Prefer HTTPS to FTP and HTTP in documentation

Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November.  Change these FTP URLs to https://ftp.gnu.org
instead.  Make similar changes for URLs to other organizations moving
away from FTP.  Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.

88 files changed, 105 insertions, 122 deletions

diff --git a/lisp/progmodes/ada-mode.el b/lisp/progmodes/ada-mode.el
index ab3ff3aa208..05d8038e87b 100644
--- a/lisp/progmodes/ada-mode.el
+++ b/lisp/progmodes/ada-mode.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;; This mode is a major mode for editing Ada code.  This is a major
diff --git a/lisp/progmodes/ada-prj.el b/lisp/progmodes/ada-prj.el
index f1b90875044..b86982a75c8 100644
--- a/lisp/progmodes/ada-prj.el
+++ b/lisp/progmodes/ada-prj.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ada-stmt.el b/lisp/progmodes/ada-stmt.el
index 2b390688c2b..c8f70b0e4b9 100644
--- a/lisp/progmodes/ada-stmt.el
+++ b/lisp/progmodes/ada-stmt.el
@@ -23,7 +23,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;; This file is now automatically loaded from ada-mode.el, and creates a submenu
diff --git a/lisp/progmodes/ada-xref.el b/lisp/progmodes/ada-xref.el
index 4e196505b6c..5f79afe01ac 100644
--- a/lisp/progmodes/ada-xref.el
+++ b/lisp/progmodes/ada-xref.el
@@ -22,7 +22,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/antlr-mode.el b/lisp/progmodes/antlr-mode.el
index 2d09e431f29..f84d94a3e68 100644
--- a/lisp/progmodes/antlr-mode.el
+++ b/lisp/progmodes/antlr-mode.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/asm-mode.el b/lisp/progmodes/asm-mode.el
index 2a1dad69877..f6e2d78f3a7 100644
--- a/lisp/progmodes/asm-mode.el
+++ b/lisp/progmodes/asm-mode.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/autoconf.el b/lisp/progmodes/autoconf.el
index 6d58faa6a66..6e591c1d657 100644
--- a/lisp/progmodes/autoconf.el
+++ b/lisp/progmodes/autoconf.el
@@ -18,7 +18,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/bat-mode.el b/lisp/progmodes/bat-mode.el
index 1dd2e3757ed..f4852fe5b6b 100644
--- a/lisp/progmodes/bat-mode.el
+++ b/lisp/progmodes/bat-mode.el
@@ -18,7 +18,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;;
diff --git a/lisp/progmodes/bug-reference.el b/lisp/progmodes/bug-reference.el
index 13c52a4571b..7e004ce6a01 100644
--- a/lisp/progmodes/bug-reference.el
+++ b/lisp/progmodes/bug-reference.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
@@ -44,7 +44,7 @@
     map)
   "Keymap used by bug reference buttons.")
 
-;; E.g., "http://gcc.gnu.org/PR%s"
+;; E.g., "https://gcc.gnu.org/PR%s"
 (defvar bug-reference-url-format nil
   "Format used to turn a bug number into a URL.
 The bug number is supplied as a string, so this should have a single %s.
diff --git a/lisp/progmodes/cc-align.el b/lisp/progmodes/cc-align.el
index dbedb592895..4b326026b80 100644
--- a/lisp/progmodes/cc-align.el
+++ b/lisp/progmodes/cc-align.el
@@ -26,7 +26,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
@@ -1231,7 +1231,7 @@ Works with: Any syntactic symbol which has an anchor position."
   (save-excursion
     (goto-char (c-langelem-pos langelem))
     (vector (current-column))))
-    
+
 
 (defun c-lineup-dont-change (_langelem)
   "Do not change the indentation of the current line.
diff --git a/lisp/progmodes/cc-awk.el b/lisp/progmodes/cc-awk.el
index 662329b5a9d..488b93eb574 100644
--- a/lisp/progmodes/cc-awk.el
+++ b/lisp/progmodes/cc-awk.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-bytecomp.el b/lisp/progmodes/cc-bytecomp.el
index f15d28e3da4..d4bce32f175 100644
--- a/lisp/progmodes/cc-bytecomp.el
+++ b/lisp/progmodes/cc-bytecomp.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-cmds.el b/lisp/progmodes/cc-cmds.el
index dec59c58090..5c8bbebf31b 100644
--- a/lisp/progmodes/cc-cmds.el
+++ b/lisp/progmodes/cc-cmds.el
@@ -26,7 +26,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-defs.el b/lisp/progmodes/cc-defs.el
index dda343d72e0..bff1c9eb65d 100644
--- a/lisp/progmodes/cc-defs.el
+++ b/lisp/progmodes/cc-defs.el
@@ -26,7 +26,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-engine.el b/lisp/progmodes/cc-engine.el
index 9ea0b2046a6..d5083ed2481 100644
--- a/lisp/progmodes/cc-engine.el
+++ b/lisp/progmodes/cc-engine.el
@@ -26,7 +26,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
@@ -11799,7 +11799,7 @@ comment at the start of cc-engine.el for more info."
 	      (cond
 	       ((c-backward-over-enum-header)
 		(setq placeholder (c-point 'boi)))
-	       ((consp (setq placeholder 
+	       ((consp (setq placeholder
 			     (c-looking-at-or-maybe-in-bracelist
 			      containing-sexp lim)))
 		(setq tmpsymbol (and (cdr placeholder) 'topmost-intro-cont))
diff --git a/lisp/progmodes/cc-fonts.el b/lisp/progmodes/cc-fonts.el
index 95246f9b166..5aefdea3305 100644
--- a/lisp/progmodes/cc-fonts.el
+++ b/lisp/progmodes/cc-fonts.el
@@ -22,7 +22,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-guess.el b/lisp/progmodes/cc-guess.el
index c8cd6fbe40b..00d8bf08175 100644
--- a/lisp/progmodes/cc-guess.el
+++ b/lisp/progmodes/cc-guess.el
@@ -22,7 +22,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;;
diff --git a/lisp/progmodes/cc-langs.el b/lisp/progmodes/cc-langs.el
index 8a4adf1f7fb..ef6b88c3727 100644
--- a/lisp/progmodes/cc-langs.el
+++ b/lisp/progmodes/cc-langs.el
@@ -26,7 +26,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-menus.el b/lisp/progmodes/cc-menus.el
index 126b419128c..6746651f18b 100644
--- a/lisp/progmodes/cc-menus.el
+++ b/lisp/progmodes/cc-menus.el
@@ -25,7 +25,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-mode.el b/lisp/progmodes/cc-mode.el
index 663a51ca72a..354dee82df9 100644
--- a/lisp/progmodes/cc-mode.el
+++ b/lisp/progmodes/cc-mode.el
@@ -25,7 +25,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-styles.el b/lisp/progmodes/cc-styles.el
index b1c94c3bc6a..1a8d90bacd3 100644
--- a/lisp/progmodes/cc-styles.el
+++ b/lisp/progmodes/cc-styles.el
@@ -26,7 +26,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cc-vars.el b/lisp/progmodes/cc-vars.el
index 2ae90ce4236..6818b5e0b76 100644
--- a/lisp/progmodes/cc-vars.el
+++ b/lisp/progmodes/cc-vars.el
@@ -26,7 +26,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cfengine.el b/lisp/progmodes/cfengine.el
index 5bc7b660633..10881cda527 100644
--- a/lisp/progmodes/cfengine.el
+++ b/lisp/progmodes/cfengine.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cmacexp.el b/lisp/progmodes/cmacexp.el
index cafd5acb37a..883515e8fc2 100644
--- a/lisp/progmodes/cmacexp.el
+++ b/lisp/progmodes/cmacexp.el
@@ -27,7 +27,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/compile.el b/lisp/progmodes/compile.el
index 8c84398792f..b3d090382d7 100644
--- a/lisp/progmodes/compile.el
+++ b/lisp/progmodes/compile.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cperl-mode.el b/lisp/progmodes/cperl-mode.el
index c69eca22413..abd77bd973d 100644
--- a/lisp/progmodes/cperl-mode.el
+++ b/lisp/progmodes/cperl-mode.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Corrections made by Ilya Zakharevich ilyaz@cpan.org
 
@@ -701,24 +701,7 @@ This way enabling/disabling of menu items is more correct."
 ;;; Short extra-docs.
 
 (defvar cperl-tips 'please-ignore-this-line
-  "Get maybe newer version of this package from
-  http://ilyaz.org/software/emacs
-Subdirectory `cperl-mode' may contain yet newer development releases and/or
-patches to related files.
-
-For best results apply to an older Emacs the patches from
-  ftp://ftp.math.ohio-state.edu/pub/users/ilya/cperl-mode/patches
-\(this upgrades syntax-parsing abilities of Emacsen v19.34 and
-v20.2 up to the level of Emacs v20.3 - a must for a good Perl
-mode.)  As of beginning of 2003, XEmacs may provide a similar ability.
-
-Get support packages choose-color.el (or font-lock-extra.el before
-19.30), imenu-go.el from the same place.  \(Look for other files there
-too... ;-).  Get a patch for imenu.el in 19.29.  Note that for 19.30 and
-later you should use choose-color.el *instead* of font-lock-extra.el
-\(and you will not get smart highlighting in C :-().
-
-Note that to enable Compile choices in the menu you need to install
+  "Note that to enable Compile choices in the menu you need to install
 mode-compile.el.
 
 If your Emacs does not default to `cperl-mode' on Perl files, and you
diff --git a/lisp/progmodes/cpp.el b/lisp/progmodes/cpp.el
index e35a76e38cd..8aaebdde5bc 100644
--- a/lisp/progmodes/cpp.el
+++ b/lisp/progmodes/cpp.el
@@ -18,7 +18,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/cwarn.el b/lisp/progmodes/cwarn.el
index 1c6905a38fe..4b28d5a82aa 100644
--- a/lisp/progmodes/cwarn.el
+++ b/lisp/progmodes/cwarn.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/dcl-mode.el b/lisp/progmodes/dcl-mode.el
index eb0850e4ec2..6681af55858 100644
--- a/lisp/progmodes/dcl-mode.el
+++ b/lisp/progmodes/dcl-mode.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ebnf-abn.el b/lisp/progmodes/ebnf-abn.el
index a3780eb70f4..f73efe45399 100644
--- a/lisp/progmodes/ebnf-abn.el
+++ b/lisp/progmodes/ebnf-abn.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ebnf-bnf.el b/lisp/progmodes/ebnf-bnf.el
index a257d391bf5..7d426f9491c 100644
--- a/lisp/progmodes/ebnf-bnf.el
+++ b/lisp/progmodes/ebnf-bnf.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ebnf-dtd.el b/lisp/progmodes/ebnf-dtd.el
index 2bea9547a1f..545e2107c2b 100644
--- a/lisp/progmodes/ebnf-dtd.el
+++ b/lisp/progmodes/ebnf-dtd.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ebnf-ebx.el b/lisp/progmodes/ebnf-ebx.el
index 84c67df63fa..048a0a198ed 100644
--- a/lisp/progmodes/ebnf-ebx.el
+++ b/lisp/progmodes/ebnf-ebx.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ebnf-iso.el b/lisp/progmodes/ebnf-iso.el
index 8847c401508..c50bcb87d98 100644
--- a/lisp/progmodes/ebnf-iso.el
+++ b/lisp/progmodes/ebnf-iso.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ebnf-otz.el b/lisp/progmodes/ebnf-otz.el
index 31dfd95e941..7d5d0d641d7 100644
--- a/lisp/progmodes/ebnf-otz.el
+++ b/lisp/progmodes/ebnf-otz.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ebnf-yac.el b/lisp/progmodes/ebnf-yac.el
index 3aa02a8e0fa..d7b20708768 100644
--- a/lisp/progmodes/ebnf-yac.el
+++ b/lisp/progmodes/ebnf-yac.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/ebnf2ps.el b/lisp/progmodes/ebnf2ps.el
index a8229df4aeb..a813d42356c 100644
--- a/lisp/progmodes/ebnf2ps.el
+++ b/lisp/progmodes/ebnf2ps.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 (defconst ebnf-version "4.4"
   "ebnf2ps.el, v 4.4 <2007/02/12 vinicius>
diff --git a/lisp/progmodes/ebrowse.el b/lisp/progmodes/ebrowse.el
index 0b5d7aa11bf..661c55dc184 100644
--- a/lisp/progmodes/ebrowse.el
+++ b/lisp/progmodes/ebrowse.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/elisp-mode.el b/lisp/progmodes/elisp-mode.el
index 0bf88579601..2f8e081a295 100644
--- a/lisp/progmodes/elisp-mode.el
+++ b/lisp/progmodes/elisp-mode.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/etags.el b/lisp/progmodes/etags.el
index 222dea1a2ac..619c2ed6877 100644
--- a/lisp/progmodes/etags.el
+++ b/lisp/progmodes/etags.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/executable.el b/lisp/progmodes/executable.el
index ebdb516de18..00c898d261c 100644
--- a/lisp/progmodes/executable.el
+++ b/lisp/progmodes/executable.el
@@ -18,7 +18,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/f90.el b/lisp/progmodes/f90.el
index 49e072c65bd..6421ba60dce 100644
--- a/lisp/progmodes/f90.el
+++ b/lisp/progmodes/f90.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/flymake-proc.el b/lisp/progmodes/flymake-proc.el
index af16e522c3a..df1a0750cfb 100644
--- a/lisp/progmodes/flymake-proc.el
+++ b/lisp/progmodes/flymake-proc.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;;
diff --git a/lisp/progmodes/flymake-ui.el b/lisp/progmodes/flymake-ui.el
index 69f0c77a71e..bf5218c41d2 100644
--- a/lisp/progmodes/flymake-ui.el
+++ b/lisp/progmodes/flymake-ui.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;;
diff --git a/lisp/progmodes/flymake.el b/lisp/progmodes/flymake.el
index 6ae2280a35d..059bce95eed 100644
--- a/lisp/progmodes/flymake.el
+++ b/lisp/progmodes/flymake.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;;
diff --git a/lisp/progmodes/fortran.el b/lisp/progmodes/fortran.el
index b15da92a5c1..b73ee2525fd 100644
--- a/lisp/progmodes/fortran.el
+++ b/lisp/progmodes/fortran.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index cc9205c0d8a..7723f700925 100644
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Credits:
 
diff --git a/lisp/progmodes/glasses.el b/lisp/progmodes/glasses.el
index f476ac0a566..699ef2eee82 100644
--- a/lisp/progmodes/glasses.el
+++ b/lisp/progmodes/glasses.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/grep.el b/lisp/progmodes/grep.el
index 466b524c79d..01bdb04714f 100644
--- a/lisp/progmodes/grep.el
+++ b/lisp/progmodes/grep.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/gud.el b/lisp/progmodes/gud.el
index e9ca7eade36..3ef1d90ab58 100644
--- a/lisp/progmodes/gud.el
+++ b/lisp/progmodes/gud.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/hideif.el b/lisp/progmodes/hideif.el
index b34ea1c4ae1..39744833255 100644
--- a/lisp/progmodes/hideif.el
+++ b/lisp/progmodes/hideif.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/hideshow.el b/lisp/progmodes/hideshow.el
index 5328526abd9..f3abf373d4e 100644
--- a/lisp/progmodes/hideshow.el
+++ b/lisp/progmodes/hideshow.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/icon.el b/lisp/progmodes/icon.el
index 92a89fef70b..a164b703f18 100644
--- a/lisp/progmodes/icon.el
+++ b/lisp/progmodes/icon.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/idlw-complete-structtag.el b/lisp/progmodes/idlw-complete-structtag.el
index d2758ccd62e..a7e49b6ea44 100644
--- a/lisp/progmodes/idlw-complete-structtag.el
+++ b/lisp/progmodes/idlw-complete-structtag.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
@@ -148,9 +148,9 @@ an up-to-date completion list."
                   (not (equal start idlwave-current-tags-completion-pos)))
 	      (idlwave-prepare-structure-tag-completion var))
           (setq idlwave-current-tags-completion-pos start)
-	  (setq idlwave-completion-help-info 
+	  (setq idlwave-completion-help-info
 		(list 'idlwave-complete-structure-tag-help))
-	  (idlwave-complete-in-buffer 'structtag 'structtag 
+	  (idlwave-complete-in-buffer 'structtag 'structtag
 				      idlwave-current-struct-tags nil
 				      "Select a structure tag" "structure tag")
 	  t) ; we did the completion: return t to skip other completions
@@ -169,7 +169,7 @@ an up-to-date completion list."
   (if (derived-mode-p 'idlwave-shell-mode)
       ;; OK, we are in the shell, do it dynamically
       (progn
-        (message "preparing shell tags") 
+        (message "preparing shell tags")
         ;; The following call puts the tags into `idlwave-current-struct-tags'
         (idlwave-complete-structure-tag-query-shell var)
         ;; initialize
@@ -191,7 +191,7 @@ an up-to-date completion list."
             ;; Find possible definitions of the structure.
             (while (idlwave-find-structure-definition var nil 'all)
               (let ((tags (idlwave-struct-tags)))
-                (when tags 
+                (when tags
                   ;; initialize
                   (setq idlwave-sint-structtags nil
                         idlwave-current-tags-buffer (current-buffer)
diff --git a/lisp/progmodes/idlw-help.el b/lisp/progmodes/idlw-help.el
index e82ed06164d..244e2b38436 100644
--- a/lisp/progmodes/idlw-help.el
+++ b/lisp/progmodes/idlw-help.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/idlw-shell.el b/lisp/progmodes/idlw-shell.el
index e7497e8e4fd..39d24d4f9d9 100644
--- a/lisp/progmodes/idlw-shell.el
+++ b/lisp/progmodes/idlw-shell.el
@@ -22,7 +22,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;;
diff --git a/lisp/progmodes/idlw-toolbar.el b/lisp/progmodes/idlw-toolbar.el
index 2fda49d91f4..c53e5e5989a 100644
--- a/lisp/progmodes/idlw-toolbar.el
+++ b/lisp/progmodes/idlw-toolbar.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/idlwave.el b/lisp/progmodes/idlwave.el
index f070000c867..9231e118907 100644
--- a/lisp/progmodes/idlwave.el
+++ b/lisp/progmodes/idlwave.el
@@ -22,7 +22,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/inf-lisp.el b/lisp/progmodes/inf-lisp.el
index 7de3a796ae1..e398c3ed64e 100644
--- a/lisp/progmodes/inf-lisp.el
+++ b/lisp/progmodes/inf-lisp.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/js.el b/lisp/progmodes/js.el
index cd315fb33ce..2bbacf7bae4 100644
--- a/lisp/progmodes/js.el
+++ b/lisp/progmodes/js.el
@@ -22,7 +22,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary
 
diff --git a/lisp/progmodes/ld-script.el b/lisp/progmodes/ld-script.el
index 7a666e95297..980ef9014c7 100644
--- a/lisp/progmodes/ld-script.el
+++ b/lisp/progmodes/ld-script.el
@@ -18,7 +18,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/m4-mode.el b/lisp/progmodes/m4-mode.el
index b48654ff41b..ebb66fa05ac 100644
--- a/lisp/progmodes/m4-mode.el
+++ b/lisp/progmodes/m4-mode.el
@@ -18,7 +18,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/make-mode.el b/lisp/progmodes/make-mode.el
index 5cda7bb219c..4c926f4de95 100644
--- a/lisp/progmodes/make-mode.el
+++ b/lisp/progmodes/make-mode.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/mantemp.el b/lisp/progmodes/mantemp.el
index 7a3c0fb0357..93119b1e8d0 100644
--- a/lisp/progmodes/mantemp.el
+++ b/lisp/progmodes/mantemp.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/meta-mode.el b/lisp/progmodes/meta-mode.el
index 33772263884..a47ae28a4af 100644
--- a/lisp/progmodes/meta-mode.el
+++ b/lisp/progmodes/meta-mode.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/mixal-mode.el b/lisp/progmodes/mixal-mode.el
index f884de1fcca..6d2d64af960 100644
--- a/lisp/progmodes/mixal-mode.el
+++ b/lisp/progmodes/mixal-mode.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 ;; Major mode for the mix asm language.
@@ -30,7 +30,7 @@
 ;; For optimal use, also use GNU MDK.  Compiling needs mixasm, running
 ;; and debugging needs mixvm and mixvm.el from GNU MDK.  You can get
 ;; GNU MDK from `https://savannah.gnu.org/projects/mdk/' and
-;; `ftp://ftp.gnu.org/pub/gnu/mdk'.
+;; `https://ftp.gnu.org/pub/gnu/mdk'.
 ;;
 ;; To use this mode, place the following in your init file:
 ;; `(load-file "/PATH-TO-FILE/mixal-mode.el")'.
diff --git a/lisp/progmodes/octave.el b/lisp/progmodes/octave.el
index ac9ba630c4e..7e91201784e 100644
--- a/lisp/progmodes/octave.el
+++ b/lisp/progmodes/octave.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
@@ -37,7 +37,7 @@
 (defgroup octave nil
   "Editing Octave code."
   :link '(custom-manual "(octave-mode)Top")
-  :link '(url-link "http://www.gnu.org/s/octave")
+  :link '(url-link "https://www.gnu.org/s/octave")
   :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces)
   :group 'languages)
 
@@ -612,7 +612,7 @@ Key bindings:
 
 (defcustom inferior-octave-prompt
   ;; For Octave >= 3.8, default is always 'octave', see
-  ;; http://hg.savannah.gnu.org/hgweb/octave/rev/708173343c50
+  ;; https://hg.savannah.gnu.org/hgweb/octave/rev/708173343c50
   "\\(?:^octave\\(?:.bin\\|.exe\\)?\\(?:-[.0-9]+\\)?\\(?::[0-9]+\\)?\\|^debug\\|^\\)>+ "
   "Regexp to match prompts for the inferior Octave process."
   :type 'regexp)
@@ -839,7 +839,7 @@ startup file, `~/.emacs-octave'."
     (inferior-octave-send-list-and-digest
      (list "more off;\n"
            (unless (equal inferior-octave-output-string ">> ")
-             ;; See http://hg.savannah.gnu.org/hgweb/octave/rev/708173343c50
+             ;; See https://hg.savannah.gnu.org/hgweb/octave/rev/708173343c50
              "PS1 ('octave> ');\n")
            (when (and inferior-octave-startup-file
                       (file-exists-p inferior-octave-startup-file))
@@ -867,7 +867,7 @@ startup file, `~/.emacs-octave'."
 
 (defun inferior-octave-completion-at-point ()
   "Return the data to complete the Octave symbol at point."
-  ;; http://debbugs.gnu.org/14300
+  ;; https://debbugs.gnu.org/14300
   (unless (string-match-p "/" (or (comint--match-partial-filename) ""))
     (let ((beg (save-excursion
                  (skip-syntax-backward "w_" (comint-line-beginning-position))
diff --git a/lisp/progmodes/opascal.el b/lisp/progmodes/opascal.el
index 6a61564b446..12353c4fafd 100644
--- a/lisp/progmodes/opascal.el
+++ b/lisp/progmodes/opascal.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/pascal.el b/lisp/progmodes/pascal.el
index a7d0624a74a..5f893b87c2e 100644
--- a/lisp/progmodes/pascal.el
+++ b/lisp/progmodes/pascal.el
@@ -18,7 +18,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/perl-mode.el b/lisp/progmodes/perl-mode.el
index 5e199fb0c33..2f9a4c3db55 100644
--- a/lisp/progmodes/perl-mode.el
+++ b/lisp/progmodes/perl-mode.el
@@ -23,7 +23,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/prog-mode.el b/lisp/progmodes/prog-mode.el
index eddaa89ef97..f727e458b2b 100644
--- a/lisp/progmodes/prog-mode.el
+++ b/lisp/progmodes/prog-mode.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/project.el b/lisp/progmodes/project.el
index ed1d564752c..9dc0da4ad5c 100644
--- a/lisp/progmodes/project.el
+++ b/lisp/progmodes/project.el
@@ -15,7 +15,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/prolog.el b/lisp/progmodes/prolog.el
index f2b487dd3bb..13cd6be9f7d 100644
--- a/lisp/progmodes/prolog.el
+++ b/lisp/progmodes/prolog.el
@@ -26,7 +26,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;; Original author: Masanobu UMEDA <umerin(at)mse(dot)kyutech(dot)ac(dot)jp>
 ;; Parts of this file was taken from a modified version of the original
diff --git a/lisp/progmodes/ps-mode.el b/lisp/progmodes/ps-mode.el
index 7e2b7fdf79f..69ea3a70f56 100644
--- a/lisp/progmodes/ps-mode.el
+++ b/lisp/progmodes/ps-mode.el
@@ -28,7 +28,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/python.el b/lisp/progmodes/python.el
index 444167f536e..f3513ced4bb 100644
--- a/lisp/progmodes/python.el
+++ b/lisp/progmodes/python.el
@@ -23,7 +23,7 @@
 ;; General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
@@ -80,7 +80,7 @@
 
 ;; Using the "console" subcommand to start IPython in server-client
 ;; mode is known to fail intermittently due a bug on IPython itself
-;; (see URL `http://debbugs.gnu.org/cgi/bugreport.cgi?bug=18052#27').
+;; (see URL `https://debbugs.gnu.org/cgi/bugreport.cgi?bug=18052#27').
 ;; There seems to be a race condition in the IPython server (A.K.A
 ;; kernel) when code is sent while it is still initializing, sometimes
 ;; causing the shell to get stalled.  With that said, if an IPython
@@ -97,7 +97,7 @@
 
 ;; Missing or delayed output used to happen due to differences between
 ;; Operating Systems' pipe buffering (e.g. CPython 3.3.4 in Windows 7.
-;; See URL `http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17304').  To
+;; See URL `https://debbugs.gnu.org/cgi/bugreport.cgi?bug=17304').  To
 ;; avoid this, the `python-shell-unbuffered' defaults to non-nil and
 ;; controls whether `python-shell-calculate-process-environment'
 ;; should set the "PYTHONUNBUFFERED" environment variable on startup:
diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index 6f431ecd302..0024957c39b 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -22,7 +22,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/scheme.el b/lisp/progmodes/scheme.el
index 0dcf9b47b84..bb75595cb4d 100644
--- a/lisp/progmodes/scheme.el
+++ b/lisp/progmodes/scheme.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/sh-script.el b/lisp/progmodes/sh-script.el
index ea2e98424ff..0bda8bc275d 100644
--- a/lisp/progmodes/sh-script.el
+++ b/lisp/progmodes/sh-script.el
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/simula.el b/lisp/progmodes/simula.el
index 505a2ea43c0..6f98d68d047 100644
--- a/lisp/progmodes/simula.el
+++ b/lisp/progmodes/simula.el
@@ -22,7 +22,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/sql.el b/lisp/progmodes/sql.el
index 48e21605a33..b8ce326f172 100644
--- a/lisp/progmodes/sql.el
+++ b/lisp/progmodes/sql.el
@@ -6,7 +6,7 @@
 ;; Maintainer: Michael Mauger <michael@mauger.com>
 ;; Version: 3.6
 ;; Keywords: comm languages processes
-;; URL: http://savannah.gnu.org/projects/emacs/
+;; URL: https://savannah.gnu.org/projects/emacs/
 
 ;; This file is part of GNU Emacs.
 
@@ -21,7 +21,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/subword.el b/lisp/progmodes/subword.el
index ede2f420735..6428b56f9dc 100644
--- a/lisp/progmodes/subword.el
+++ b/lisp/progmodes/subword.el
@@ -17,7 +17,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/tcl.el b/lisp/progmodes/tcl.el
index de0cd50911a..dbb71efdfb4 100644
--- a/lisp/progmodes/tcl.el
+++ b/lisp/progmodes/tcl.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;; BEFORE USE:
 ;;
diff --git a/lisp/progmodes/vera-mode.el b/lisp/progmodes/vera-mode.el
index 066360023d7..05d1a5f5f31 100644
--- a/lisp/progmodes/vera-mode.el
+++ b/lisp/progmodes/vera-mode.el
@@ -32,7 +32,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;; Commentary:
diff --git a/lisp/progmodes/verilog-mode.el b/lisp/progmodes/verilog-mode.el
index 6e79b1a63df..a6e3ae54559 100644
--- a/lisp/progmodes/verilog-mode.el
+++ b/lisp/progmodes/verilog-mode.el
@@ -32,7 +32,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/vhdl-mode.el b/lisp/progmodes/vhdl-mode.el
index 06ffd54d2df..3f2d7e11ec9 100644
--- a/lisp/progmodes/vhdl-mode.el
+++ b/lisp/progmodes/vhdl-mode.el
@@ -32,7 +32,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;; Commentary:
@@ -17897,7 +17897,7 @@ references:
 
 [3] European Space Agency.
     \"VHDL Modelling Guidelines\".
-    ftp://ftp.estec.esa.nl/pub/vhdl/doc/ModelGuide.{pdf,ps}
+    https://amstel.estec.esa.int/tecedm/website/docs_generic/ModelGuide.pdf
 
 Use user options `vhdl-highlight-special-words' and `vhdl-special-syntax-alist'
 to visually support naming conventions.")
diff --git a/lisp/progmodes/which-func.el b/lisp/progmodes/which-func.el
index 41513340e12..adfe7b3bf1c 100644
--- a/lisp/progmodes/which-func.el
+++ b/lisp/progmodes/which-func.el
@@ -20,7 +20,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/xref.el b/lisp/progmodes/xref.el
index 35a5c8862f4..623c9c4e07f 100644
--- a/lisp/progmodes/xref.el
+++ b/lisp/progmodes/xref.el
@@ -15,7 +15,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
diff --git a/lisp/progmodes/xscheme.el b/lisp/progmodes/xscheme.el
index bdfe30af505..4939649b999 100644
--- a/lisp/progmodes/xscheme.el
+++ b/lisp/progmodes/xscheme.el
@@ -19,7 +19,7 @@
 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 
 ;;; Commentary: