-init' too to set up CC Mode's font lock support.
 ;;
 ;; See cc-langs.el for further info.  A small example of a derived mode
-;; is also available at <http://cc-mode.sourceforge.net/
+;; is also available at <https://cc-mode.sourceforge.net/
 ;; derived-mode-ex.el>.
 
 (defun c-leave-cc-mode-mode ()
diff --git a/lisp/textmodes/less-css-mode.el b/lisp/textmodes/less-css-mode.el
index 5d17b390f4d..bfb5566e896 100644
--- a/lisp/textmodes/less-css-mode.el
+++ b/lisp/textmodes/less-css-mode.el
@@ -24,7 +24,7 @@
 ;;; Commentary:
 
 ;; This mode provides syntax highlighting for Less CSS files
-;; (http://lesscss.org/), plus optional support for compilation of
+;; (https://lesscss.org/), plus optional support for compilation of
 ;; .less files to .css files at the time they are saved: use
 ;; `less-css-compile-at-save' to enable this.
 ;;
diff --git a/lisp/textmodes/sgml-mode.el b/lisp/textmodes/sgml-mode.el
index 7d691430ec6..7ce30cba8a4 100644
--- a/lisp/textmodes/sgml-mode.el
+++ b/lisp/textmodes/sgml-mode.el
@@ -268,7 +268,7 @@ Currently, only Latin-1 characters are supported.")
   ;; prefer tidy because (o)nsgmls is often built without --enable-http
   ;; which makes it next to useless
   (cond ((executable-find "tidy")
-         ;; tidy is available from http://tidy.sourceforge.net/
+         ;; tidy is available from https://tidy.sourceforge.net/
          "tidy --gnu-emacs yes -utf8 -e -q")
         ((executable-find "nsgmls")
          ;; nsgmls is a free SGML parser in the SP suite available from
@@ -276,7 +276,7 @@ Currently, only Latin-1 characters are supported.")
          "nsgmls -s")
         ((executable-find "onsgmls")
          ;; onsgmls is the community version of `nsgmls'
-         ;; hosted on http://openjade.sourceforge.net/
+         ;; hosted on https://openjade.sourceforge.net/
          "onsgmls -s")
         (t "Install (o)nsgmls, tidy, or some other SGML validator, and set `sgml-validate-command'"))
   "The command to validate an SGML document.
diff --git a/nt/INSTALL b/nt/INSTALL
index 0b8ca98c8ad..81d4c6293c5 100644
--- a/nt/INSTALL
+++ b/nt/INSTALL
@@ -214,7 +214,7 @@ build will run on Windows 9X and newer systems).
   of the 'bsdtar' program to unpack the tarballs.  'bsdtar' is
   available as part of the 'libarchive' package from here:
 
-    http://sourceforge.net/projects/ezwinports/files/
+    https://sourceforge.net/projects/ezwinports/files/
 
   The recommended place to install these packages is a single tree
   starting from some directory on a drive other than the system drive
@@ -242,16 +242,16 @@ build will run on Windows 9X and newer systems).
    . Texinfo (needed to produce the Info manuals when building from
      the repository, and for "make install")
 
-     Available from http://sourceforge.net/projects/ezwinports/files/.
+     Available from https://sourceforge.net/projects/ezwinports/files/.
 
    . pkg-config (invoked by the configure script to look for optional
      packages)
 
-     Available from http://sourceforge.net/projects/ezwinports/files/.
+     Available from https://sourceforge.net/projects/ezwinports/files/.
 
    . gzip (needed to compress files during "make install")
 
-     Available from http://gnuwin32.sourceforge.net/packages/gzip.htm.
+     Available from https://gnuwin32.sourceforge.net/packages/gzip.htm.
 
   Each package might list other packages as prerequisites on its
   download page (under "Runtime requirements"); download those as
@@ -294,7 +294,7 @@ build will run on Windows 9X and newer systems).
    . Additional package (needed only if building from the repository):
      Autoconf.  It is available from here:
 
-       http://sourceforge.net/projects/ezwinports/files/autoconf-2.65-msys-bin.zip/download
+       https://sourceforge.net/projects/ezwinports/files/autoconf-2.65-msys-bin.zip/download
 
   MSYS packages are distributed as .tar.lzma compressed archives.  To
   install the packages manually, we recommend to use the Windows port
@@ -642,7 +642,7 @@ build will run on Windows 9X and newer systems).
 
   To support XPM images (required for color tool-bar icons), you will
   need the libXpm library.  It is available from the ezwinports site,
-  http://sourceforge.net/projects/ezwinports/files/ and from
+  https://sourceforge.net/projects/ezwinports/files/ and from
   https://ftp.gnu.org/gnu/emacs/windows/.
 
   For PNG images, we recommend to use versions 1.4.x and later of
@@ -665,7 +665,7 @@ build will run on Windows 9X and newer systems).
   For GIF images, we recommend to use versions 5.0.0 or later of
   giflib, as it is much enhanced wrt previous versions.  You can find
   precompiled binaries and headers for giflib on the ezwinports site,
-  http://sourceforge.net/projects/ezwinports/files/ and on
+  https://sourceforge.net/projects/ezwinports/files/ and on
   https://ftp.gnu.org/gnu/emacs/windows/.
 
   Version 5.0.0 and later of giflib are binary incompatible with
@@ -689,7 +689,7 @@ build will run on Windows 9X and newer systems).
   Pre-built versions of librsvg and its dependencies can be found
   here:
 
-    http://sourceforge.net/projects/ezwinports/files/
+    https://sourceforge.net/projects/ezwinports/files/
 
     This site includes a minimal (as much as possible for librsvg)
     build of the library and its dependencies; it is also more
@@ -739,7 +739,7 @@ build will run on Windows 9X and newer systems).
 
   For WebP images you will need libwebp.  You can find it here:
 
-    http://sourceforge.net/projects/ezwinports/files/
+    https://sourceforge.net/projects/ezwinports/files/
 
   Note: the MS-Windows binary distribution on the Google site:
 
@@ -779,7 +779,7 @@ build will run on Windows 9X and newer systems).
   session.
 
   You can get pre-built binaries (including any required DLL and the
-  header files) at http://sourceforge.net/projects/ezwinports/files/
+  header files) at https://sourceforge.net/projects/ezwinports/files/
   and on https://ftp.gnu.org/gnu/emacs/windows/.
 
 * Optional libxml2 support
@@ -801,7 +801,7 @@ build will run on Windows 9X and newer systems).
   One place where you can get pre-built Windows binaries of libxml2
   (including any required DLL and the header files) is here:
 
-     http://sourceforge.net/projects/ezwinports/files/
+     https://sourceforge.net/projects/ezwinports/files/
      https://ftp.gnu.org/gnu/emacs/windows/
 
   For runtime support of libxml2, you will also need to install the
@@ -809,7 +809,7 @@ build will run on Windows 9X and newer systems).
   be available to the compiler when you compile with libxml2 support.
   A MinGW port of libiconv can be found on the MinGW site:
 
-   http://sourceforge.net/projects/mingw/files/MinGW/Base/libiconv/
+   https://sourceforge.net/projects/mingw/files/MinGW/Base/libiconv/
 
   You need the libiconv-X.Y.Z-N-mingw32-dev.tar.lzma tarball from that
   site.
diff --git a/nt/INSTALL.W64 b/nt/INSTALL.W64
index fd8f60bb0b5..9261c82db1b 100644
--- a/nt/INSTALL.W64
+++ b/nt/INSTALL.W64
@@ -19,7 +19,7 @@ Emacs with the full repository, or less if you're using a release tarball.
 * Set up the MinGW-w64 / MSYS2 build environment
 
 MinGW-w64 provides a complete runtime for projects built with GCC for 64-bit
-Windows -- it's located at http://mingw-w64.org/.
+Windows -- it's located at https://mingw-w64.org/.
 
 MSYS2 is a Cygwin-derived software distribution for Windows which provides
 build tools for MinGW-w64 -- see https://msys2.github.io/.
diff --git a/src/ChangeLog.13 b/src/ChangeLog.13
index abf2a9421a2..268a59219c4 100644
--- a/src/ChangeLog.13
+++ b/src/ChangeLog.13
@@ -11147,7 +11147,7 @@
 2013-11-01  Claudio Bley  <claudio.bley@googlemail.com>
 
 	* image.c (pbm_next_char): New function.
-	See http://netpbm.sourceforge.net/doc/pbm.html for the details.
+	See https://netpbm.sourceforge.net/doc/pbm.html for the details.
 	(pbm_scan_number): Use it.
 	(Qlibjpeg_version): New variable.
 	(syms_of_image): DEFSYM and initialize it.
@@ -14215,7 +14215,7 @@
 	* w32.c (PEXCEPTION_POINTERS, PEXCEPTION_RECORD, PCONTEXT): Define
 	variables of these types so that GDB would know about them, as aid
 	for debugging fatal exceptions.  (Bug#15024)  See also
-	http://sourceware.org/ml/gdb/2013-08/msg00010.html for related
+	https://sourceware.org/ml/gdb/2013-08/msg00010.html for related
 	discussions.
 
 2013-08-08  Jan Djärv  <jan.h.d@swipnet.se>
diff --git a/src/fileio.c b/src/fileio.c
index b9a57dd5800..8f96e973b25 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -6363,7 +6363,7 @@ init_fileio (void)
      For more on why fsync does not suffice even if it works properly, see:
      Roche X. Necessary step(s) to synchronize filename operations on disk.
      Austin Group Defect 672, 2013-03-19
-     http://austingroupbugs.net/view.php?id=672  */
+     https://austingroupbugs.net/view.php?id=672  */
   write_region_inhibit_fsync = noninteractive;
 }
 
diff --git a/src/sysdep.c b/src/sysdep.c
index abb385d1388..736723bdf3d 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -2432,7 +2432,7 @@ emacs_pipe (int fd[2])
 
 /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs.
    For the background behind this mess, please see Austin Group defect 529
-   <http://austingroupbugs.net/view.php?id=529>.  */
+   <https://austingroupbugs.net/view.php?id=529>.  */
 
 #ifndef POSIX_CLOSE_RESTART
 # define POSIX_CLOSE_RESTART 1
diff --git a/test/lisp/calendar/icalendar-tests.el b/test/lisp/calendar/icalendar-tests.el
index 7f8cd479146..2e9353a09b8 100644
--- a/test/lisp/calendar/icalendar-tests.el
+++ b/test/lisp/calendar/icalendar-tests.el
@@ -1310,7 +1310,7 @@ SUMMARY:and diary-anniversary
                                 "import-real-world-2003-05-29.diary-european"
                                 "import-real-world-2003-05-29.diary-american")
 
-  ;; created with http://apps.marudot.com/ical/
+  ;; created with https://apps.marudot.com/ical/
   (icalendar-tests--test-import "import-real-world-no-dst.ics"
                                 nil
                                 "import-real-world-no-dst.diary-european"
diff --git a/test/lisp/cedet/semantic-utest.el b/test/lisp/cedet/semantic-utest.el
index 24a467474b9..b577b198089 100644
--- a/test/lisp/cedet/semantic-utest.el
+++ b/test/lisp/cedet/semantic-utest.el
@@ -609,7 +609,6 @@ INSERTME is the text to be inserted after the deletion."
   (semantic-utest-generic (semantic-utest-fname "phptest.php") semantic-utest-PHP-buffer-contents semantic-utest-PHP-name-contents '("fun1") "fun2" "%^@")
   )
 
-;look at http://mfgames.com/linux/csharp-mode
 (ert-deftest semantic-utest-Csharp() ;; hmm i don't even know how to edit a scharp file. need a csharp mode implementation i suppose
   (skip-unless (featurep 'csharp-mode))
   (semantic-utest-generic (semantic-utest-fname "csharptest.cs") semantic-utest-Csharp-buffer-contents  semantic-utest-Csharp-name-contents   '("fun2") "//1" "//deleted line")
diff --git a/test/lisp/dnd-tests.el b/test/lisp/dnd-tests.el
index 67b660fc124..bdadc0f2801 100644
--- a/test/lisp/dnd-tests.el
+++ b/test/lisp/dnd-tests.el
@@ -416,7 +416,7 @@ This function only tries to handle strings."
   ;; system specific test is in x-dnd-tests.el.  When running this
   ;; interactively, keep in mind that there are only two file managers
   ;; which are known to implement XDS correctly: System G (see
-  ;; http://nps-systemg.sourceforge.net), and Emacs itself.  GTK file
+  ;; https://nps-systemg.sourceforge.net), and Emacs itself.  GTK file
   ;; managers such as Nautilus will not work, since they prefer the
   ;; `text/uri-list' selection target to `XdndDirectSave0', contrary
   ;; to the XDS specification.
diff --git a/test/lisp/net/puny-resources/IdnaTestV2.txt b/test/lisp/net/puny-resources/IdnaTestV2.txt
index ed2f32e129f..4b8d5984a7c 100644
--- a/test/lisp/net/puny-resources/IdnaTestV2.txt
+++ b/test/lisp/net/puny-resources/IdnaTestV2.txt
@@ -2,12 +2,12 @@
 # Date: 2021-08-17, 19:34:01 GMT
 # © 2021 Unicode®, Inc.
 # Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
-# For terms of use, see http://www.unicode.org/terms_of_use.html
+# For terms of use, see https://www.unicode.org/terms_of_use.html
 #
 # Unicode IDNA Compatible Preprocessing for UTS #46
 # Version: 14.0.0
 #
-# For documentation and usage, see http://www.unicode.org/reports/tr46
+# For documentation and usage, see https://www.unicode.org/reports/tr46
 #
 # Test cases for verifying UTS #46 conformance.
 #
diff --git a/test/lisp/progmodes/ruby-mode-resources/ruby.rb b/test/lisp/progmodes/ruby-mode-resources/ruby.rb
index 0c206b1e0c2..f39489071ec 100644
--- a/test/lisp/progmodes/ruby-mode-resources/ruby.rb
+++ b/test/lisp/progmodes/ruby-mode-resources/ruby.rb
@@ -177,11 +177,11 @@ qux :+,
 b = $:
 c = ??
 
-# Example from http://www.ruby-doc.org/docs/ProgrammingRuby/html/language.html
+# Example from https://ruby-doc.com/docs/ProgrammingRuby/
 d = 4 + 5 +      # no '\' needed
     6 + 7
 
-# Example from http://www.ruby-doc.org/docs/ProgrammingRuby/html/language.html
+# Example from https://www.ruby-doc.org/docs/ProgrammingRuby/
 e = 8 + 9   \
     + 10         # '\' needed
 
diff --git a/test/src/lcms-tests.el b/test/src/lcms-tests.el
index 1829a7ea1f1..7f0f660d13e 100644
--- a/test/src/lcms-tests.el
+++ b/test/src/lcms-tests.el
@@ -28,7 +28,7 @@
 ;; https://github.com/njsmith/colorspacious
 
 ;; Other references:
-;; http://www.babelcolor.com/index_htm_files/A%20review%20of%20RGB%20color%20spaces.pdf
+;; https://www.babelcolor.com/index_htm_files/A%20review%20of%20RGB%20color%20spaces.pdf
 
 ;;; Code: