Merge from origin/emacs-26

9d7e08d (origin/emacs-26) Avoid false positives and false negatives o...
75b589c Fix markup related to quoting in Info
fd6ff29 Merge branch 'emacs-26' of git.savannah.gnu.org:/srv/git/emac...
cd2204f Add a package: line to c-submit-bug-report.
a992dca ; Remove empty NEWS sections
ea67270 ; Add NEWS sections for 26.3
45b0946 ; Bump Emacs version to 26.2.50
aae8cc3 * admin/admin.el (set-version): Add NEWS headers for a .50 ve...

doc/emacs/mark.texi

@@ -76,7 +76,7 @@ Set point and the mark around the text you drag across.
 @item mouse-3
 Set the mark at point, then move point to where you click
 (@code{mouse-save-then-kill}).
-@item @samp{Shifted cursor motion keys}
+@item @r{Shifted cursor motion keys}
 Set the mark at point if the mark is inactive, then move point.
 @xref{Shift Selection}.
 @end table

doc/misc/calc.texi

@@ -14661,7 +14661,7 @@ conventions of Yacas, a free computer algebra system.  While the
 operators and functions in Yacas are similar to those of Calc, the names
 of built-in functions in Yacas are capitalized.  The Calc formula
 @samp{sin(2 x)}, for example, is entered and displayed @samp{Sin(2 x)}
-in Yacas mode,  and `@samp{arcsin(x^2)} is @samp{ArcSin(x^2)} in Yacas
+in Yacas mode,  and @samp{arcsin(x^2)} is @samp{ArcSin(x^2)} in Yacas
 mode.  Complex numbers are written  are written @samp{3 + 4 I}.
 The standard special constants are written @code{Pi}, @code{E},
 @code{I}, @code{GoldenRatio} and @code{Gamma}.  @code{Infinity}

doc/misc/mh-e.texi

@@ -6287,24 +6287,24 @@ Emacs navigational keys (like the arrow keys, or @kbd{C-n}) to move
 the cursor over the desired folder and then use the shortcuts for the
 menu items listed in the table below.
 
-@table @samp
+@table @asis
 @findex mh-speed-view
-@item Visit Folder (@key{RET})
+@item @samp{Visit Folder} (@key{RET})
 Visits the selected folder just as if you had used @kbd{F v}
 (@code{mh-speed-view}).
 @c -------------------------
 @findex mh-speed-expand-folder
-@item Expand Nested Folders (@kbd{+})
+@item @samp{Expand Nested Folders} (@kbd{+})
 Expands the selected folder in the speedbar, exposing the children
 folders inside it (@code{mh-speed-expand-folder}).
 @c -------------------------
 @findex mh-speed-contract-folder
-@item Contract Nested Folders (@kbd{-})
+@item @samp{Contract Nested Folders} (@kbd{-})
 Contracts or collapses the selected folder in the speedbar, hiding the
 children folders inside it (@code{mh-speed-contract-folder}).
 @c -------------------------
 @findex mh-speed-refresh
-@item Refresh Speedbar (@kbd{r})
+@item @samp{Refresh Speedbar} (@kbd{r})
 Regenerates the list of folders in the speedbar. Run this command if
 you've added or deleted a folder, or want to update the unseen message
 count before the next automatic update (@code{mh-speed-refresh}).

doc/misc/sc.texi

@@ -249,10 +249,10 @@ And that's what I think too.
 @end menu
 
 Note that multiple inclusions of the original messages result in a
-nesting of the @samp{@code{>}} characters.  This can sometimes be quite
+nesting of the @samp{>} characters.  This can sometimes be quite
 confusing when many levels of citations are included since it may be
 difficult or impossible to figure out who actually participated in the
-thread, and multiple nesting of @samp{@code{>}} characters can sometimes
+thread, and multiple nesting of @samp{>} characters can sometimes
 make the message very difficult for the eye to scan.
 
 @cindex non-nested citations

lisp/info.el

@@ -4268,8 +4268,9 @@ With a zero prefix arg, put the name inside a function call to `info'."
 ;; We deliberately fontify only ‘..’ quoting, and not `..', because
 ;; the former can be done much more reliably, i.e. without risking
 ;; false positives.
+;; FIXME: It doesn't handle nested quotes.
 (defvar Info-mode-font-lock-keywords
-  '(("‘\\([^’]*\\)’" (1 'Info-quoted))))
+  '(("‘\\([‘’]\\|[^‘’]*\\)’" (1 'Info-quoted))))
 
 ;; Autoload cookie needed by desktop.el
 ;;;###autoload