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Decouple register content from cursors. Previously each cursor had
exactly one corresponding register. Now each register can save a
list of values whose lifetime is not tied to the cursor.
If multiple cursors exist and a put with a register holding only
a single value is performed, then this value is inserted at every
cursor location. If there are fewer values available than cursors,
then only the matching ones will be used. If a register holding
multiple values is inserted in a single cursor context, only the
first value will be used. Another option would be to join all
existing values. The details of this behavior might be changed
in the future.
<C-r> in insert mode has not yet been adapted and register handling
in general needs to be cleaned up further.
Fix #527
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Use pull instead of push based model for display code. Previously view.c
was calling into the ui frontend code, with the new scheme this switches
around: the necessary data is fetched by the ui as necessary.
The UI independent display code is moved out of view.c/ui-curses.c into
vis.c. The cell styles are now directly embedded into the Cell struct.
New UI styles are introduced for:
- status bar (focused / non-focused)
- info message
- window separator
- EOF symbol
You will have to update your color themes.
The terminal output code is further abstracted into a generic ui-terminal.c
part which keeps track of the whole in-memory cell matrix and #includes
ui-terminal-curses.c for the actual terminal output. This architecture
currently assumes that there are no overlapping windows. It will also
allow non-curses based terminal user interfaces.
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Can be NULL if no cursor is associated with the given selection (this is
currently never the case).
Avoids a loop through all cursors when clearing selections.
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At least one cursor (referred to as primary or main cursor) has always
to exist. In the sam command language implementation we might want to
dispose a cursor even if it is the primary one before later commands
will create different ones (e.g. `:x/pattern/ { i/>>>/ a/<<</ }`).
This commit introduces view_cursors_dispose_force. If called on
the last remaining cursor, its selection is cleared and it is marked for
destruction as soon as a new cursor is created. view_cursor_disposed
returns the cursor marked for deletion (if any) and clears the descruction
flag.
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Make cursor placement after scrolling (half) pages up/down less arbitrary.
Close #390, fix #391
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Make window status bar content configurable via Lua.
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This should fix inconsistency in the Lua API.
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Can be used to specify the number of bytes before the visible area
to consider for syntax highlighting.
Defaults to 32K for now, whereas before it was 16K.
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To create a cursor even if there already exists one at the same
position. Should only be used if all but one of the cursors will
later be removed.
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If there exist multiple cursors, [n/m] is added to the status bar.
Meaning the n-th cursor out of the existing m cursors is currently
the primary one.
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indicating whether cursor could be removed
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The number of columns i.e. maximal number of cursors located on the
same line can be obtained by view_cursors_column_count.
Column addressing is zero based, valid indexes are [0, max-1].
Assuming there is a cursor on every letter:
a
b c
d e f
g h
i
max column would be 3, and the following would iterate over the
cursors forming the second column [c, e, h]:
for (Cursor *c = view_cursors_column(view, 1); c; c = view_cursors_column_next(c, 1))
...
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The currently visible display port is always adjusted
in a way that the primary cursor is visible.
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That is from now on use vis:method instead of vis.method
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It returns the range covered by the selection of the primary cursor.
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Lua support can now be disabled at compile time using:
$ make CONFIG_LUA=0
This commit also adds an initial Lua API and provides a few
default hooks.
We now also require Lua >= 5.2 due to the uservalue constructs.
In principle the same functionality could be implemented using
function environments from Lua 5.1.
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The only used event handler was used to update the '< and '>
marks which is now taken care of by the leave handler of the
visual modes.
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They now belong to the cell holding the corresponding regular
(i.e. non-combining) character. This also means that at least
in theory a cell could hold arbitrary amounts of data, in
practice it is limited to 16 bytes.
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The view_draw function renders the text into the cells
array and resyncs the cursor position. The syntax
highlighting is applied in view_update, which also
instructs the ui to update.
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The lua based lexers are searched in the following order:
$VIS_PATH/lexers
$HOME/.vis/lexers
/usr/share/vis/lexers
followed by the standard lua package.path
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Also text objects in visual mode should now work better.
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This commits introduces the following keybindings, in normal mode:
CTRL-N select word the cursor is currently over, switch to visual mode
CTRL-P remove least recently added cursor
ESC if a selection is active, clear it.
Otherwise dispose all but the primary cursor.
In visual mode:
CTRL-N create new cursor and select next word matching current selection
CTRL-X clear (skip) current selection, but select next matching word
CTRL-P remove least recently added cursor
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