neovim

Neovim text editor
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intro.txt (29964B)


      1 *intro.txt*     Nvim
      2 
      3 
      4                            NVIM REFERENCE MANUAL
      5 
      6 
      7 Nvim                                                    *ref* *reference*
      8 
      9                                      Type |gO| to see the table of contents.
     10 
     11 ==============================================================================
     12 Introduction                                            *intro*
     13 
     14 Vim is a text editor which includes most commands from the Unix program "Vi"
     15 and many new ones.
     16 
     17 An overview of this manual can be found in the file "help.txt", |help.txt|.
     18 It can be accessed from within Vim with the <Help> or <F1> key and with the
     19 |:help| command (just type ":help", without the bars or quotes).
     20   The 'helpfile' option can be set to the name of the help file, in case it
     21 is not located in the default place.  You can jump to subjects like with tags:
     22 Use CTRL-] to jump to a subject under the cursor, use CTRL-T to jump back.
     23 
     24                                                        *pronounce*
     25 Vim is pronounced as one word, like Jim.  So Nvim is "En-Vim", two syllables.
     26 
     27 This manual is a reference for all Nvim editor and API features.  It is not an
     28 introduction; instead for beginners, there is a hands-on |tutor|, |lua-guide|,
     29 and |user-manual|.
     30 
     31 ------------------------------------------------------------------------------
     32 Resources                                               *resources*
     33 
     34                                                *internet* *www* *distribution*
     35 Nvim home page:
     36 
     37        https://neovim.io/
     38 
     39                                                *book*
     40 There are many resources to learn Vi, Vim, and Nvim.  We recommend:
     41 
     42 - "Practical Vim" by Drew Neil. Acclaimed for its focus on quickly learning
     43  common editing tasks with Vim.
     44 - "Modern Vim" by Drew Neil. Explores new features in Nvim and Vim 8.
     45 - http://vimcasts.org
     46 - "Vim - Vi Improved" by Steve Oualline. This was the first book dedicated to
     47  Vim.  Parts of it were included in the Vim user manual. |frombook|  ISBN:
     48  0735710015
     49 - For more information see https://www.vim.org/iccf/click5.html
     50 - Vim FAQ: https://vimhelp.org/vim_faq.txt.html
     51 
     52                                                *bugs* *bug-report* *feature-request*
     53 Report bugs and request features here: https://github.com/neovim/neovim/issues
     54 Be brief, yet complete.  Always give a reproducible example and try to find
     55 out which settings or other things trigger the bug. If Nvim crashed, try to
     56 get a backtrace (see |dev-tools-backtrace|).
     57 
     58 ==============================================================================
     59 Installing Nvim                                         *install*
     60 
     61                                                *download* *upgrade* *ubuntu*
     62 To install or upgrade Nvim, you can...
     63 - Download a pre-built archive:
     64  https://github.com/neovim/neovim/releases
     65 - Use your system package manager:
     66  https://github.com/neovim/neovim/blob/master/INSTALL.md#install-from-package
     67 - Build from source:
     68  https://github.com/neovim/neovim/blob/master/INSTALL.md#install-from-source
     69 
     70 ------------------------------------------------------------------------------
     71 Un-installing Nvim                                      *uninstall*
     72 
     73 To uninstall Nvim:
     74 - If you downloaded a pre-built archive or built Nvim from source (e.g.
     75  `make install`), just delete its files, typically located in: >
     76  /usr/local/bin/nvim
     77  /usr/local/share/nvim
     78 <
     79  - To find where Nvim is installed, run these commands: >
     80    :echo v:progpath
     81    :echo $VIMRUNTIME
     82 <
     83 - If you installed via package manager, read your package manager's
     84  documentation. Common examples:
     85  - APT (Debian, Ubuntu, …): `apt-get remove neovim`
     86  - Homebrew (macOS): `brew uninstall neovim`
     87  - Scoop (Windows): `scoop uninstall neovim`
     88 
     89 ==============================================================================
     90 Sponsor Vim/Nvim development                            *sponsor*
     91 
     92 Fixing bugs and adding new features takes a lot of time and effort.  To show
     93 your appreciation for the work and motivate developers to continue working on
     94 Vim please send a donation.
     95 
     96 The money you donated will be mainly used to help children in Uganda.  See
     97 |uganda|.  But at the same time donations increase the development team
     98 motivation to keep working on Vim!
     99 
    100 For the most recent information about sponsoring look on the Vim web site:
    101 
    102        https://www.vim.org/sponsor/
    103 
    104 
    105 Nvim development is funded separately from Vim:
    106 
    107        https://neovim.io/#sponsor
    108 
    109 ==============================================================================
    110 Bram Moolenaar                  *Bram* *Moolenaar* *Bram-Moolenaar* *brammool*
    111 
    112 Nvim is a fork of the Vim ("Vi IMproved") text editor, which was originally
    113 developed by Bram Moolenaar.  Searching his name within the source code of
    114 Nvim will reveal just how much of his work still remains in Nvim.
    115 On August 3, 2023, he passed away at the age of 62.  If Vim or Nvim have been
    116 of use to you in your life, please read |Uganda| and consider honoring his
    117 memory however you may see fit.
    118 
    119 - Obituary Articles: https://github.com/vim/vim/discussions/12742
    120 - Say Farewell: https://github.com/vim/vim/discussions/12737
    121 
    122 ==============================================================================
    123 Keycodes                                 *key-notation* *key-codes* *keycodes*
    124 
    125 These names for keys are used in the documentation.  They can also be used
    126 with the ":map" command.
    127 
    128 notation        meaning             equivalent  decimal value(s)        ~
    129 <Nul>           Zero                    CTRL-@    0 (stored as 10) *<Nul>*
    130 <BS>            Backspace               CTRL-H    8     *backspace*
    131 <Tab>           Tab                     CTRL-I    9     *tab* *Tab*
    132                                                        *linefeed*
    133 <NL>            Linefeed                CTRL-J   10 (used for <Nul>)
    134 <CR>            Carriage return         CTRL-M   13     *carriage-return*
    135 <Return>        Same as <CR>                            *<Return>*
    136 <Enter>         Same as <CR>                            *<Enter>*
    137 <Esc>           Escape                  CTRL-[   27     *escape* *<Esc>*
    138 <Space>         Space                            32     *space*
    139 <lt>            Less-than               <        60     *<lt>*
    140 <Bslash>        Backslash               \        92     *backslash* *<Bslash>*
    141 <Bar>           Vertical bar            |       124     *<Bar>*
    142 <Del>           Delete                          127
    143 <CSI>           Command sequence intro  ALT-Esc 155     *<CSI>*
    144 
    145 <EOL>           End-of-line (can be <CR>, <NL> or <CR><NL>,
    146                Depends on system and 'fileformat')     *<EOL>*
    147 <Ignore>        Cancel wait-for-character               *<Ignore>*
    148 <NOP>           Do nothing (no-op). Useful in mappings. *<Nop>*
    149                <Ignore> is a key, <NOP> is "absence of a key".
    150 
    151 <Up>            Cursor-up                       *cursor-up* *cursor_up*
    152 <Down>          Cursor-down                     *cursor-down* *cursor_down*
    153 <Left>          Cursor-left                     *cursor-left* *cursor_left*
    154 <Right>         Cursor-right                    *cursor-right* *cursor_right*
    155 <S-Up>          Shift-cursor-up
    156 <S-Down>        Shift-cursor-down
    157 <S-Left>        Shift-cursor-left
    158 <S-Right>       Shift-cursor-right
    159 <C-Left>        Control-cursor-left
    160 <C-Right>       Control-cursor-right
    161 <F1> - <F12>    Function keys 1 to 12           *function_key* *function-key*
    162 <S-F1> - <S-F12> Shift-function keys 1 to 12    *<S-F1>*
    163 <Help>          Help key
    164 <Undo>          Undo key
    165 <Find>          Find key
    166 <Select>        Select key
    167 <Insert>        Insert key
    168 <Home>          Home                            *home*
    169 <End>           End                             *end*
    170 <PageUp>        Page-up                         *page_up* *page-up*
    171 <PageDown>      Page-down                       *page_down* *page-down*
    172 <kUp>           Keypad cursor-up                *keypad-cursor-up*
    173 <kDown>         Keypad cursor-down              *keypad-cursor-down*
    174 <kLeft>         Keypad cursor-left              *keypad-cursor-left*
    175 <kRight>        Keypad cursor-right             *keypad-cursor-right*
    176 <kHome>         Keypad home (upper left)        *keypad-home*
    177 <kEnd>          Keypad end (lower left)         *keypad-end*
    178 <kOrigin>       Keypad origin (middle)          *keypad-origin*
    179 <kPageUp>       Keypad page-up (upper right)    *keypad-page-up*
    180 <kPageDown>     Keypad page-down (lower right)  *keypad-page-down*
    181 <kDel>          Keypad delete                   *keypad-delete*
    182 <kPlus>         Keypad +                        *keypad-plus*
    183 <kMinus>        Keypad -                        *keypad-minus*
    184 <kMultiply>     Keypad *                        *keypad-multiply*
    185 <kDivide>       Keypad /                        *keypad-divide*
    186 <kPoint>        Keypad .                        *keypad-point*
    187 <kComma>        Keypad ,                        *keypad-comma*
    188 <kEqual>        Keypad =                        *keypad-equal*
    189 <kEnter>        Keypad Enter                    *keypad-enter*
    190 <k0> - <k9>     Keypad 0 to 9                   *keypad-0* *keypad-9*
    191 <S-…>           Shift-key                       *shift* *<S-*
    192 <C-…>           Control-key                     *control* *ctrl* *<C-*
    193 <M-…>           Alt-key or meta-key             *META* *ALT* *<M-*
    194 <A-…>           Same as <M-…>                   *<A-*
    195 <T-…>           Meta-key, when it's not alt     *<T-*
    196 <D-…>           Command-key or "super" key      *<D-*
    197 
    198 
    199 Note:
    200 
    201 - Availability of some keys (<Help>, <S-Right>, …) depends on the UI or host
    202  terminal.
    203 - If numlock is on the |TUI| receives plain ASCII values, so mapping <k0>,
    204  <k1>, ..., <k9> and <kPoint> will not work.
    205 - Nvim supports mapping multibyte chars with modifiers such as `<M-ä>`. Which
    206  combinations actually work depends on the UI or host terminal.
    207 - When a key is pressed using a meta or alt modifier and no mapping exists for
    208  that keypress, Nvim may behave as though <Esc> was pressed before the key.
    209 - It is possible to notate combined modifiers (e.g. <M-C-T> for CTRL-ALT-T),
    210  but your terminal must encode the input for that to work. |tui-input|
    211 
    212                                                                *<>*
    213 Examples are often given in the <> notation.  Sometimes this is just to make
    214 clear what you need to type, but often it can be typed literally, e.g., with
    215 the ":map" command.  The rules are:
    216 1.  Printable characters are typed directly, except backslash and "<"
    217 2.  Backslash is represented with "\\", double backslash, or "<Bslash>".
    218 3.  Literal "<" is represented with "\<" or "<lt>".  When there is no
    219    confusion possible, "<" can be used directly.
    220 4.  "<key>" means the special key typed (see the table above).  Examples:
    221    - <Esc>             Escape key
    222    - <C-G>             CTRL-G
    223    - <Up>              cursor up key
    224    - <C-LeftMouse>     Control- left mouse click
    225    - <S-F11>           Shifted function key 11
    226    - <M-a>             Meta- a  ('a' with bit 8 set)
    227    - <M-A>             Meta- A  ('A' with bit 8 set)
    228 
    229 The <> notation uses <lt> to escape the special meaning of key names.  Using a
    230 backslash also works, but only when 'cpoptions' does not include the 'B' flag.
    231 
    232 Examples for mapping CTRL-H to the six characters "<Home>": >vim
    233        :imap <C-H> \<Home>
    234        :imap <C-H> <lt>Home>
    235 The first one only works when the 'B' flag is not in 'cpoptions'.  The second
    236 one always works.
    237 To get a literal "<lt>" in a mapping: >vim
    238        :map <C-L> <lt>lt>
    239 
    240 The notation can be used in a double quoted strings, using "\<" at the start,
    241 e.g. "\<C-Space>".  This results in a special key code.  To convert this back
    242 to readable text use `keytrans()`.
    243 
    244 ==============================================================================
    245 Modes, introduction                             *vim-modes-intro* *vim-modes*
    246 
    247 Vim has seven BASIC modes:
    248 
    249                                        *Normal* *Normal-mode* *command-mode*
    250 - Normal mode:          In Normal mode you can enter all the normal editor
    251                        commands.  If you start the editor you are in this
    252                        mode.  This is also known as command mode.
    253 
    254 - Visual mode:          This is like Normal mode, but the movement commands
    255                        extend a highlighted area.  When a non-movement
    256                        command is used, it is executed for the highlighted
    257                        area.  See |Visual-mode|.
    258                        If the 'showmode' option is on "-- VISUAL --" is shown
    259                        at the bottom of the window.
    260 
    261 - Select mode:          This looks most like the MS-Windows selection mode.
    262                        Typing a printable character deletes the selection
    263                        and starts Insert mode.  See |Select-mode|.
    264                        If the 'showmode' option is on "-- SELECT --" is shown
    265                        at the bottom of the window.
    266 
    267 - Insert mode:          In Insert mode the text you type is inserted into the
    268                        buffer.  See |Insert-mode|.
    269                        If the 'showmode' option is on "-- INSERT --" is shown
    270                        at the bottom of the window.
    271 
    272 - Cmdline mode:         In Command-line mode (also called Cmdline mode) you
    273                        can enter one line of text at the bottom of the
    274                        window.  This is for the Ex commands, ":", the pattern
    275                        search commands, "?" and "/", and the filter command,
    276                        "!".  |Cmdline-mode|
    277 
    278 - Ex mode:              Like Command-line mode, but after entering a command
    279                        you remain in Ex mode.  Very limited editing of the
    280                        command line.  |Ex-mode|
    281 
    282                                                        *Terminal-mode*
    283 - Terminal mode:        In Terminal mode all input (except CTRL-\) is sent to
    284                        the process running in the current |terminal| buffer.
    285                        If CTRL-\ is pressed, the next key is sent unless it
    286                        is CTRL-N (|CTRL-\_CTRL-N|) or CTRL-O (|t_CTRL-\_CTRL-O|).
    287                        If the 'showmode' option is on "-- TERMINAL --" is shown
    288                        at the bottom of the window.
    289 
    290 There are six ADDITIONAL modes.  These are variants of the BASIC modes:
    291 
    292                                *Operator-pending* *Operator-pending-mode*
    293 - Operator-pending mode: This is like Normal mode, but after an operator
    294                        command has started, and Vim is waiting for a {motion}
    295                        to specify the text that the operator will work on.
    296 
    297 - Replace mode:         Replace mode is a special case of Insert mode.  You
    298                        can do the same things as in Insert mode, but for
    299                        each character you enter, one character of the
    300                        existing text is deleted.  See |Replace-mode|.
    301                        If the 'showmode' option is on "-- REPLACE --" is
    302                        shown at the bottom of the window.
    303 
    304 - Virtual Replace mode: Virtual Replace mode is similar to Replace mode, but
    305                        instead of file characters you are replacing screen
    306                        real estate.  See |Virtual-Replace-mode|.
    307                        If the 'showmode' option is on "-- VREPLACE --" is
    308                        shown at the bottom of the window.
    309 
    310 - Insert Normal mode:   Entered when CTRL-O is typed in Insert mode (see
    311                        |i_CTRL-O|).  This is like Normal mode, but after
    312                        executing one command Vim returns to Insert mode.
    313                        If the 'showmode' option is on "-- (insert) --" is
    314                        shown at the bottom of the window.
    315 
    316 - Insert Visual mode:   Entered when starting a Visual selection from Insert
    317                        mode, e.g., by using CTRL-O and then "v", "V" or
    318                        CTRL-V.  When the Visual selection ends, Vim returns
    319                        to Insert mode.
    320                        If the 'showmode' option is on "-- (insert) VISUAL --"
    321                        is shown at the bottom of the window.
    322 
    323 - Insert Select mode:   Entered when starting Select mode from Insert mode.
    324                        E.g., by dragging the mouse or <S-Right>.
    325                        When the Select mode ends, Vim returns to Insert mode.
    326                        If the 'showmode' option is on "-- (insert) SELECT --"
    327                        is shown at the bottom of the window.
    328 
    329 ==============================================================================
    330 Switching from mode to mode                             *mode-switching*
    331 
    332 If for any reason you do not know which mode you are in, you can always get
    333 back to Normal mode by typing <Esc> twice.  This doesn't work for Ex mode
    334 though, use ":visual".
    335 You will know you are back in Normal mode when you see the screen flash or
    336 hear the bell after you type <Esc>.  However, when pressing <Esc> after using
    337 CTRL-O in Insert mode you get a beep but you are still in Insert mode, type
    338 <Esc> again.
    339 
    340                                                        *i_esc*
    341 >
    342 FROM mode      TO mode
    343                Normal  Visual  Select  Insert    Replace   Cmd-line  Ex >
    344 Normal                 v V ^V    *4     *1        R gR     : / ? !   gQ
    345 Visual          *2               ^G     c C        --        :       --
    346 Select          *5     ^O ^G            *6         --        --      --
    347 Insert          <Esc>    --      --              <Insert>    --      --
    348 Replace         <Esc>    --      --    <Insert>              --      --
    349 Command-line    *3       --      --     :start     --                --
    350 Ex              :vi      --      --     --         --        --
    351 
    352 -- not possible
    353 <
    354 
    355 - 1 Go from Normal mode to Insert mode by giving the command "i", "I", "a",
    356    "A", "o", "O", "c", "C", "s" or S".
    357 - 2 Go from Visual mode to Normal mode by giving a non-movement command, which
    358    causes the command to be executed, or by hitting <Esc> "v", "V" or "CTRL-V"
    359    (see |v_v|), which just stops Visual mode without side effects.
    360 - 3 Go from Command-line mode to Normal mode by:
    361    - Hitting <CR> or <NL>, which causes the entered command to be executed.
    362    - Deleting the complete line (e.g., with CTRL-U) and giving a final <BS>.
    363    - Hitting CTRL-C or <Esc>, which quits the command-line without executing
    364      the command.
    365    In the last case <Esc> may be the character defined with the 'wildchar'
    366    option, in which case it will start command-line completion.  You can
    367    ignore that and type <Esc> again.
    368 - 4 Go from Normal to Select mode by:
    369    - use the mouse to select text while 'selectmode' contains "mouse"
    370    - use a non-printable command to move the cursor while keeping the Shift
    371      key pressed, and the 'selectmode' option contains "key"
    372    - use "v", "V" or "CTRL-V" while 'selectmode' contains "cmd"
    373    - use "gh", "gH" or "g CTRL-H"  |g_CTRL-H|
    374 - 5 Go from Select mode to Normal mode by using a non-printable command to move
    375    the cursor, without keeping the Shift key pressed.
    376 - 6 Go from Select mode to Insert mode by typing a printable character.  The
    377    selection is deleted and the character is inserted.
    378 
    379                        *CTRL-\_CTRL-N* *i_CTRL-\_CTRL-N* *c_CTRL-\_CTRL-N*
    380                                      *v_CTRL-\_CTRL-N* *t_CTRL-\_CTRL-N*
    381 Additionally the command CTRL-\ CTRL-N or <C-\><C-N> can be used to go to
    382 Normal mode from any other mode.  This can be used to make sure Vim is in
    383 Normal mode, without causing a beep like <Esc> would.  However, this does not
    384 work in Ex mode.  When used after a command that takes an argument, such as
    385 |f| or |m|, the timeout set with 'ttimeoutlen' applies.
    386 
    387        *CTRL-\_CTRL-G* *i_CTRL-\_CTRL-G* *c_CTRL-\_CTRL-G* *v_CTRL-\_CTRL-G*
    388 CTRL-\ CTRL-G works the same as |CTRL-\_CTRL-N| for backward compatibility.
    389 
    390                                *gQ* *mode-Ex* *Ex-mode* *Ex* *EX* *E501*
    391 gQ                      Switch to Ex mode.  This is like typing ":" commands
    392                        one after another, except:
    393                        - You don't have to keep pressing ":".
    394                        - The screen doesn't get updated after each command.
    395                        Use the `:vi` command (|:visual|) to exit this mode.
    396 
    397 ==============================================================================
    398 Window contents                                         *window-contents*
    399 
    400 In Normal mode and Insert/Replace mode the screen window will show the current
    401 contents of the buffer: What You See Is What You Get.  There are two
    402 exceptions:
    403 - When the 'cpoptions' option contains '$', and the change is within one line,
    404  the text is not directly deleted, but a '$' is put at the last deleted
    405  character.
    406 - When inserting text in one window, other windows on the same text are not
    407  updated until the insert is finished.
    408 
    409 Lines longer than the window width will wrap, unless the 'wrap' option is off
    410 (see below).  The 'linebreak' option can be set to wrap at a blank character.
    411 
    412 If the window has room after the last line of the buffer, Vim will show '~' in
    413 the first column of the last lines in the window, like this:
    414 >
    415        +-----------------------+
    416        |some line              |
    417        |last line              |
    418        |~                      |
    419        |~                      |
    420        +-----------------------+
    421 <
    422 Thus the '~' lines indicate that the end of the buffer was reached.
    423 
    424 If the last line in a window doesn't fit, Vim will indicate this with a '@' in
    425 the first column of the last lines in the window, like this:
    426 >
    427        +-----------------------+
    428        |first line             |
    429        |second line            |
    430        |@                      |
    431        |@                      |
    432        +-----------------------+
    433 <
    434 Thus the '@' lines indicate that there is a line that doesn't fit in the
    435 window.
    436 
    437 When the "lastline" flag is present in the 'display' option, you will not see
    438 '@' characters at the left side of window.  If the last line doesn't fit
    439 completely, only the part that fits is shown, and the last three characters of
    440 the last line are replaced with "@@@", like this:
    441 >
    442        +-----------------------+
    443        |first line             |
    444        |second line            |
    445        |a very long line that d|
    446        |oesn't fit in the wi@@@|
    447        +-----------------------+
    448 <
    449 If there is a single line that is too long to fit in the window, this is a
    450 special situation.  Vim will show only part of the line, around where the
    451 cursor is.  There are no special characters shown, so that you can edit all
    452 parts of this line.
    453 
    454 The |hl-NonText| highlight group can be used to set special highlighting
    455 for the '@' and '~' characters.  This makes it possible to distinguish them
    456 from real characters in the buffer.
    457 
    458 The 'showbreak' option contains the string to put in front of wrapped lines.
    459 
    460                                                        *wrap-off*
    461 If the 'wrap' option is off, long lines will not wrap.  Only the part that
    462 fits on the screen is shown.  If the cursor is moved to a part of the line
    463 that is not shown, the screen is scrolled horizontally.  The advantage of
    464 this method is that columns are shown as they are and lines that cannot fit
    465 on the screen can be edited.  The disadvantage is that you cannot see all the
    466 characters of a line at once.  The 'sidescroll' option can be set to the
    467 minimal number of columns to scroll.
    468 
    469 All normal ASCII characters are displayed directly on the screen.  The <Tab>
    470 is replaced with the number of spaces that it represents.  Other non-printing
    471 characters are replaced with "^{char}", where {char} is the non-printing
    472 character with 64 added.  Thus character 7 (bell) will be shown as "^G".
    473 Characters between 127 and 160 are replaced with "~{char}", where {char} is
    474 the character with 64 subtracted.  These characters occupy more than one
    475 position on the screen.  The cursor can only be positioned on the first one.
    476 
    477 If you set the 'number' option, all lines will be preceded with their
    478 number.  Tip: If you don't like wrapping lines to mix with the line numbers,
    479 set the 'showbreak' option to eight spaces: >
    480        ":set showbreak=\ \ \ \ \ \ \ \ "
    481 
    482 If you set the 'list' option, <Tab> characters will not be shown as several
    483 spaces, but as "^I".  A '$' will be placed at the end of the line, so you can
    484 find trailing blanks.
    485 
    486 In Command-line mode only the command-line itself is shown correctly.  The
    487 display of the buffer contents is updated as soon as you go back to Command
    488 mode.
    489 
    490 The last line of the window is used for status and other messages.  The
    491 status messages will only be used if an option is on: >
    492 
    493  status message                option       default    Unix default
    494  current mode                  'showmode'      on          on
    495  command characters            'showcmd'       on          off
    496  cursor position               'ruler'         off         off
    497 
    498 The current mode is "-- INSERT --" or "-- REPLACE --", see 'showmode'.  The
    499 command characters are those that you typed but were not used yet.
    500 
    501 If you have a slow terminal you can switch off the status messages to speed
    502 up editing: >
    503        :set nosc noru nosm
    504 
    505 If there is an error, an error message will be shown for at least one second
    506 (in reverse video).
    507 
    508 Some commands show how many lines were affected.  Above which threshold this
    509 happens can be controlled with the 'report' option (default 2).
    510 
    511 The name Vim and the full name of the current file name will be shown in the
    512 title bar.  When the window is resized, Vim will automatically redraw the
    513 window.  You may make the window as small as you like, but if it gets too
    514 small not a single line will fit in it.  Make it at least 40 characters wide
    515 to be able to read most messages on the last line.
    516 
    517 ==============================================================================
    518 Definitions                                             *definitions* *jargon*
    519 
    520 - buffer: Contains lines of text, usually from a file.
    521 - screen: The whole area that Nvim uses to display things.
    522 - window: A view on a buffer.  There can be multiple windows for one buffer.
    523 - frame: Windows are kept in a tree of frames.  Each frame contains a column,
    524  row, or window ("leaf" frame).
    525 
    526 A screen contains one or more windows, separated by status lines and with the
    527 command line at the bottom.
    528 >
    529        +-------------------------------+
    530 screen | window 1      | window 2      |
    531        |               |               |
    532        |               |               |
    533        |= status line =|= status line =|
    534        | window 3                      |
    535        |                               |
    536        |                               |
    537        |==== status line ==============|
    538        |command line                   |
    539        +-------------------------------+
    540 <
    541 The command line is also used for messages.  It scrolls up the screen when
    542 there is not enough room in the command line.
    543 
    544 A difference is made between four types of lines:
    545 
    546 - buffer lines:  The lines in the buffer.  This is the same as the
    547                 lines as they are read from/written to a file.  They
    548                 can be thousands of characters long.
    549 - logical lines: The buffer lines with folding applied.  Buffer lines
    550                 in a closed fold are changed to a single logical line:
    551                 "+-- 99 lines folded".  They can be thousands of
    552                 characters long.
    553 - window lines:  The lines displayed in a window: A range of logical
    554                 lines with wrapping, line breaks, etc.  applied.  They
    555                 can only be as long as the width of the window allows,
    556                 longer lines are wrapped or truncated.
    557 - screen lines:  The lines of the screen that Nvim uses.  Consists of
    558                 the window lines of all windows, with status lines
    559                 and the command line added.  They can only be as long
    560                 as the width of the screen allows.  When the command
    561                 line gets longer it wraps and lines are scrolled to
    562                 make room.
    563 
    564 >
    565  buffer lines    logical lines   window lines    screen lines
    566  -----------------------------------------------------------------------
    567  1. one          1. one          1. +-- folded   1.  +-- folded
    568  2. two          2. +-- folded   2. five         2.  five
    569  3. three        3. five         3. six          3.  six
    570  4. four         4. six          4. seven        4.  seven
    571  5. five         5. seven                        5.  === status line ===
    572  6. six                                          6.  aaa
    573  7. seven                                        7.  bbb
    574                                                  8.  ccc ccc c
    575  1. aaa          1. aaa          1. aaa          9.  cc
    576  2. bbb          2. bbb          2. bbb          10. ddd
    577  3. ccc ccc ccc  3. ccc ccc ccc  3. ccc ccc c    11. ~
    578  4. ddd          4. ddd          4. cc           12. === status line ===
    579                                  5. ddd          13. (command line)
    580                                  6. ~
    581 <
    582 
    583 API client ~
    584 All external UIs and remote plugins (as opposed to regular Vim plugins) are
    585 "clients" in general; but we call something an "API client" if its purpose is
    586 to abstract or wrap the RPC API for the convenience of other applications
    587 (just like a REST client or SDK such as boto3 for AWS: you can speak AWS REST
    588 using an HTTP client like curl, but boto3 wraps that in a convenient python
    589 interface). For example, the Nvim node-client is an API client:
    590    https://github.com/neovim/node-client
    591 
    592 
    593 Host ~
    594 A plugin "host" is both a client (of the Nvim API) and a server (of an
    595 external platform, e.g. python). It is a remote plugin that hosts other
    596 plugins.
    597 
    598 
    599 Remote plugin ~
    600 Arbitrary code registered via |:UpdateRemotePlugins|, that runs in a separate
    601 process and communicates with Nvim via the |api|.
    602 
    603 
    604 vim:tw=78:ts=8:et:sw=4:ft=help:norl: