Block Marking

Each window may define one block, this is a region of the buffer displayed in the window which is rendered in the opposite colours to normal (i.e. the same as the normal cursor, when the cursor is in a block it's drawn in the inverse of the block). Blocks are primarily used for marking areas of a buffer which will subsequently be manipulated.

Normally the area of the buffer contained by a block is delimited by two positions; the start and end of the block (these will track changes made to the buffer and adjust themselves, like marks do). It is also possible to mark rectangular blocks; these are also delimited by two positions, but they define the two opposite corners of the rectangular block.

Function: blockp

Returns t if a block is marked in the current window.

Function: mark-block start-pos end-pos

Define the beginning and end markers of the block to display in the current window.

Command: block-kill

Unmark the block displayed in the current window.

Command: mark-word count &optional pos

Mark count words from pos (or the cursor pos) in the current window.

Command: mark-whole-buffer

Mark the whole of the current buffer.

Function: block-start

Returns the position of the beginning of the block marked in the current window. If no block is defined returns nil.

Function: block-end

Returns the position of the end of the block, or nil if no block is defined in the current window.

Command: block-toggle

Toggles between marking the beginning, marking the end and totally unmarking the block in the current window.

Function: rect-blocks-p &optional window

Returns t if the block marked in the window is drawn as a rectangle.

Function: set-rect-blocks window status

Defines whether or not the block drawn in window is drawn as a rectangle or not. If status is nil it isn't.

Command: toggle-rect-blocks

Toggles between marking normal and rectangular blocks in the current window.

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