This module provides capabilities for moving the cursor on the terminal.
Get the default size of the terminal. For resizeable terminals (e.g.,
xterm), these may not correspond to the actual dimensions.
This flag specifies that the cursor wraps automatically from the last column of one line to the first column of the next.
This flag specifies that a backspace at column 0 wraps the cursor to the last column of the previous line.
This flag specifies that the terminal does not perform
autoRightMargin-style wrapping when the character which would cause the wraparound is a control character. This is also known as the "newline glitch" or "magic wrap".
For example, in an 80-column terminal with this behavior, the following will print single-spaced instead of double-spaced:
replicateM_ 5 $ putStr $ replicate 80 'x' ++ "\n"
cr capability, which moves the cursor to the first column of the current line.
nel capability, which moves the cursor to the first column of the next line. It behaves like a carriage return followed by a line feed.
nel is not defined, this may be built out of other capabilities.
The following functions for cursor movement will combine the more primitive capabilities. For example,
moveDown may use either
cursorDown1 depending on the parameter and which of
cud1 are defined.
These capabilities correspond directly to
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