Doc: List supported FakeVim modes and emulated commands

Change-Id: I9fe1f0982829aa4e5998f03f098bef7679b44443
Done-by: Lukas Holecek
Reviewed-by: Lukas Holecek <hluk@email.cz>
Reviewed-by: hjk <hjk@qt.io>

doc/src/editors/creator-editors.qdoc

@@ -1160,10 +1160,160 @@
     mode, select \uicontrol Edit > \uicontrol Advanced >
     \uicontrol {Use Vim-style Editing} or press \key {Alt+V,Alt+V}.
 
+    \section1 Supported Modes and Commands
+
     In the \uicontrol FakeVim mode, most keystrokes in the main editor will be
-    intercepted and interpreted in a way that resembles Vim. Documentation for
-    Vim is not included in \QC. For more information on using Vim, see
-    \l{http://www.vim.org/docs.php}{Documentation} on the Vim web site.
+    intercepted and interpreted in a way that resembles Vim. Most of the
+    supported commands can be followed by a motion command or executed in visual
+    mode, or they work with registers or can be prefixed with a number of
+    repetitions.
+
+    The following sections describe the commands emulated in the supported modes
+    and how they diverge from Vim in functionality:
+
+    \list
+        \li Normal
+        \li Visual
+        \li Command line (:)
+        \li Insert and replace
+    \endlist
+
+    For more information on using Vim, see \l{http://www.vim.org/docs.php}
+    {Documentation} on the Vim web site.
+
+    \section2 Normal and Visual Modes
+
+    \list
+        \li Basic movement, such as \c h/j/k/l, \c <C-U>, \c <C-D>, \c <C-F>,
+            \c <C-B>, \c gg, \c G, \c 0, \c ^, \c $
+        \li Word movement, such as \c w, \c e, \c b
+        \li \e Inner/a movement, such as \c ciw, \c 3daw, ya{
+        \li \c f and \c t movement
+        \li \c [ and \c ] movement
+        \li { and } paragraph movement
+        \li Delete/change/yank/paste with register
+        \li Undo and redo
+        \li \c <C-A> and \c <C-X> increase or decrease a number in decimal,
+            octal, or hexadecimal format (for example \c 128<C-A> on or before
+            \c "0x0ff" changes it to \c "0x17f")
+        \li \c . repeats the last change
+        \li \c /search, \c ?search, \c *, \c #, \c n, \c N - most of regular
+            expression syntax is used in Vim except that \c \< and \c \> are
+            the same as \c {\b} in QRegExp
+        \li \c @ and \c q (macro recording and execution) special keys are saved
+            as \c <S-Left>
+        \li Marks
+        \li \c gv goes to last visual selection; can differ if text is edited
+            around it
+        \li Indentation using \c =, \c <<, \c >>, with movement, count, and in
+            visual mode
+        \li \e {to upper/lower}, such as \c ~, \c gU, \c gu
+        \li \c i, \c a, \c o, \c I, \c A, and \c O enter insert mode
+        \li Scroll window, such as \c zt, \c zb, \c zz
+        \li Wrap line movement, such as \c gj, \c gk, \c g0, \c g^, \c g$
+    \endlist
+
+    \section2 Command Line Mode
+
+    \list
+        \li \c :map, \c :unmap, \c :inoremap, and so on
+        \li \c :source provides very basic line-by-line sourcing of vimrc files
+        \li \c :substitute substitutes an expression in a range
+        \li \c :'<,'>!cmd filters through an external command (for example,
+            sorts the lines in a file with \c :%!sort)
+        \li \c :.!cmd inserts the standard output of an external command
+        \li \c :read
+        \li \c :yank, \c :delete, \c :change
+        \li \c :move, \c :join
+        \li \c :20 goes to an address
+        \li \c :history
+        \li \c :registers, \c :display
+        \li \c :nohlsearch
+        \li \c :undo, \c :redo
+        \li \c :normal
+        \li \c :<, \c :>
+    \endlist
+
+    \section2 Insert Mode
+
+    \list
+        \li \c <C-O> executes a single command and returns to insert mode
+        \li \c <C-V> inserts a raw character
+        \li \c <insert> toggles replace mode
+    \endlist
+
+    \section2 Options
+
+    Use \c {:set ...} to set the following options:
+
+    \list
+        \li \c autoindent
+        \li \c clipboard
+        \li \c backspace
+        \li \c expandtab
+        \li \c hlsearch
+        \li \c ignorecase
+        \li \c incsearch
+        \li \c indent
+        \li \c iskeyword
+        \li \c scrolloff
+        \li \c shiftwidth
+        \li \c showcmd
+        \li \c smartcase
+        \li \c smartindent
+        \li \c smarttab
+        \li \c startofline
+        \li \c tabstop
+        \li \c tildeop
+        \li \c wrapscan
+    \endlist
+
+    \section2 Vimrc Example
+
+    \code
+    " highlight matched
+    set hlsearch
+    " case insensitive search
+    set ignorecase
+    set smartcase
+    " search while typing
+    set incsearch
+    " wrap-around when searching
+    set wrapscan
+    " show pressed keys in lower right corner
+    set showcmd
+    " tab -> spaces
+    set expandtab
+    set tabstop=4
+    set shiftwidth=4
+    " keep a 5 line buffer for the cursor from top/bottom of window
+    set scrolloff=5
+    " X11 clipboard
+    set clipboard=unnamed
+    " use ~ with movement
+    set tildeop
+
+    " mappings
+    nnoremap ; :
+    inoremap jj <Esc>
+
+    " clear highlighted search term on space
+    noremap <silent> <Space> :nohls<CR>
+
+    " reselect visual block after indent
+    vnoremap < <gv
+    vnoremap > >gv
+
+    " MOVE LINE/BLOCK
+    nnoremap <C-S-J> :m+<CR>==
+    nnoremap <C-S-K> :m-2<CR>==
+    inoremap <C-S-J> <Esc>:m+<CR>==gi
+    inoremap <C-S-K> <Esc>:m-2<CR>==gi
+    vnoremap <C-S-J> :m'>+<CR>gv=gv
+    vnoremap <C-S-K> :m-2<CR>gv=gv
+    \endcode
+
+    \section1 Mapping FakeVim Commands
 
     To map commands entered on the \uicontrol FakeVim command line to actions
     of the \QC core, select \uicontrol Tools > \uicontrol Options >
@@ -1174,6 +1324,8 @@
     \uicontrol {User Command Mapping}. The user command mapped to the shortcut
     is executed by FakeVim as if you were typing it (as when replaying a macro).
 
+    \section1 Specifying FakeVim Options
+
     To make changes to the Vim-style settings, select \uicontrol Tools >
     \uicontrol Options > \uicontrol FakeVim > \uicontrol General.
 
@@ -1189,6 +1341,8 @@
     \uicontrol Options > \uicontrol {Text Editor} > \uicontrol {Fonts & Color}.
     In the \uicontrol {Color Scheme} list, select \uicontrol {Vim (dark)}.
 
+    \section1 Quitting FakeVim Mode
+
     To quit the FakeVim mode, unselect \uicontrol Tools > \uicontrol Options >
     \uicontrol FakeVim > \uicontrol {Use FakeVim} or press \key {Alt+V,Alt+V}.