-h, --help
Print help and exit.
-v, --version
Print version and exit.
-x, --xdisplay=hostname:number.screen_number
Sets the xdisplay to use.
-b, --bordersize=FLOAT
Sets the selection rectangle's thickness.
-p, --padding=FLOAT
Sets the padding size for the selection, this can be negative.
-t, --tolerance=FLOAT
How far in pixels the mouse can move after clicking, and still be detected as a normal click
instead of a click-and-drag. Setting this to 0 will disable window selections. Alternatively
setting it to 9999999 would force a window selection.
-c, --color=FLOAT,FLOAT,FLOAT,FLOAT
Sets the selection rectangle's color. Supports RGB or RGBA input. Depending on the system's window
manager/OpenGL support, the opacity may be ignored.
-r, --shader=STRING
This sets the vertex shader, and fragment shader combo to use when drawing the final framebuffer
to the screen. This obviously only works when OpenGL is enabled. The shaders are loaded from
~/.config/slop. See https://github.com/naelstrof/slop for more information on how to create your
own shaders.
-f, --format=STRING
Sets the output format for slop. Format specifiers are %x (x offset), %y (y offset), %w (width),
%h (height), %i (window id), %c (1 if cancelled, 0 otherwise), %g (geometry - `%wx%h+%x+%y'), and
%% for a literal percent sign.
-n, --nodecorations=INT
Sets the level of aggressiveness when trying to remove window decorations. `0' is off, `1' will
try lightly to remove decorations, and `2' will recursively descend into the root tree until it
gets the deepest available visible child under the mouse. Defaults to `0'. Supplying slop with
just `-n` is equivalent to supplying `-n1`.
-l, --highlight
Instead of outlining a selection, slop will highlight it instead. This is particularly useful if
the color is set to an opacity lower than 1.
-D, --nodrag
Allows you to click twice to indicate a selection, rather than click-dragging.
-q, --quiet
Disable any unnecessary cerr output. Any warnings simply won't print.
-k, --nokeyboard
Disables the ability to cancel selections with the keyboard.
-o, --noopengl
Disables graphics acceleration. Might be useful if you get rendering bugs.