Merge from origin/emacs-26

28e0261890 * lisp/progmodes/cc-defs.el (c-version): Update to 5.33.1.
ac53084f9b Improve fix for Bug#29712
ffd4771560 * doc/lispref/sequences.texi (Sequence Functions): Improve...
f274cbd185 Avoid reordering of output in 'shr-insert-document'
7890864413 Improve documentation of 'invisible-p'
a1327bbc64 Remove one more check that Vframe_list is non-nil
63b6281fdd Fix off-by-one error in 'css--hex-color'
804b37ca63 Save and restore text-pixel height and width of frames (Bu...
777fe94661 Partially revert "Mention new strictness for &optional, &r...
ad17db7964 * lisp/vc/smerge-mode.el (smerge-refine): Respect font-loc...
5a7d0095a4 * lisp/vc/smerge-mode.el (smerge-refine): Replace obsolete...
e019c35df6 FOR_EACH_FRAME no longer assumes frame-list
d64b88da2f * src/font.c (Ffont_info): Doc fix.  (Bug#29682)
92b2604a7f Modernise message.el face spec syntax
b1efbe6564 Update message.el obsolete face aliases
2494c14e76 ; * lisp/comint.el (comint-terminfo-terminal): Add a :vers...
12ad276d15 Improve documentation of TERM environment variable
8ed529f0f3 Add option to configure comint TERM
889f07c352 Better support utf-8-with-signature and utf-8-hfs in XML/HTML
a2697fac0e * lisp/menu-bar.el (menu-bar-mode): Doc fix.
ffb50eace6 ; * etc/NEWS: Fix last change.
95606af8b0 Fix Bug#29712 in tramp-tests.el
9bf66c6bee Don't run FOR_EACH_FRAME when there's no frame left (Bug#2...
c2a88ec8e8 * lisp/textmodes/tex-mode.el: Ensure uncompiled file is lo...
b178870528 Remember password change for IMAP in Gnus (Bug#29692)
a21dac18bb Add %DUMBFW to the default GnuTLS priority strings
780407cff1 Small fixes prompted by make check-declare
541a60108d Fix some custom groups
e220d6e112 Fix fontification of first declaration within a C++ lambda...
aa66da220c * src/data.c (Fadd_variable_watcher): Doc fix.
f838210b01 Fix misfontification of C++ member initialization list aft...
232c6465ce Fix doc-string of Fbuffer_list
3f9aac68d7 Don't raise an extraneous frame (bug#29696)
e7b1111155 Mention new strictness for &optional, &rest in arglists (B...
4cb8696e47 Don't misfontify "foo ()" inside C++ initialization parent...
ce31e726ad Fixes for defcustoms, prompted by cus-test-opts
aacd1e14fc * lisp/net/newst-backend.el (newsticker--raw-url-list-defa...
7e2f4d3d41 * lisp/htmlfontify.el (hfy-which-etags): Fix it.
52d2a690f6 Add missing :version tags revealed by cusver-check
f5d0360234 Escape column-zero doc parens

# Conflicts:
#	etc/NEWS

6 files changed, 39 insertions, 4 deletions

diff --git a/doc/emacs/building.texi b/doc/emacs/building.texi
index 87ac61bac3b..e108a4e7c10 100644
--- a/doc/emacs/building.texi
+++ b/doc/emacs/building.texi
@@ -303,6 +303,11 @@ And here's how to do it in csh:
 if ($?prompt) set prompt = @dots{}
 @end example
 
+@vindex TERM, environment variable, in compilation mode
+  If you want to customize the value of the @env{TERM} environment
+variable passed to the compilation subshell, customize the variable
+@code{comint-terminfo-terminal} (@pxref{Shell Options}).
+
   Emacs does not expect a compiler process to launch asynchronous
 subprocesses; if it does, and they keep running after the main
 compiler process has terminated, Emacs may kill them or their output
diff --git a/doc/emacs/misc.texi b/doc/emacs/misc.texi
index 6ad5fbafdd6..e4be004ae52 100644
--- a/doc/emacs/misc.texi
+++ b/doc/emacs/misc.texi
@@ -1396,6 +1396,16 @@ directory stack if they are not already on it
 (@code{shell-pushd-dunique}).  The values you choose should match the
 underlying shell, of course.
 
+@vindex comint-terminfo-terminal
+@vindex TERM, environment variable, in sub-shell
+Comint mode sets the @env{TERM} environment variable to a safe default
+value, but this value disables some useful features.  For example,
+color is disabled in applications that use @env{TERM} to determine if
+color is supported.  Therefore, Emacs provides an option
+@code{comint-terminfo-terminal}, which you can set to a terminal that
+is present in your system's terminfo database, in order to take
+advantage of advanced features of that terminal.
+
 @node Terminal emulator
 @subsection Emacs Terminal Emulator
 @findex term
diff --git a/doc/emacs/trouble.texi b/doc/emacs/trouble.texi
index 4a836c3224b..e98322d74e2 100644
--- a/doc/emacs/trouble.texi
+++ b/doc/emacs/trouble.texi
@@ -780,7 +780,7 @@ the dribble file.
 @item
 @findex open-termscript
 @cindex termscript file
-@cindex @env{TERM} environment variable
+@vindex TERM, environment variable, and display bugs
 For possible display bugs, the terminal type (the value of environment
 variable @env{TERM}), the complete termcap entry for the terminal from
 @file{/etc/termcap} (since that file is not identical on all machines),
diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi
index 7af8d9efb7c..50069e3d1da 100644
--- a/doc/lispref/display.texi
+++ b/doc/lispref/display.texi
@@ -929,13 +929,18 @@ major mode should use the mode's own name as an element of
 
 @defun invisible-p pos-or-prop
 If @var{pos-or-prop} is a marker or number, this function returns a
-non-@code{nil} value if the text at that position is invisible.
+non-@code{nil} value if the text at that position is currently
+invisible.
 
 If @var{pos-or-prop} is any other kind of Lisp object, that is taken
 to mean a possible value of the @code{invisible} text or overlay
 property.  In that case, this function returns a non-@code{nil} value
 if that value would cause text to become invisible, based on the
 current value of @code{buffer-invisibility-spec}.
+
+The return value of this function is @code{t} if the text would be
+completely hidden on display, or a non-@code{nil}, non-@code{t} value
+if the text would be replaced by an ellipsis.
 @end defun
 
 @vindex line-move-ignore-invisible
diff --git a/doc/lispref/sequences.texi b/doc/lispref/sequences.texi
index 4fba880803e..8d56e022d8f 100644
--- a/doc/lispref/sequences.texi
+++ b/doc/lispref/sequences.texi
@@ -425,6 +425,7 @@ useful example of @code{sort}.
 
 @cindex sequence functions in seq
 @cindex seq library
+@cindex sequences, generalized
   The @file{seq.el} library provides the following additional sequence
 manipulation macros and functions, prefixed with @code{seq-}.  To use
 them, you must first load the @file{seq} library.
@@ -859,6 +860,7 @@ it is a function of two arguments to use instead of the default @code{equal}.
 @end defun
 
 @defun seq-subseq sequence start &optional end
+@cindex sub-sequence
   This function returns a subset of @var{sequence} from @var{start}
 to @var{end}, both integers (@var{end} defaults to the last element).
 If @var{start} or @var{end} is negative, it counts from the end of
@@ -926,6 +928,8 @@ contain less elements than @var{n}.  @var{n} must be an integer.  If
 @end defun
 
 @defun seq-intersection sequence1 sequence2 &optional function
+@cindex sequences, intersection of
+@cindex intersection of sequences
   This function returns a list of the elements that appear both in
 @var{sequence1} and @var{sequence2}.  If the optional argument
 @var{function} is non-@code{nil}, it is a function of two arguments to
@@ -972,6 +976,10 @@ of @var{sequence}.  Keys are compared using @code{equal}.
 @end defun
 
 @defun seq-into sequence type
+@cindex convert sequence to another type
+@cindex list to vector
+@cindex vector to list
+@cindex string to vector
   This function converts the sequence @var{sequence} into a sequence
 of type @var{type}.  @var{type} can be one of the following symbols:
 @code{vector}, @code{string} or @code{list}.
@@ -993,6 +1001,8 @@ of type @var{type}.  @var{type} can be one of the following symbols:
 @end defun
 
 @defun seq-min sequence
+@cindex minimum value of sequence
+@cindex sequence minimum
   This function returns the smallest element of @var{sequence}.  The
 elements of @var{sequence} must be numbers or markers
 (@pxref{Markers}).
@@ -1010,6 +1020,8 @@ elements of @var{sequence} must be numbers or markers
 @end defun
 
 @defun seq-max sequence
+@cindex maximum value of sequence
+@cindex sequence maximum
   This function returns the largest element of @var{sequence}.  The
 elements of @var{sequence} must be numbers or markers.
 
@@ -1027,6 +1039,7 @@ elements of @var{sequence} must be numbers or markers.
 
 @defmac seq-doseq (var sequence) body@dots{}
 @cindex sequence iteration
+@cindex iteration over vector or string
   This macro is like @code{dolist} (@pxref{Iteration, dolist}), except
 that @var{sequence} can be a list, vector or string.  This is
 primarily useful for side-effects.
diff --git a/doc/misc/emacs-gnutls.texi b/doc/misc/emacs-gnutls.texi
index 92846a924c5..1715c83a0d2 100644
--- a/doc/misc/emacs-gnutls.texi
+++ b/doc/misc/emacs-gnutls.texi
@@ -116,9 +116,11 @@ information.
 The @code{gnutls-algorithm-priority} variable sets the GnuTLS priority
 string.  This is global, not per host name (although
 @code{gnutls-negotiate} supports a priority string per connection so
-it could be done if needed).  The priority string syntax is in the
+it could be done if needed).  For details see the
 @uref{https://www.gnu.org/software/gnutls/documentation.html, GnuTLS
-documentation}.
+documentation} and the
+@uref{https://gnutls.org/manual/html_node/Priority-Strings.html,
+GnuTLS priority string syntax and description}.
 @end defvar
 
 @defvar gnutls-trustfiles