; Prefer HTTPS to HTTP in docs

* doc/emacs/android.texi (Android Software):
* doc/lispref/frames.texi (X Selections):
* doc/misc/cc-mode.texi (Custom Filling and Breaking):
* doc/misc/efaq.texi (Basic editing):
* doc/misc/gnus.texi (Propagating marks, Spam Statistics Package):
* doc/misc/org.org (External Links, Images in HTML export)
(LaTeX Export, LaTeX math snippets): Prefer HTTPS to HTTP.  Fix or
mark some broken links while we're at it.

6 files changed, 10 insertions, 9 deletions

diff --git a/doc/emacs/android.texi b/doc/emacs/android.texi
index 53c53723074..a1801d378ea 100644
--- a/doc/emacs/android.texi
+++ b/doc/emacs/android.texi
@@ -1179,7 +1179,7 @@ from improved reproductions of Unix command-line utilities to package
 repositories providing extensive collections of free GNU and Unix
 software.
 
-  @uref{http://busybox.net, Busybox} provides Unix utilities and
+  @uref{https://busybox.net, Busybox} provides Unix utilities and
 limited replicas of certain popular GNU programs such as
 @command{wget} in a single statically-linked Linux binary, which is
 capable of running under Android.
diff --git a/doc/lispref/frames.texi b/doc/lispref/frames.texi
index 53cc73a1650..2426c9c890f 100644
--- a/doc/lispref/frames.texi
+++ b/doc/lispref/frames.texi
@@ -4222,7 +4222,7 @@ selection targets that the owner supports, and @code{MULTIPLE}, used
 for internal purposes by X clients.  A selection owner may support any
 number of other targets, some of which may be standardized by the X
 Consortium's
-@url{http://x.org/releases/X11R7.6/doc/xorg-docs/specs/ICCCM/icccm.html,
+@url{https://x.org/releases/X11R7.6/doc/xorg-docs/specs/ICCCM/icccm.html,
 Inter-Client Communication Conventions Manual}, while others, such as
 @code{UTF8_STRING}, were meant to be standardized by the XFree86
 Project, but their standardization was never completed.
diff --git a/doc/misc/cc-mode.texi b/doc/misc/cc-mode.texi
index 65f178c2fa5..abfcf03d08f 100644
--- a/doc/misc/cc-mode.texi
+++ b/doc/misc/cc-mode.texi
@@ -3189,7 +3189,7 @@ margins of the texts kept intact:
 @cindex Filladapt mode
 It's also possible to use other adaptive filling packages, notably Kyle
 E. Jones' Filladapt package@footnote{It's available from
-@uref{http://www.wonderworks.com/}.  As of version 2.12, it does however
+@uref{https://elpa.gnu.org/packages/filladapt.html}.  As of version 2.12, it does however
 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
diff --git a/doc/misc/efaq.texi b/doc/misc/efaq.texi
index 5e4117d4898..4f936014ed1 100644
--- a/doc/misc/efaq.texi
+++ b/doc/misc/efaq.texi
@@ -481,7 +481,7 @@ Emacs help works best if it is invoked by a single key whose value
 should be stored in the variable @code{help-char}.
 
 Some Emacs slides and tutorials can be found at
-@uref{http://web.psung.name/emacs/}.
+@uref{https://web.psung.name/emacs/}.
 
 @node Learning how to do something
 @section How do I find out how to do something in Emacs?
diff --git a/doc/misc/gnus.texi b/doc/misc/gnus.texi
index 7bfe580f768..4d278dc3754 100644
--- a/doc/misc/gnus.texi
+++ b/doc/misc/gnus.texi
@@ -22380,6 +22380,7 @@ First of: you really need a patched mairix binary for using the marks
 propagation feature efficiently.  Otherwise, you would have to update
 the mairix database all the time.  You can get the patch at
 
+@c FIXME: This link is broken as of 2025-01-26.
 @uref{http://www.randomsample.de/mairix-maildir-patch.tar}
 
 You need the mairix v0.21 source code for this patch; everything else
@@ -26049,7 +26050,7 @@ never install such a back end.
 @cindex spam filtering, naive Bayesian
 
 Paul Graham has written an excellent essay about spam filtering using
-statistics: @uref{http://www.paulgraham.com/spam.html,A Plan for
+statistics: @uref{https://www.paulgraham.com/spam.html,A Plan for
 Spam}.  In it he describes the inherent deficiency of rule-based
 filtering as used by SpamAssassin, for example: Somebody has to write
 the rules, and everybody else has to install these rules.  You are
diff --git a/doc/misc/org.org b/doc/misc/org.org
index 98c416c5da4..363a95fa65c 100644
--- a/doc/misc/org.org
+++ b/doc/misc/org.org
@@ -3403,7 +3403,7 @@ 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=                            |
@@ -13633,7 +13633,7 @@ backend by default in-lines that image.  For example:
 ~org-html-inline-images~.
 
 On the other hand, if the description part of the Org link is itself
-another link, such as =file:= or =http:= URL pointing to an image, the
+another link, such as =file:= or =https:= URL pointing to an image, the
 HTML export backend in-lines this image and links to the main image.
 This Org syntax enables the backend to link low-resolution thumbnail
 to the high-resolution version of the image, as shown in this example:
@@ -13938,7 +13938,7 @@ terminology.  You may refer to https://tug.org/begin.html to get
 familiar with LaTeX basics.  Users with LaTeX installed may also run
 =texdoc latex= from terminal to open LaTeX introduction [fn:: The
 command will open a PDF file, which is also available for download
-from http://mirrors.ctan.org/info/latex-doc-ptr/latex-doc-ptr.pdf]
+from https://mirrors.ctan.org/info/latex-doc-ptr/latex-doc-ptr.pdf]
 
 *** LaTeX/PDF export commands
 :PROPERTIES:
@@ -15220,7 +15220,7 @@ document in one of the following ways:
   ~org-latex-to-mathml-jar-file~.
 
   If you prefer to use MathToWeb[fn:: See
-  [[http://www.mathtoweb.com/cgi-bin/mathtoweb_home.pl][MathToWeb]].]
+  [[https://mathtoweb.sourceforge.io/][MathToWeb]].]
   as your converter, you can configure the above variables as shown
   below.