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|
Vis
===
The core Vis API.
Lifecycle
---------
.. doxygengroup:: vis_lifecycle
:content-only:
Draw
----
.. doxygengroup:: vis_draw
:content-only:
Windows
-------
.. doxygengroup:: vis_windows
:content-only:
Input
-----
The editor core processes input through a sequences of symbolic keys:
* Special keys such as ``<Enter>``, ``<Tab>`` or ``<Backspace>`` as reported by
`termkey_strfkey <http://www.leonerd.org.uk/code/libtermkey/doc/termkey_strfkey.3.html>`_.
.. note:: The prefixes ``C-``, ``S-`` and ``M-`` are used to denote the ``Ctrl``,
``Shift`` and ``Alt`` modifiers, respectively.
* Key action names as registered with `vis_action_register`.
.. note:: By convention they are prefixed with ``vis-`` as in ``<vis-nop>``.
* Regular UTF-8 encoded input.
.. note:: An exhaustive list of the first two types is displayed in the ``:help`` output.
.. doxygengroup:: vis_keys
:content-only:
Key Map
-------
The key map is used to translate keys in non-input modes, *before* any key
bindings are evaluated. It is intended to facilitate usage of non-latin keyboard
layouts.
.. doxygengroup:: vis_keymap
:content-only:
Key Binding
-----------
Each mode has a set of key bindings. A key binding maps a key to either
another key (referred to as an alias) or a key action (implementing an
editor operation).
If a key sequence is ambiguous (i.e. it is a prefix of multiple mappings)
more input is awaited, until a unique mapping can be resolved.
.. warning:: Key aliases are always evaluated recursively.
.. doxygengroup:: vis_keybind
:content-only:
Key Action
----------
A key action is invoked by a key binding and implements a certain editor function.
The editor operates like a finite state machine with key sequences as
transition labels. Once a prefix of the input queue uniquely refers to a
key action, it is invoked with the remainder of the input queue passed as argument.
.. note:: A triggered key action currently does not know through which key binding
it was invoked. TODO: change that?
.. doxygengroup:: vis_action
:content-only:
Modes
-----
A mode defines *enter*, *leave* and *idle* actions and captures a set of
key bindings.
Modes are hierarchical, key bindings are searched recursively towards
the top of the hierarchy stopping at the first match.
.. doxygenenum:: VisMode
.. doxygengroup:: vis_modes
:content-only:
Count
-----
Dictates how many times a motion or text object is evaluated. If none
is specified, a minimal count of 1 is assumed.
.. doxygengroup:: vis_count
:content-only:
Operators
---------
.. doxygengroup:: vis_operators
:content-only:
Motions
-------
.. doxygengroup:: vis_motions
:content-only:
Text Objects
------------
.. doxygengroup:: vis_textobjs
:content-only:
Marks
-----
Marks keep track of a given text position.
.. note:: Marks are currently file local.
.. doxygengroup:: vis_marks
:content-only:
Registers
---------
.. doxygengroup:: vis_registers
:content-only:
Macros
------
Macros are a sequence of keys stored in a Register which can be reprocessed
as if entered by the user.
.. warning:: Macro support is currently half-baked. If you do something stupid
(e.g. use mutually recursive macros), you will likely encounter
stack overflows.
.. doxygengroup:: vis_macros
:content-only:
Commands
--------
.. doxygengroup:: vis_cmds
:content-only:
Options
-------
.. doxygengroup:: vis_options
:content-only:
Modification
------------
These function operate on the currently focused window but ensure that
all windows which show the affected region are redrawn too.
.. doxygengroup:: vis_changes
:content-only:
Interaction
-----------
.. doxygengroup:: vis_info
:content-only:
Miscellaneous
-------------
.. doxygengroup:: vis_misc
:content-only:
|
