true

,
false

,,
false

all,
true

x,
false

screen and x
false

(min-width:1px)
true

(min-width)
true

all and (min-width)
true

(width)
true

(width),x
true

x,(width)
true

(width,x
false

(width,all
false

(min-width:,
false

(min-width:,all
false

(min-width:2px,)
false

(min-width:-0)
true

(min-width:-1px)
false

all and(width)
false

alland (width)
false

all and (min-width:1p\x)
true

not foo,all
true

not foo
false

not
false

only
false

only all
true

not all,all
true

foo
false

all and (         min-width                             :  1px       )
true

all foo
false

(foo)
false

all and (width)and (height)
true

not (max-width:0)
false

only (width)
false

not only (max-width:0)
false

not all and (max-width:0)
true

all and (min-grid)
false