Tribblix: manual page: nanorc.5

NANORC(5) File Formats and Configurations NANORC(5)

NAME

nanorc - GNU nano's configuration file

DESCRIPTION

The nanorc files contain the default settings for nano, a small and
friendly editor. During startup, if --rcfile is not given, nano will
read two files: first the system-wide settings, from /etc/nanorc (the
exact path might be different on your system), and then the user-
specific settings, either from ~/.nanorc or from
$XDG_CONFIG_HOME/nano/nanorc or from ~/.config/nano/nanorc, whichever
is encountered first. If --rcfile is given, nano will read just the
specified settings file.

OPTIONS

The configuration file accepts a series of set and unset commands,
which can be used to configure nano on startup without using command-
line options. Additionally, there are some commands to define syntax
highlighting and to rebind keys -- see the two separate sections on
those. nano reads one command per line. All commands and keywords
should be written in lowercase.

Options in nanorc files take precedence over nano's defaults, and
command-line options override nanorc settings. Also, options that do
not take an argument are unset by default. So using the unset
command is only needed when wanting to override a setting of the
system's nanorc file in your own nanorc. Options that take an
argument cannot be unset.

Quotes inside the characters parameters below should not be escaped.
The last double quote on the line will be seen as the closing quote.

The supported commands and arguments are:

set afterends
Make Ctrl+Right and Ctrl+Delete stop at word ends instead of
beginnings.

set allow_insecure_backup
When backing up files, allow the backup to succeed even if its
permissions can't be (re)set due to special OS considerations.
You should NOT enable this option unless you are sure you need it.

set atblanks
When soft line wrapping is enabled, make it wrap lines at blank
characters (tabs and spaces) instead of always at the edge of the
screen.

set autoindent
Automatically indent a newly created line to the same number of
tabs and/or spaces as the previous line (or as the next line if
the previous line is the beginning of a paragraph).

set backup
When saving a file, create a backup file by adding a tilde (~) to
the file's name.

set backupdir directory
Make and keep not just one backup file, but make and keep a
uniquely numbered one every time a file is saved -- when backups
are enabled with set backup or --backup or -B. The uniquely
numbered files are stored in the specified directory.

set boldtext
Use bold instead of reverse video for the title bar, status bar,
key combos, function tags, line numbers, and selected text. This
can be overridden by setting the options titlecolor, statuscolor,
keycolor, functioncolor, numbercolor, and selectedcolor.

set bookstyle
When justifying, treat any line that starts with whitespace as the
beginning of a paragraph (unless auto-indenting is on).

set brackets "characters"
Set the characters treated as closing brackets when justifying
paragraphs. This may not include blank characters. Only closing
punctuation (see set punct), optionally followed by the specified
closing brackets, can end sentences. The default value is
""')>]}".

set breaklonglines
Automatically hard-wrap the current line when it becomes overlong.

set casesensitive
Do case-sensitive searches by default.

set constantshow
Constantly display the cursor position in the status bar. This
overrides the option quickblank.

set cutfromcursor
Use cut-from-cursor-to-end-of-line by default, instead of cutting
the whole line.

set emptyline
Do not use the line below the title bar, leaving it entirely
blank.

set errorcolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for the status bar when an error
message is displayed. The default value is bold,white,red. See
set titlecolor for valid color names.

set fill number
Set the target width for justifying and automatic hard-wrapping at
this number of columns. If the value is 0 or less, wrapping will
occur at the width of the screen minus number columns, allowing
the wrap point to vary along with the width of the screen if the
screen is resized. The default value is -8.

set functioncolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for the concise function descriptions
in the two help lines at the bottom of the screen. See set
titlecolor for more details.

set guidestripe number
Draw a vertical stripe at the given column, to help judge the
width of the text. (The color of the stripe can be changed with
set stripecolor.)

set historylog
Save the last hundred search strings and replacement strings and
executed commands, so they can be easily reused in later sessions.

set indicator
Display a "scrollbar" on the righthand side of the edit window.
It shows the position of the viewport in the buffer and how much
of the buffer is covered by the viewport.

set jumpyscrolling
Scroll the buffer contents per half-screen instead of per line.

set keycolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for the shortcut key combos in the two
help lines at the bottom of the screen. See set titlecolor for
more details.

set linenumbers
Display line numbers to the left of the text area. (Any line with
an anchor additionally gets a mark in the margin.)

set locking
Enable vim-style lock-files for when editing files.

set magic
When neither the file's name nor its first line give a clue, try
using libmagic to determine the applicable syntax. (Calling
libmagic can be relatively time consuming. It is therefore not
done by default.)

set matchbrackets "characters"
Specify the opening and closing brackets that can be found by
bracket searches. This may not include blank characters. The
opening set must come before the closing set, and the two sets
must be in the same order. The default value is "(<[{)>]}".

set minibar
Suppress the title bar and instead show information about the
current buffer at the bottom of the screen, in the space for the
status bar. In this "minibar" the filename is shown on the left,
followed by an asterisk if the buffer has been modified. On the
right are displayed the current line and column number, the code
of the character under the cursor (in Unicode format: U+xxxx), the
same flags as are shown by set stateflags, and a percentage that
expresses how far the cursor is into the file (linewise). When a
file is loaded or saved, and also when switching between buffers,
the number of lines in the buffer is displayed after the filename.
This number is cleared upon the next keystroke, or replaced with
an [i/n] counter when multiple buffers are open. The line plus
column numbers and the character code are displayed only when set
constantshow is used, and can be toggled on and off with M-C. The
state flags are displayed only when set stateflags is used.

set minicolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for the minibar. (When this option is
not specified, the colors of the title bar are used.) See set
titlecolor for more details.

set mouse
Enable mouse support, if available for your system. When enabled,
mouse clicks can be used to place the cursor, set the mark (with a
double click), and execute shortcuts. The mouse will work in the
X Window System, and on the console when gpm is running. Text can
still be selected through dragging by holding down the Shift key.

set multibuffer
When reading in a file with ^R, insert it into a new buffer by
default.

set noconvert
Don't convert files from DOS/Mac format.

set nohelp
Don't display the two help lines at the bottom of the screen.

set nonewlines
Don't automatically add a newline when a text does not end with
one. (This can cause you to save non-POSIX text files.)

set nowrap
Deprecated option since it has become the default setting. When
needed, use unset breaklonglines instead.

set numbercolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for line numbers. See set titlecolor
for more details.

set operatingdir directory
nano will only read and write files inside directory and its
subdirectories. Also, the current directory is changed to here,
so files are inserted from this directory. By default, the
operating directory feature is turned off.

set positionlog
Save the cursor position of files between editing sessions. The
cursor position is remembered for the 200 most-recently edited
files.

set preserve
Preserve the XON and XOFF keys (^Q and ^S).

set promptcolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for the prompt bar. (When this option
is not specified, the colors of the title bar are used.) See set
titlecolor for more details.

set punct "characters"
Set the characters treated as closing punctuation when justifying
paragraphs. This may not include blank characters. Only the
specfified closing punctuation, optionally followed by closing
brackets (see brackets), can end sentences. The default value is
"!.?".

set quickblank
Make status-bar messages disappear after 1 keystroke instead of
after 20. Note that option constantshow overrides this. When
option minibar or zero is in effect, quickblank makes a message
disappear after 0.8 seconds instead of after the default 1.5
seconds.

set quotestr "regex"
Set the regular expression for matching the quoting part of a
line. The default value is "^([ \t]*([!#%:;>|}]|//))+". (Note
that \t stands for an actual Tab character.) This makes it
possible to rejustify blocks of quoted text when composing email,
and to rewrap blocks of line comments when writing source code.

set rawsequences
Interpret escape sequences directly, instead of asking ncurses to
translate them. (If you need this option to get some keys to work
properly, it means that the terminfo terminal description that is
used does not fully match the actual behavior of your terminal.
This can happen when you ssh into a BSD machine, for example.)
Using this option disables nano's mouse support.

set rebinddelete
Interpret the Delete and Backspace keys differently so that both
Backspace and Delete work properly. You should only use this
option when on your system either Backspace acts like Delete or
Delete acts like Backspace.

set regexp
Do regular-expression searches by default. Regular expressions in
nano are of the extended type (ERE).

set saveonexit
Save a changed buffer automatically on exit (^X); don't prompt.

set scrollercolor fgcolor,bgcolor
Use this color combination for the indicator alias "scrollbar".
(On terminal emulators that link to a libvte older than version
0.55, using a background color here does not work correctly.) See
set titlecolor for more details.

set selectedcolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for selected text. See set titlecolor
for more details.

set showcursor
Put the cursor on the highlighted item in the file browser, and
show the cursor in the help viewer, to aid braille users and
people with poor vision.

set smarthome
Make the Home key smarter. When Home is pressed anywhere but at
the very beginning of non-whitespace characters on a line, the
cursor will jump to that beginning (either forwards or backwards).
If the cursor is already at that position, it will jump to the
true beginning of the line.

set softwrap
Display lines that exceed the screen's width over multiple screen
lines. (You can make this soft-wrapping occur at whitespace
instead of rudely at the screen's edge, by using also set
atblanks.)

set speller "program [argument ...]"
Use the given program to do spell checking and correcting, instead
of using the built-in corrector that calls hunspell(1) or
spell(1).

set spotlightcolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for highlighting a search match. The
default value is black,lightyellow. See set titlecolor for valid
color names.

set stateflags
Use the top-right corner of the screen for showing some state
flags: I when auto-indenting, M when the mark is on, L when hard-
wrapping (breaking long lines), R when recording a macro, and S
when soft-wrapping. When the buffer is modified, a star (*) is
shown after the filename in the center of the title bar.

set statuscolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for the status bar. See set titlecolor
for more details.

set stripecolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for the vertical guiding stripe. See
set titlecolor for more details.

set tabsize number
Use a tab size of number columns. The value of number must be
greater than 0. The default value is 8.

set tabstospaces
Convert each typed tab to spaces -- to the number of spaces that a
tab at that position would take up.

set titlecolor [bold,][italic,]fgcolor,bgcolor
Use this color combination for the title bar. Valid names for the
foreground and background colors are: red, green, blue, magenta,
yellow, cyan, white, and black. Each of these eight names may be
prefixed with the word light to get a brighter version of that
color. The word grey or gray may be used as a synonym for
lightblack. On terminal emulators that can do at least 256
colors, other valid (but unprefixable) color names are: pink,
purple, mauve, lagoon, mint, lime, peach, orange, latte, rosy,
beet, plum, sea, sky, slate, teal, sage, brown, ocher, sand,
tawny, brick, crimson, and normal -- where normal means the
default foreground or background color. On such emulators, the
color may also be specified as a three-digit hexadecimal number
prefixed with #, with the digits representing the amounts of red,
green, and blue, respectively. This tells nano to select from the
available palette the color that approximates the given values.

Either "fgcolor" or ",bgcolor" may be left out, and the pair may
be preceded by bold and/or italic (separated by commas) to get a
bold and/or slanting typeface, if your terminal can do those.

set trimblanks
Remove trailing whitespace from wrapped lines when automatic hard-
wrapping occurs or when text is justified.

set unix
Save a file by default in Unix format. This overrides nano's
default behavior of saving a file in the format that it had.
(This option has no effect when you also use set noconvert.)

set whitespace "characters"
Set the two characters used to indicate the presence of tabs and
spaces. They must be single-column characters. The default pair
for a UTF-8 locale is ">>.", and for other locales ">.".

set wordbounds
Detect word boundaries differently by treating punctuation
characters as parts of words.

set wordchars "characters"
Specify which other characters (besides the normal alphanumeric
ones) should be considered as parts of words. When using this
option, you probably want to unset wordbounds.

set zap
Let an unmodified Backspace or Delete erase the marked region
(instead of a single character, and without affecting the
cutbuffer).

set zero
Hide all elements of the interface (title bar, status bar, and
help lines) and use all rows of the terminal for showing the
contents of the buffer. The status bar appears only when there is
a significant message, and disappears after 1.5 seconds or upon
the next keystroke. With M-Z the title bar plus status bar can be
toggled. With M-X the help lines.

NOTES

Option set suspendable has been removed. Suspension is enabled by
default, reachable via ^T^Z. (If you want a plain ^Z to suspend
nano, add bind ^Z suspend main to your nanorc.)

SYNTAX HIGHLIGHTING

Coloring the different syntactic elements of a file is done via
regular expressions (see the color command below). This is
inherently imperfect, because regular expressions are not powerful
enough to fully parse a file. Nevertheless, regular expressions can
do a lot and are easy to make, so they are a good fit for a small
editor like nano.

All regular expressions in nano are POSIX extended regular
expressions. This means that ., ?, *, +, ^, $, and several other
characters are special. The period . matches any single character, ?
means the preceding item is optional, * means the preceding item may
be matched zero or more times, + means the preceding item must be
matched one or more times, ^ matches the beginning of a line, and $
the end, \< matches the start of a word, and \> the end, and \s
matches a blank. It also means that lookahead and lookbehind are not
possible. A complete explanation can be found in the manual page of
GNU grep: man grep.

For each kind of file a separate syntax can be defined via the
following commands:

syntax name ["fileregex" ...]
Start the definition of a syntax with this name. All
subsequent color and other such commands will be added to this
syntax, until a new syntax command is encountered.

When nano is run, this syntax will be automatically activated
if the current filename matches the extended regular
expression fileregex. Or the syntax can be explicitly
activated by using the -Y or --syntax command-line option
followed by the name.

The syntax default is special: it takes no fileregex, and
applies to files that don't match any syntax's regexes. The
syntax none is reserved; specifying it on the command line is
the same as not having a syntax at all.

header "regex" ...
If from all defined syntaxes no fileregex matched, then
compare this regex (or regexes) against the first line of the
current file, to determine whether this syntax should be used
for it.

magic "regex" ...
If no fileregex matched and no header regex matched either,
then compare this regex (or regexes) against the result of
querying the magic database about the current file, to
determine whether this syntax should be used for it. (This
functionality only works when libmagic is installed on the
system and will be silently ignored otherwise.)

formatter program [argument ...]
Run the given program on the full contents of the current
buffer.

linter program [argument ...]
Use the given program to run a syntax check on the current
buffer.

comment "string"
Use the given string for commenting and uncommenting lines.
If the string contains a vertical bar or pipe character (|),
this designates bracket-style comments; for example, "/*|*/"
for CSS files. The characters before the pipe are prepended
to the line and the characters after the pipe are appended at
the end of the line. If no pipe character is present, the
full string is prepended; for example, "#" for Python files.
If empty double quotes are specified, the comment/uncomment
function is disabled; for example, "" for JSON. The default
value is "#".

tabgives "string"
Make the <Tab> key produce the given string. Useful for
languages like Python that want to see only spaces for
indentation. This overrides the setting of the tabstospaces
option.

color [bold,][italic,]fgcolor,bgcolor "regex" ...
Paint all pieces of text that match the extended regular
expression regex with the given foreground and background
colors, at least one of which must be specified. Valid color
names are: red, green, blue, magenta, yellow, cyan, white,
and black. Each of these eight names may be prefixed with the
word light to get a brighter version of that color. The word
grey or gray may be used as a synonym for lightblack. On
terminal emulators that can do at least 256 colors, other
valid (but unprefixable) color names are: pink, purple, mauve,
lagoon, mint, lime, peach, orange, latte, rosy, beet, plum,
sea, sky, slate, teal, sage, brown, ocher, sand, tawny,
brick, crimson, and normal -- where normal means the default
foreground or background color. On such emulators, the color
may also be specified as a three-digit hexadecimal number
prefixed with #, with the digits representing the amounts of
red, green, and blue, respectively. This tells nano to select
from the available palette the color that approximates the
given values.

The color pair may be preceded by bold and/or italic
(separated by commas) to get a bold and/or slanting typeface,
if your terminal can do those.

All coloring commands are applied in the order in which they
are specified, which means that later commands can recolor
stuff that was colored earlier.

icolor [bold,][italic,]fgcolor,bgcolor "regex" ...
Same as above, except that the matching is case insensitive.

color [bold,][italic,]fgcolor,bgcolor start="fromrx" end="torx"
Paint all pieces of text whose start matches extended regular
expression fromrx and whose end matches extended regular
expression torx with the given foreground and background
colors, at least one of which must be specified. This means
that, after an initial instance of fromrx, all text until the
first instance of torx will be colored. This allows syntax
highlighting to span multiple lines.

icolor [bold,][italic,]fgcolor,bgcolor start="fromrx" end="torx"
Same as above, except that the matching is case insensitive.

include "syntaxfile"
Read in self-contained color syntaxes from syntaxfile. Note
that syntaxfile may contain only the above commands, from
syntax to icolor.

extendsyntax name command argument ...
Extend the syntax previously defined as name with another
command. This allows adding a new color, icolor, header,
magic, formatter, linter, comment, or tabgives command to an
already defined syntax -- useful when you want to slightly
improve a syntax defined in one of the system-installed files
(which normally are not writable).

REBINDING KEYS

Key bindings can be changed via the following three commands:

bind key function menu
Rebinds the given key to the given function in the given
menu (or in all menus where the function exists when all is
used).

bind key "string" menu
Makes the given key produce the given string in the given
menu (or in all menus where the key exists when all is
used). The string can consist of text or commands or a mix
of them. (To enter a command into the string, precede its
keystroke with M-V.)

unbind key menu
Unbinds the given key from the given menu (or from all
menus where the key exists when all is used).

The format of key should be one of:

^X where X is a Latin letter, or one of several ASCII
characters (@, ], \, ^, _), or the word "Space". Example:
^C.

M-X where X is any ASCII character except [, or the word
"Space". Example: M-8.

Sh-M-X where X is a Latin letter. Example: Sh-M-U. By default,
each Meta+letter keystroke does the same as the
corresponding Shift+Meta+letter. But when any Shift+Meta
bind is made, that will no longer be the case, for all
letters.

FN where N is a numeric value from 1 to 24. Example: F10.
(Often, F13 to F24 can be typed as F1 to F12 with Shift.)

Ins or Del.

Rebinding ^M (Enter) or ^I (Tab) is probably not a good idea.
Rebinding ^[ (Esc) is not possible, because its keycode is the
starter byte of Meta keystrokes and escape sequences. Rebinding any
of the dedicated cursor-moving keys (the arrows, Home, End, PageUp
and PageDown) is not possible. On some terminals it's not possible
to rebind ^H (unless --raw is used) because its keycode is identical
to that of the Backspace key.

Valid function names to be bound are:

help
Invokes the help viewer.

cancel
Cancels the current command.

exit
Exits from the program (or from the help viewer or file
browser).

writeout
Writes the current buffer to disk, asking for a name.

savefile
Writes the current file to disk without prompting.

insert
Inserts a file into the current buffer (at the current cursor
position), or into a new buffer when option multibuffer is set.

whereis
Starts a forward search for text in the current buffer -- or for
filenames matching a string in the current list in the file
browser.

wherewas
Starts a backward search for text in the current buffer -- or
for filenames matching a string in the current list in the file
browser.

findprevious
Searches the next occurrence in the backward direction.

findnext
Searches the next occurrence in the forward direction.

replace
Interactively replaces text within the current buffer.

cut
Cuts and stores the current line (or the marked region).

copy
Copies the current line (or the marked region) without deleting
it.

paste
Pastes the currently stored text into the current buffer at the
current cursor position.

zap
Throws away the current line (or the marked region). (This
function is bound by default to <Meta+Delete>.)

chopwordleft
Deletes from the cursor position to the beginning of the
preceding word. (This function is bound by default to
<Shift+Ctrl+Delete>. If your terminal produces ^H for
<Ctrl+Backspace>, you can make <Ctrl+Backspace> delete the word
to the left of the cursor by rebinding ^H to this function.)

chopwordright
Deletes from the cursor position to the beginning of the next
word. (This function is bound by default to <Ctrl+Delete>.)

cutrestoffile
Cuts all text from the cursor position till the end of the
buffer.

mark
Sets the mark at the current position, to start selecting text.
Or, when it is set, unsets the mark.

location
Reports the current position of the cursor in the buffer: the
line, column, and character positions.

wordcount
Counts and reports on the status bar the number of lines, words,
and characters in the current buffer (or in the marked region).

execute
Prompts for a program to execute. The program's output will be
inserted into the current buffer (or into a new buffer when M-F
is toggled).

speller
Invokes a spell-checking program, either the default hunspell(1)
or GNU spell(1), or the one defined by --speller or set speller.

formatter
Invokes a full-buffer-processing program (if the active syntax
defines one). (The current buffer is written out to a temporary
file, the program is run on it, and then the temporary file is
read back in, replacing the contents of the buffer.)

linter
Invokes a syntax-checking program (if the active syntax defines
one). If this program produces lines of the form
"filename:linenum:charnum: some message", then the cursor will
be put at the indicated position in the mentioned file while
showing "some message" on the status bar. You can move from
message to message with <PgUp> and <PgDn>, and leave linting
mode with ^C or <Enter>.

justify
Justifies the current paragraph (or the marked region). A
paragraph is a group of contiguous lines that, apart from
possibly the first line, all have the same indentation. The
beginning of a paragraph is detected by either this lone line
with a differing indentation or by a preceding blank line.

fulljustify
Justifies the entire current buffer (or the marked region).

indent
Indents (shifts to the right) the current line or the marked
lines.

unindent
Unindents (shifts to the left) the current line or the marked
lines.

comment
Comments or uncomments the current line or the marked lines,
using the comment style specified in the active syntax.

complete
Completes (when possible) the fragment before the cursor to a
full word found elsewhere in the current buffer.

left
Goes left one position (in the editor or browser).

right
Goes right one position (in the editor or browser).

up
Goes one line up (in the editor or browser).

down
Goes one line down (in the editor or browser).

scrollup
Scrolls the viewport up one row (meaning that the text slides
down) while keeping the cursor in the same text position, if
possible. (This function is bound by default to <Alt+Up>. If
<Alt+Up> does nothing on your Linux console, see the FAQ:
<https://nano-editor.org/dist/latest/faq.html#4.1>.)

scrolldown
Scrolls the viewport down one row (meaning that the text slides
up) while keeping the cursor in the same text position, if
possible. (This function is bound by default to <Alt+Down>.)

center
Scrolls the line with the cursor to the middle of the screen.

prevword
Moves the cursor to the beginning of the previous word.

nextword
Moves the cursor to the beginning of the next word.

home
Moves the cursor to the beginning of the current line.

end
Moves the cursor to the end of the current line.

beginpara
Moves the cursor to the beginning of the current paragraph.

endpara
Moves the cursor to the end of the current paragraph.

prevblock
Moves the cursor to the beginning of the current or preceding
block of text. (Blocks are separated by one or more blank
lines.)

nextblock
Moves the cursor to the beginning of the next block of text.

pageup
Goes up one screenful.

pagedown
Goes down one screenful.

firstline
Goes to the first line of the file.

lastline
Goes to the last line of the file.

gotoline
Goes to a specific line (and column if specified). Negative
numbers count from the end of the file (and end of the line).

findbracket
Moves the cursor to the bracket (or brace or parenthesis, etc.)
that matches (pairs) with the one under the cursor. See set
matchbrackets.

anchor
Places an anchor at the current line, or removes it when already
present. (An anchor is visible when line numbers are
activated.)

prevanchor
Goes to the first anchor before the current line.

nextanchor
Goes to the first anchor after the current line.

prevbuf
Switches to editing/viewing the previous buffer when multiple
buffers are open.

nextbuf
Switches to editing/viewing the next buffer when multiple
buffers are open.

verbatim
Inserts the next keystroke verbatim into the file.

tab
Inserts a tab at the current cursor location.

enter
Inserts a new line below the current one.

delete
Deletes the character under the cursor.

backspace
Deletes the character before the cursor.

recordmacro
Starts the recording of keystrokes -- the keystrokes are stored
as a macro. When already recording, the recording is stopped.

runmacro
Replays the keystrokes of the last recorded macro.

undo
Undoes the last performed text action (add text, delete text,
etc).

redo
Redoes the last undone action (i.e., it undoes an undo).

refresh
Refreshes the screen.

suspend
Suspends the editor and returns control to the shell (until you
tell the process to resume execution with fg).

casesens
Toggles whether searching/replacing ignores or respects the case
of the given characters.

regexp
Toggles whether searching/replacing uses literal strings or
regular expressions.

backwards
Toggles whether searching/replacing goes forward or backward.

older
Retrieves the previous (earlier) entry at a prompt.

newer
Retrieves the next (later) entry at a prompt.

flipreplace
Toggles between searching for something and replacing something.

flipgoto
Toggles between searching for text and targeting a line number.

flipexecute
Toggles between inserting a file and executing a command.

flippipe
When executing a command, toggles whether the current buffer (or
marked region) is piped to the command.

flipnewbuffer
Toggles between inserting into the current buffer and into a new
empty buffer.

flipconvert
When reading in a file, toggles between converting and not
converting it from DOS/Mac format. Converting is the default.

dosformat
When writing a file, switches to writing a DOS format (CR/LF).

macformat
When writing a file, switches to writing a Mac format.

append
When writing a file, appends to the end instead of overwriting.

prepend
When writing a file, 'prepends' (writes at the beginning)
instead of overwriting.

backup
When writing a file, creates a backup of the current file.

discardbuffer
When about to write a file, discard the current buffer without
saving. (This function is bound by default only when option
--saveonexit is in effect.)

browser
Starts the file browser (in the Read File and Write Out menus),
allowing to select a file from a list.

gotodir
Goes to a directory to be specified, allowing to browse anywhere
in the filesystem.

firstfile
Goes to the first file in the list when using the file browser.

lastfile
Goes to the last file in the list when using the file browser.

nohelp
Toggles the presence of the two-line list of key bindings at the
bottom of the screen. (This toggle is special: it is available
in all menus except the help viewer and the linter. All further
toggles are available in the main menu only.)

zero
Toggles the presence of title bar and status bar.

constantshow
Toggles the constant display of the current line, column, and
character positions.

softwrap
Toggles the displaying of overlong lines on multiple screen
lines.

linenumbers
Toggles the display of line numbers in front of the text.

whitespacedisplay
Toggles the showing of whitespace.

nosyntax
Toggles syntax highlighting.

smarthome
Toggles the smartness of the Home key.

autoindent
Toggles whether a newly created line will contain the same
amount of leading whitespace as the preceding line -- or as the
next line if the preceding line is the beginning of a paragraph.

cutfromcursor
Toggles whether cutting text will cut the whole line or just
from the current cursor position to the end of the line.

breaklonglines
Toggles whether long lines will be hard-wrapped to the next
line. (The old name of this function, 'nowrap', is deprecated.)

tabstospaces
Toggles whether typed tabs will be converted to spaces.

mouse
Toggles mouse support.

Valid menu sections are:

main
The main editor window where text is entered and edited.

help
The help-viewer menu.

search
The search menu (AKA whereis).

replace
The 'search to replace' menu.

replacewith
The 'replace with' menu, which comes up after 'search to
replace'.

yesno
The 'yesno' menu, where the Yes/No/All/Cancel question is asked.

gotoline
The 'goto line (and column)' menu.

writeout
The 'write file' menu.

insert
The 'insert file' menu.

browser
The 'file browser' menu, for selecting a file to be opened or
inserted or written to.

whereisfile
The 'search for a file' menu in the file browser.

gotodir
The 'go to directory' menu in the file browser.

execute
The menu for inserting the output from an external command, or
for filtering the buffer (or the marked region) through an
external command, or for executing one of several tools.

spell
The menu of the integrated spell checker where the user can edit
a misspelled word.

linter
The linter menu, which allows jumping through the linting
messages.

all
A special name that encompasses all menus. For bind it means
all menus where the specified function exists; for unbind it
means all menus where the specified key exists.

FILES

/etc/nanorc
System-wide configuration file.

~/.nanorc or $XDG_CONFIG_HOME/nano/nanorc or ~/.config/nano/nanorc
Per-user configuration file.

/usr/share/nano/*
Syntax definitions for the syntax coloring of common file
types (and for less common file types in the extra/
subdirectory).