Merge from origin/emacs-26

255ba01148 Fix handling of nil PRED2 arg for completion-table-with-pr...
949b70a7d8 ; Minor comment copyedit in window.c
20f9bf30f0 Describe Lao rendering problem
3d61657694 Fix docstring of arabic-shaper-ZWNJ-handling
db949166ec Handle single-line comments correctly (Bug#26049)
795bb233a5 * test/lisp/net/tramp-tests.el (tramp-test16-file-expand-w...
ba00ea7d0d * etc/PROBLEMS: Add URL to relevant issues for xterm+evil bug
4a6015811e ; In text.texi fix typo spotted by Štěpán Němec
93cd8415b2 Document new treatment of 'comment-auto-fill-only-comments'
ca2d94ba61 Do not load Tramp unless `tramp-mode' is non-nil
709478eaa8 Prefer `customize-set-variable' in tramp.texi
5d36f2227f Fix last change in hscroll_window_tree
72d07d1950 Ediff: add some missing documentation
18af404ef3 Support python virtualenv on w32 (Bug#24464)
efd0371c23 Improve dired deletion error handling (Bug#28797)
5d744e032f Don't replace user input when completion prefix is empty (...
ec6cf35c5f ; Describe xt-mouse problems with Evil mode
c572e1f329 Return non-nil from gnutls-available-p under GnuTLS 2.x
a2cc6d74c5 Fix Flymake help-echo functions across windows (bug#29142)
58bb3462ee Add tests for Flymake backends for Ruby and Perl
58e742b21d Add a Flymake backend for Perl
9dee764165 Add a Flymake backend for Ruby
3ad712ebc9 Add a Flymake backend for Python (bug#28808)
8db2b3a79b Allow "%" in Tramp host names
8c50842790 ; Fix typo in test/file-organization.org
00fa4449cd ; Fix typo
918a2dda07 Use hybrid malloc for FreeBSD (Bug#28308)
725ab635d9 Add html-, mhtml- and python-mode support to semantic symref
369da28702 Improve documentation of 'window-scroll-functions'
93818eed8a Fix subtle problems in tabulated-list-mode with line numbers
1f1de8e872 Make gdb-non-stop-setting default to nil on MS-Windows
680e8e119b Fix gdb-mi prompt after "attach PID" command
ff33074546 Fix doc string of 'window-configuration-change-hook'
787b75ad71 Improve documentation of window hooks
d9be8704ae Fix hscroll suspension after cursor motion
6f43d29d29 ; * CONTRIBUTE, admin/make-tarball.txt: Doc tweaks re 'ema...
a0d30d6369 Introduce a function to CC Mode which displays the current...
383abc8898 ; Fix some comment typos
b02c2714c3 Fix typos in ediff-wind.el
4f38bdec74 Examine tex-chktex--process in the correct buffer
94b490529a * nt/INSTALL.W64: Update to current mingw64 install instru...
c25113d4ac Don't resignal errors in flymake-diag-region
e950f329c0 New xref-quit-and-goto-xref command bound to TAB (bug#28814)
5d34e1b288 Allow split-window-sensibly to split threshold in further ...
2a973edeac Honor window-switching intents in xref-find-definitions (b...
78e9065e9f * lisp/emacs-lisp/generator.el (iter-do): Add a debug decl...
caa63cc96c * lisp/progmodes/flymake.el (flymake-start): Fix dead buff...
9f4f130b79 Fix buffer name comparison in async shell-command

# Conflicts:
#	etc/NEWS
#	lisp/vc/ediff-wind.el

3 files changed, 54 insertions, 42 deletions

diff --git a/doc/misc/cc-mode.texi b/doc/misc/cc-mode.texi
index c90f6d06bf6..13f5c81d949 100644
--- a/doc/misc/cc-mode.texi
+++ b/doc/misc/cc-mode.texi
@@ -1760,6 +1760,7 @@ file.  For commands that you can use to view the effect of your changes,
 see @ref{Indentation Commands} and @ref{Filling and Breaking}.
 
 For details of the @ccmode{} style system, see @ref{Styles}.
+
 @item @kbd{C-c :} (@code{c-scope-operator})
 @kindex C-c :
 @findex c-scope-operator
@@ -1768,6 +1769,18 @@ In C++, it is also sometimes desirable to insert the double-colon scope
 operator without performing the electric behavior of colon insertion.
 @kbd{C-c :} does just this.
 
+@item @kbd{C-c C-z} (@code{c-display-defun-name})
+@kindex C-c C-z
+@findex c-display-defun-name
+@findex display-defun-name (c-)
+Display the current function name, if any, in the minibuffer.
+Additionally, if a prefix argument is given, push the function name to
+the kill ring.  If there is no current function,
+@code{c-display-defun-name} does nothing.  In Emacs, you can use this
+command in the middle of an interactive search if you set the
+customizable option @code{isearch-allow-scroll} to non-@code{nil}.
+@xref{Not Exiting Isearch,,,emacs, GNU Emacs Manual}.
+
 @item @kbd{C-c C-\} (@code{c-backslash-region})
 @kindex C-c C-\
 @findex c-backslash-region
diff --git a/doc/misc/emacs-gnutls.texi b/doc/misc/emacs-gnutls.texi
index 0ad48b0b9ec..92846a924c5 100644
--- a/doc/misc/emacs-gnutls.texi
+++ b/doc/misc/emacs-gnutls.texi
@@ -94,7 +94,11 @@ There's one way to find out if GnuTLS is available, by calling
 Zaretskii) in the same directory as Emacs, you should be OK.
 
 @defun gnutls-available-p
-This function returns @code{t} if GnuTLS is available in this instance of Emacs.
+This function returns non-@code{nil} if GnuTLS is available in this
+instance of Emacs, @code{nil} otherwise.  If GnuTLS is available, the
+value is a list of GnuTLS capabilities supported by the installed
+GnuTLS library, which depends on the library version.  The meaning of
+the capabilities is documented in the doc string of this function.
 @end defun
 
 Oh, but sometimes things go wrong.  Budgets aren't balanced,
diff --git a/doc/misc/tramp.texi b/doc/misc/tramp.texi
index 47055793b73..f1d9434bf72 100644
--- a/doc/misc/tramp.texi
+++ b/doc/misc/tramp.texi
@@ -581,10 +581,7 @@ not auto loaded by Emacs.  All examples require @value{tramp} is
 installed and loaded:
 
 @lisp
-@group
-(custom-set-variables
- '(tramp-verbose 6 nil (tramp) "Enable remote command traces"))
-@end group
+(customize-set-variable 'tramp-verbose 6 "Enable remote command traces")
 @end lisp
 
 
@@ -1155,7 +1152,7 @@ option to determine the default method for remote file names that do
 not have one specified.
 
 @lisp
-(custom-set-variables '(tramp-default-method "ssh" nil (tramp)))
+(customize-set-variable 'tramp-default-method "ssh")
 @end lisp
 @end defopt
 
@@ -1242,7 +1239,7 @@ this substitution can be overridden with @option{tramp-default-user}.
 For example:
 
 @lisp
-(custom-set-variables'(tramp-default-user "root" nil (tramp)))
+(customize-set-variable 'tramp-default-user "root")
 @end lisp
 @end defopt
 
@@ -1298,9 +1295,9 @@ follows:
 @lisp
 @group
 (custom-set-variables
- '(tramp-default-method "ssh" nil (tramp))
- '(tramp-default-user "john" nil (tramp))
- '(tramp-default-host "target" nil (tramp)))
+ '(tramp-default-method "ssh")
+ '(tramp-default-user "john")
+ '(tramp-default-host "target"))
 @end group
 @end lisp
 
@@ -1858,21 +1855,20 @@ example below:
 
 @lisp
 @group
-(custom-set-variables
- '(tramp-password-prompt-regexp
-   (concat
-    "^.*"
-    (regexp-opt
-     '("passphrase" "Passphrase"
-       ;; English
-       "password" "Password"
-       ;; Deutsch
-       "passwort" "Passwort"
-       ;; Français
-       "mot de passe" "Mot de passe")
-     t)
-    ".*:\0? *")
-   nil (tramp)))
+(customize-set-variable
+ 'tramp-password-prompt-regexp
+  (concat
+   "^.*"
+   (regexp-opt
+    '("passphrase" "Passphrase"
+      ;; English
+      "password" "Password"
+      ;; Deutsch
+      "passwort" "Passwort"
+      ;; Français
+      "mot de passe" "Mot de passe")
+    t)
+   ".*:\0? *"))
 @end group
 @end lisp
 
@@ -2175,8 +2171,8 @@ Example:
 @group
 (add-to-list 'backup-directory-alist
              (cons "." "~/.emacs.d/backups/"))
-(custom-set-variables
- '(tramp-backup-directory-alist backup-directory-alist 6 nil (tramp)))
+(customize-set-variable
+ 'tramp-backup-directory-alist backup-directory-alist)
 @end group
 @end lisp
 
@@ -2549,7 +2545,7 @@ For ad-hoc definitions to be saved automatically in
 @option{tramp-save-ad-hoc-proxies} to non-@code{nil}.
 
 @lisp
-(custom-set-variables '(tramp-save-ad-hoc-proxies t nil (tramp)))
+(customize-set-variable 'tramp-save-ad-hoc-proxies t)
 @end lisp
 @end defopt
 
@@ -3189,10 +3185,11 @@ which allows you to set the @code{ControlPath} provided the variable
 
 @lisp
 @group
-(setq tramp-ssh-controlmaster-options
-      (concat
-        "-o ControlPath=/tmp/ssh-ControlPath-%%r@@%%h:%%p "
-        "-o ControlMaster=auto -o ControlPersist=yes"))
+(customize-set-variable
+ 'tramp-ssh-controlmaster-options
+ (concat
+   "-o ControlPath=/tmp/ssh-ControlPath-%%r@@%%h:%%p "
+   "-o ControlMaster=auto -o ControlPersist=yes"))
 @end group
 @end lisp
 
@@ -3205,10 +3202,7 @@ behavior, then any changes to @command{ssh} can be suppressed with
 this @code{nil} setting:
 
 @lisp
-@group
-(custom-set-variables
- '(tramp-use-ssh-controlmaster-options nil nil (tramp)))
-@end group
+(customize-set-variable 'tramp-use-ssh-controlmaster-options nil)
 @end lisp
 
 
@@ -3364,8 +3358,8 @@ You can define default methods and user names for hosts,
 @lisp
 @group
 (custom-set-variables
- '(tramp-default-method "ssh" nil (tramp))
- '(tramp-default-user "news" nil (tramp)))
+ '(tramp-default-method "ssh")
+ '(tramp-default-user "news"))
 @end group
 @end lisp
 
@@ -3659,7 +3653,7 @@ disable such features.
 Disable @value{tramp} file name completion:
 
 @lisp
-(custom-set-variables '(ido-enable-tramp-completion nil))
+(customize-set-variable 'ido-enable-tramp-completion nil)
 @end lisp
 
 @item
@@ -3682,15 +3676,16 @@ To keep Ange FTP as default the remote files access package, set this
 in @file{.emacs}:
 
 @lisp
-(custom-set-variables '(tramp-default-method "ftp" nil (tramp)))
+(customize-set-variable 'tramp-default-method "ftp")
 @end lisp
 
 @item
 To disable both @value{tramp} (and Ange FTP), set @code{tramp-mode} to
-@code{nil} in @file{.emacs}.
+@code{nil} in @file{.emacs}.  @strong{Note}, that we don't use
+@code{customize-set-variable}, in order to avoid loading @value{tramp}.
 
 @lisp
-(custom-set-variables '(tramp-mode nil nil (tramp)))
+(setq tramp-mode nil)
 @end lisp
 
 @item