; Fix quoting of non-nil in texinfo sources

25 files changed, 44 insertions, 44 deletions

diff --git a/doc/emacs/display.texi b/doc/emacs/display.texi
index b7c8825efa2..cf4f0414523 100644
--- a/doc/emacs/display.texi
+++ b/doc/emacs/display.texi
@@ -270,7 +270,7 @@ either at the top or bottom of the window depending on the scroll
 direction.  By default, @code{scroll-conservatively} is@tie{}0, which
 means to always center point in the window.
 This said, in minibuffer windows, scrolling is always conservative by
-default because @code{scroll-minibuffer-conservatively} is non-nil,
+default because @code{scroll-minibuffer-conservatively} is non-@code{nil},
 which takes precedence over @code{scroll-conservatively}.
 
 @vindex scroll-step
diff --git a/doc/emacs/haiku.texi b/doc/emacs/haiku.texi
index ac631a39a69..33c81b6f17f 100644
--- a/doc/emacs/haiku.texi
+++ b/doc/emacs/haiku.texi
@@ -108,7 +108,7 @@ You can create such a file with the @command{xmlbmessage} tool.
 @cindex crashes, Haiku
 @cindex haiku debugger
 @vindex haiku-debug-on-fatal-error
-  If the variable @code{haiku-debug-on-fatal-error} is non-nil, Emacs
+  If the variable @code{haiku-debug-on-fatal-error} is non-@code{nil}, Emacs
 will launch the system debugger when a fatal signal is received.  It
 defaults to @code{t}.  If GDB cannot be used on your system, please
 attach the report generated by the system debugger when reporting a
diff --git a/doc/emacs/macos.texi b/doc/emacs/macos.texi
index d7c432d420e..1457a8bc3a3 100644
--- a/doc/emacs/macos.texi
+++ b/doc/emacs/macos.texi
@@ -159,7 +159,7 @@ dialogue on quitting.
 @vindex ns-auto-hide-menu-bar
 @item ns-auto-hide-menu-bar
 This variable specifies whether the macOS menu bar is hidden when an
-Emacs frame is selected.  If non-nil the menu bar is not shown unless
+Emacs frame is selected.  If non-@code{nil} the menu bar is not shown unless
 the mouse pointer is moved near to the top of the screen.
 
 @vindex ns-use-native-fullscreen
@@ -178,14 +178,14 @@ These variables only apply to macOS 10.7 (Lion) and above.
 @item ns-use-mwheel-acceleration
 This variable controls whether Emacs ignores the system mousewheel
 acceleration.  When nil each `click' of the mousewheel will correspond
-exactly with one mousewheel event.  When non-nil, the default, each
+exactly with one mousewheel event.  When non-@code{nil}, the default, each
 `click' may correspond with more than one mousewheel event, depending
 on the user's input.
 
 @vindex ns-use-mwheel-momentum
 @item ns-use-mwheel-momentum
 This variable controls whether Emacs ignores the system `momentum'
-when scrolling using a trackpad.  When non-nil, the default, scrolling
+when scrolling using a trackpad.  When non-@code{nil}, the default, scrolling
 rapidly may result in the buffer continuing to scroll for a short
 while after the user has lifted their fingers off the trackpad.
 
diff --git a/doc/emacs/maintaining.texi b/doc/emacs/maintaining.texi
index 2de6b3604f8..3e03bd817ad 100644
--- a/doc/emacs/maintaining.texi
+++ b/doc/emacs/maintaining.texi
@@ -3298,7 +3298,7 @@ according to @code{bug-reference-setup-from-mail-alist},
 and @code{bug-reference-maybe-setup-from-irc} which does the setup
 according to @code{bug-reference-setup-from-irc-alist}.
 @end itemize
-A setup function should return non-nil if it could setup bug-reference
+A setup function should return non-@code{nil} if it could setup bug-reference
 mode which is the case if the last thing the function does is calling
 one of the helper functions above.
 
diff --git a/doc/emacs/misc.texi b/doc/emacs/misc.texi
index 1514e316f8c..29c0bed19c0 100644
--- a/doc/emacs/misc.texi
+++ b/doc/emacs/misc.texi
@@ -1540,7 +1540,7 @@ color is supported.  Therefore, Emacs provides an option
 @code{comint-terminfo-terminal} to let you choose a terminal with more
 advanced features, as defined in your system's terminfo database.
 Emacs will use this option as the value for @env{TERM} so long as
-@code{system-uses-terminfo} is non-nil.
+@code{system-uses-terminfo} is non-@code{nil}.
 
 Both @code{comint-terminfo-terminal} and @code{system-uses-terminfo}
 can be declared as connection-local variables to adjust these options
diff --git a/doc/lispref/backups.texi b/doc/lispref/backups.texi
index d99487368b6..f0b154e4955 100644
--- a/doc/lispref/backups.texi
+++ b/doc/lispref/backups.texi
@@ -474,7 +474,7 @@ Each transform is a list of the form @w{@code{(@var{regexp}
 @var{replacement} [@var{uniquify}])}}.  @var{regexp} is a regular
 expression to match against the file name; if it matches,
 @code{replace-match} is used to replace the matching part with
-@var{replacement}.  If the optional element @var{uniquify} is non-nil,
+@var{replacement}.  If the optional element @var{uniquify} is non-@code{nil},
 the auto-save file name is constructed by concatenating the directory
 part of the transformed file name with the buffer's file name in which
 all directory separators were changed to @samp{!} to prevent clashes.
diff --git a/doc/lispref/commands.texi b/doc/lispref/commands.texi
index ede1c4d7622..377b433cae5 100644
--- a/doc/lispref/commands.texi
+++ b/doc/lispref/commands.texi
@@ -2726,7 +2726,7 @@ coordinates @var{x} and @var{y} in a specified frame or window,
 @var{frame-or-window}, which defaults to the selected window.
 The coordinates @var{x} and @var{y} are relative to the
 text area of the selected window.
-If @var{whole} is @code{non-nil}, the @var{x} coordinate is relative
+If @var{whole} is non-@code{nil}, the @var{x} coordinate is relative
 to the entire window area including scroll bars, margins and fringes.
 @end defun
 
diff --git a/doc/lispref/compile.texi b/doc/lispref/compile.texi
index 6f8431c55ce..d1d281d7094 100644
--- a/doc/lispref/compile.texi
+++ b/doc/lispref/compile.texi
@@ -1077,7 +1077,7 @@ pristine environment, that may not be true for the subprocess.
 @end defopt
 
 @defopt native-comp-async-query-on-exit
-If this variable's value is non-nil, Emacs will query upon exiting
+If this variable's value is non-@code{nil}, Emacs will query upon exiting
 whether to exit and kill any asynchronous native-compilation
 subprocesses that are still running, thus preventing the corresponding
 @file{.eln} files from being written.  If the value is @code{nil}, the
diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi
index 15cd5518d91..c75107fb588 100644
--- a/doc/lispref/display.texi
+++ b/doc/lispref/display.texi
@@ -2587,7 +2587,7 @@ meaning the foreground color of the face.  Omitting the attribute
 @code{:color} means to use the foreground color of the face.
 @var{style} should be a symbol @code{line} or @code{wave}, meaning to
 use a straight or wavy line.  Omitting the attribute @code{:style}
-means to use a straight line.  @var{position}, if non-nil, means to
+means to use a straight line.  @var{position}, if non-@code{nil}, means to
 display the underline at the descent of the text, instead of at the
 baseline level.  If it is a number, then it specifies the amount of
 pixels above the descent to display the underline.
@@ -7347,7 +7347,7 @@ Display the next search result in @var{xwidget}.  This function will
 signal an error if a search query has not been already started in
 @var{xwidget} through @code{xwidget-webkit-search}.
 
-If @code{wrap-around} was non-nil when @code{xwidget-webkit-search}
+If @code{wrap-around} was non-@code{nil} when @code{xwidget-webkit-search}
 was called, then the search will restart from the beginning of the
 document when its end is reached.
 @end defun
@@ -7357,7 +7357,7 @@ Display the previous search result in @var{xwidget}.  This function
 signals an error if a search query has not been already started in
 @var{xwidget} through @code{xwidget-webkit-search}.
 
-If @code{wrap-around} was non-nil when @code{xwidget-webkit-search}
+If @code{wrap-around} was non-@code{nil} when @code{xwidget-webkit-search}
 was called, then the search will restart from the end of the
 document when its beginning is reached.
 @end defun
diff --git a/doc/lispref/files.texi b/doc/lispref/files.texi
index b26d4f10585..183b2786eae 100644
--- a/doc/lispref/files.texi
+++ b/doc/lispref/files.texi
@@ -3136,7 +3136,7 @@ a list of file names that match it.
 
 @var{pattern} is, by default, a ``glob''/wildcard string, e.g.,
 @samp{"/tmp/*.png"} or @samp{"/*/*/foo.png"}, but can also be a
-regular expression if the optional @var{regexp} parameter is non-nil.
+regular expression if the optional @var{regexp} parameter is non-@code{nil}.
 In any case, the matches are applied per sub-directory, so a match
 can't span a parent/sub directory.
 
diff --git a/doc/lispref/modes.texi b/doc/lispref/modes.texi
index 434538dcbf8..9527df33b82 100644
--- a/doc/lispref/modes.texi
+++ b/doc/lispref/modes.texi
@@ -198,7 +198,7 @@ on the hook.  The optional argument @var{depth} lets you indicate where the
 function should be inserted in the list: it should then be a number
 between -100 and 100 where the higher the value, the closer to the end of the
 list the function should go.  The @var{depth} defaults to 0 and for backward
-compatibility when @var{depth} is a non-nil symbol it is interpreted as a depth
+compatibility when @var{depth} is a non-@code{nil} symbol it is interpreted as a depth
 of 90.  Furthermore, when @var{depth} is strictly greater than 0 the function
 is added @emph{after} rather than before functions of the same depth.
 One should never use a depth of 100 (or -100), because one can never be
@@ -1256,7 +1256,7 @@ will be a vector for the ID at @var{pos}.  If there is no entry at
 
 @vindex tabulated-list-use-header-line
 @defun tabulated-list-header-overlay-p &optional POS
-This @code{defsubst} returns non-nil if there is a fake header at
+This @code{defsubst} returns non-@code{nil} if there is a fake header at
 @var{pos}.  A fake header is used if
 @code{tabulated-list-use-header-line} is @code{nil} to put the column
 names at the beginning of the buffer.  If omitted or @code{nil},
@@ -1269,7 +1269,7 @@ This function puts @var{tag} in the padding area of the current line.
 The padding area can be empty space at the beginning of the line, the
 width of which is governed by @code{tabulated-list-padding}.
 @var{tag} should be a string, with a length less than or equal to
-@code{tabulated-list-padding}.  If @var{advance} is non-nil, this
+@code{tabulated-list-padding}.  If @var{advance} is non-@code{nil}, this
 function advances point by one line.
 @end defun
 
@@ -1284,7 +1284,7 @@ This function changes the tabulated list entry at point, setting
 the name of the column to change.  @var{desc} is the new column
 descriptor, which is inserted via @code{tabulated-list-print-col}.
 
-If @var{change-entry-data} is non-nil, this function modifies the
+If @var{change-entry-data} is non-@code{nil}, this function modifies the
 underlying data (usually the column descriptor in the list
 @code{tabulated-list-entries}) by setting the column descriptor of the
 vector to @code{desc}.
diff --git a/doc/lispref/processes.texi b/doc/lispref/processes.texi
index db6b4c35ef7..da8df968541 100644
--- a/doc/lispref/processes.texi
+++ b/doc/lispref/processes.texi
@@ -507,7 +507,7 @@ string describing this signal.
 Since there are processes violating this rule, returning exit codes
 greater than 128 which are not bound to a signal, @code{process-file}
 returns always the exit code as natural number for remote processes.
-Setting this user option to non-nil forces @code{process-file} to
+Setting this user option to non-@code{nil} forces @code{process-file} to
 interpret such exit codes as signals, and to return a corresponding
 string.
 @end defopt
diff --git a/doc/lispref/searching.texi b/doc/lispref/searching.texi
index 04f9297ec49..743718b560f 100644
--- a/doc/lispref/searching.texi
+++ b/doc/lispref/searching.texi
@@ -1294,12 +1294,12 @@ Match any character that has whitespace syntax
 
 @item @code{lower}, @code{lower-case}
 Match anything lower-case, as determined by the current case table.
-If @code{case-fold-search} is non-nil, this also matches any
+If @code{case-fold-search} is non-@code{nil}, this also matches any
 upper-case letter.
 
 @item @code{upper}, @code{upper-case}
 Match anything upper-case, as determined by the current case table.
-If @code{case-fold-search} is non-nil, this also matches any
+If @code{case-fold-search} is non-@code{nil}, this also matches any
 lower-case letter.
 
 @item @code{graph}, @code{graphic}
diff --git a/doc/lispref/symbols.texi b/doc/lispref/symbols.texi
index 1074a8a8292..2ef4f8c2912 100644
--- a/doc/lispref/symbols.texi
+++ b/doc/lispref/symbols.texi
@@ -794,7 +794,7 @@ this case.
 @end defvar
 
 @defvar print-symbols-bare
-When bound to non-nil, the Lisp printer prints only the bare symbol of
+When bound to non-@code{nil}, the Lisp printer prints only the bare symbol of
 a symbol with position, ignoring the position.
 @end defvar
 
diff --git a/doc/lispref/text.texi b/doc/lispref/text.texi
index d1010db515d..793c22949c8 100644
--- a/doc/lispref/text.texi
+++ b/doc/lispref/text.texi
@@ -1525,7 +1525,7 @@ Some commands leave the region active after execution in such a way that
 it interferes with selective undo of that command.  To make @code{undo}
 ignore the active region when invoked immediately after such a command,
 set the property @code{undo-inhibit-region} of the command's function
-symbol to a non-nil value.  @xref{Standard Properties}.
+symbol to a non-@code{nil} value.  @xref{Standard Properties}.
 
 @node Maintaining Undo
 @section Maintaining Undo Lists
@@ -5926,7 +5926,7 @@ methods if these concepts apply to the transport.  If they do, then
 any system resources (e.g.@: processes, timers, etc.) used to listen for
 messages on the wire should be released in @code{jsonrpc-shutdown},
 i.e.@: they should only be needed while @code{jsonrpc-running-p} is
-non-nil.
+non-@code{nil}.
 
 @end enumerate
 
diff --git a/doc/lispref/windows.texi b/doc/lispref/windows.texi
index e946a408fd6..37884faec7e 100644
--- a/doc/lispref/windows.texi
+++ b/doc/lispref/windows.texi
@@ -2624,7 +2624,7 @@ default value is an empty display action, i.e., @w{@code{(nil . nil)}}.
 The value of this option is an alist mapping conditions to display
 actions.  Each condition is passed to @code{buffer-match-p}, along
 with the buffer name and the @var{action} argument passed to
-@code{display-buffer}.  If it returns a non-nil value, then
+@code{display-buffer}.  If it returns a non-@code{nil} value, then
 @code{display-buffer} uses the corresponding display action to display
 the buffer.
 @end defopt
diff --git a/doc/misc/cc-mode.texi b/doc/misc/cc-mode.texi
index ab41737794c..bade04fb95c 100644
--- a/doc/misc/cc-mode.texi
+++ b/doc/misc/cc-mode.texi
@@ -2191,7 +2191,7 @@ foo& bar
 
 @defvar c-asymmetry-fontification-flag
 @vindex asymmetry-fontification-flag @r{(c-)}
-When @code{c-asymmetry-fontification-flag} is non-nil (which it is by
+When @code{c-asymmetry-fontification-flag} is non-@code{nil} (which it is by
 default), code like the above, with white space either before or after
 the operator, but not both, is fontified as a declaration.  When the
 variable is nil, such a construct gets the default face.
diff --git a/doc/misc/cl.texi b/doc/misc/cl.texi
index a6747b1096a..e4b344f2674 100644
--- a/doc/misc/cl.texi
+++ b/doc/misc/cl.texi
@@ -4051,7 +4051,7 @@ following keywords can be used:
 
 @table @code
 @item :read-only
-A non-nil value means the slot should not be @code{setf}-able;
+A non-@code{nil} value means the slot should not be @code{setf}-able;
 the slot's value is determined when the object is created and does
 not change afterward.
 
diff --git a/doc/misc/eshell.texi b/doc/misc/eshell.texi
index 2945c05e85d..ff368c9dc41 100644
--- a/doc/misc/eshell.texi
+++ b/doc/misc/eshell.texi
@@ -800,12 +800,12 @@ command-line switch:
 
 @table @var
 @item short
-This element, if non-nil, should be a character to be used as a short
+This element, if non-@code{nil}, should be a character to be used as a short
 switch, like @code{-@var{short}}.  At least one of this element and
-@var{long} must be non-nil.
+@var{long} must be non-@code{nil}.
 
 @item long
-This element, if non-nil, should be a string to be used as a long
+This element, if non-@code{nil}, should be a string to be used as a long
 switch, like @code{--@var{long}}.
 
 @item value
diff --git a/doc/misc/flymake.texi b/doc/misc/flymake.texi
index 7406557623f..da1695099a2 100644
--- a/doc/misc/flymake.texi
+++ b/doc/misc/flymake.texi
@@ -312,7 +312,7 @@ been reported.
 Which fringe (if any) should show the warning/error bitmaps.
 
 @item flymake-wrap-around
-If non-nil, moving to errors with @code{flymake-goto-next-error} and
+If non-@code{nil}, moving to errors with @code{flymake-goto-next-error} and
 @code{flymake-goto-prev-error} wraps around buffer boundaries.
 @end vtable
 
@@ -878,7 +878,7 @@ line-idx col-idx err-text-idx)}.  @xref{Parsing the output}.
 @item flymake-proc-diagnostic-type-pred
 A function to classify a diagnostic text as particular type of error.
 Should be a function taking an error text and returning a diagnostic
-symbol (@pxref{Flymake error types}).  If non-nil is returned but
+symbol (@pxref{Flymake error types}).  If non-@code{nil} is returned but
 there is no such symbol in that table, a warning is assumed.  If nil
 is returned, an error is assumed.  Can also be a regular expression
 that should match only warnings.  This variable replaces the old
diff --git a/doc/misc/gnus.texi b/doc/misc/gnus.texi
index ec728c09adf..7bcf3342977 100644
--- a/doc/misc/gnus.texi
+++ b/doc/misc/gnus.texi
@@ -10497,7 +10497,7 @@ normally, but it'll make this command work a whole lot faster.  Of
 course, it'll make group entry somewhat slow.
 
 @vindex gnus-refer-thread-use-search
-If @code{gnus-refer-thread-use-search} is non-nil then those backends
+If @code{gnus-refer-thread-use-search} is non-@code{nil} then those backends
 that know how to find threads directly will search not just in the
 current group but all groups on the same server.
 
@@ -10515,7 +10515,7 @@ is true and the initial referral starts from a summary buffer for a
 non-virtual group this may not be possible.  In this case a new
 summary buffer is created holding a virtual group with the result of
 the thread search.)  If @code{gnus-refer-thread-limit-to-thread} is
-non-nil then the summary buffer will be limited to articles in the
+non-@code{nil} then the summary buffer will be limited to articles in the
 thread.
 
 @item M-^ (Summary)
@@ -21569,7 +21569,7 @@ Search Groups}).
 Search queries can be specified one of two ways: either using the
 syntax of the engine responsible for the group you're searching, or
 using Gnus' generalized search syntax.  Set the option
-@code{gnus-search-use-parsed-queries} to a non-nil value to used the
+@code{gnus-search-use-parsed-queries} to a non-@code{nil} value to used the
 generalized syntax.  The advantage of this syntax is that, if you have
 multiple backends indexed by different engines, you don't need to
 remember which one you're searching---it's also possible to issue the
@@ -26329,7 +26329,7 @@ size, it will reject insertion of new entries.
 @end defvar
 
 @defvar gnus-registry-register-all
-If this option is non-nil, the registry will register all messages, as
+If this option is non-@code{nil}, the registry will register all messages, as
 you see them.  This is important to making split-to-parent and
 Message-ID references work correctly, as the registry needs to know
 where all messages are, but it can slow down group opening and the
@@ -26429,7 +26429,7 @@ have to put a rule like this:
 
 in your fancy split setup.
 
-If @code{gnus-registry-register-all} is non-nil (the default), the
+If @code{gnus-registry-register-all} is non-@code{nil} (the default), the
 registry will perform splitting for all messages.  If it is nil,
 splitting will only happen for children of messages you've explicitly
 registered.
@@ -26508,7 +26508,7 @@ Store @code{value} under @code{key} for message @code{id}.
 
 @defun gnus-registry-get-id-key (id key)
 Get the data under @code{key} for message @code{id}.  If the option
-@code{gnus-registry-register-all} is non-nil, this function will also
+@code{gnus-registry-register-all} is non-@code{nil}, this function will also
 create an entry for @code{id} if one doesn't exist.
 @end defun
 
@@ -26633,7 +26633,7 @@ connections after the system resumes.  On systems compiled with D-Bus
 support (check the value of @code{(featurep 'dbusbind)}), Gnus can
 register a D-Bus signal to automatically close all server connections
 before the system goes to sleep.  To enable this, set
-@code{gnus-dbus-close-on-sleep} to a non-nil value.
+@code{gnus-dbus-close-on-sleep} to a non-@code{nil} value.
 
 For more information about D-Bus and Emacs, @pxref{Top,,, dbus, D-Bus integration in Emacs}.
 
diff --git a/doc/misc/newsticker.texi b/doc/misc/newsticker.texi
index 92dba55c016..fec571d9233 100644
--- a/doc/misc/newsticker.texi
+++ b/doc/misc/newsticker.texi
@@ -172,7 +172,7 @@ is fetched for the very first time.
 @vindex newsticker-obsolete-item-max-age
 @item newsticker-keep-obsolete-items
 Obsolete headlines are removed immediately unless
-@code{newsticker-keep-obsolete-items} is non-nil in which case they
+@code{newsticker-keep-obsolete-items} is non-@code{nil} in which case they
 are kept until @code{newsticker-obsolete-item-max-age} is reached.
 
 @vindex newsticker-automatically-mark-items-as-old
diff --git a/doc/misc/rcirc.texi b/doc/misc/rcirc.texi
index 307fe55a63f..84933a9ca72 100644
--- a/doc/misc/rcirc.texi
+++ b/doc/misc/rcirc.texi
@@ -259,7 +259,7 @@ Use @kbd{C-c C-@key{SPC}} to switch to these buffers.
 
 @vindex rcirc-track-ignore-server-buffer-flag
 If the user wishes to ignore events in the server buffer, set
-@code{rcirc-track-ignore-server-buffer-flag} to a non-nil value.
+@code{rcirc-track-ignore-server-buffer-flag} to a non-@code{nil} value.
 
 @node Reference
 @chapter Reference
@@ -693,7 +693,7 @@ buffers.
 
 @cindex rcirc-track-abbrevate-flag
 By default the channel names are abbreviated, set
-@code{rcirc-track-abbrevate-flag} to a non-nil value. This might be
+@code{rcirc-track-abbrevate-flag} to a non-@code{nil} value. This might be
 interesting if the IRC activities are not tracked in the mode line,
 but somewhere else.
 
diff --git a/doc/misc/transient.texi b/doc/misc/transient.texi
index 24c3090ef7a..a6745131d88 100644
--- a/doc/misc/transient.texi
+++ b/doc/misc/transient.texi
@@ -945,7 +945,7 @@ that multiple suffix commands can be bound to the same key, provided
 they are never active at the same time, see @ref{Predicate Slots}.
 
 Unfortunately both false-positives and false-negatives are possible.
-To deal with the former use non-nil @var{KEEP-OTHER@.}  To deal with the
+To deal with the former use non-@code{nil} @var{KEEP-OTHER@.}  To deal with the
 latter remove the conflicting binding explicitly.
 @end defun
 
diff --git a/doc/misc/url.texi b/doc/misc/url.texi
index 546639b0172..420a2b56c52 100644
--- a/doc/misc/url.texi
+++ b/doc/misc/url.texi
@@ -268,7 +268,7 @@ argument is @code{nil}, the allowed characters are those specified as
 @dfn{unreserved characters} by RFC 3986 (see the variable
 @code{url-unreserved-chars}).  Otherwise, @var{allowed-chars} should
 be either a list of allowed chars, or a vector whose Nth element is
-non-nil if character N is allowed.
+non-@code{nil} if character N is allowed.
 @end defun
 
 @defun url-unhex-string string &optional allow-newlines