Remove depwarn for X11 color names with spaces

This also removes `color(::AbstractString)` and depreates `parse(::Type, ::Colorant)`.

docs/namedcolorcharts.jl

@@ -78,7 +78,7 @@ function ColorChartSVG(colorcategory)
             write(io, """<tspan x="$cx" y="4.2">$name</tspan>""")
         else
             m = match(r"^(dark|pale|light|lemon|medium|blanched|(?:.+(?=white|blue|purple|blush)))(.+)$", name)
-            if m != nothing
+            if m !== nothing
                 write(io, """<tspan x="$cx" y="2.3">$(m.captures[1])</tspan>""")
                 write(io, """<tspan x="$cx" y="4.5">$(m.captures[2])</tspan>""")
             else

docs/src/constructionandconversion.md

@@ -111,15 +111,6 @@ julia> parse(RGB{N0f16}, "indianred")
 RGB{N0f16}(0.80392,0.36078,0.36078)
 ```
 
-You can also pass a color (`Colorant` value) to the second argument of the
-[`parse`](@ref) function, but in this case, `parse` does not apply any
-conversion on the color.
-
-```jldoctest example
-julia> parse(RGB{N0f8}, HSL{Float64}(120, 1, 0.5)) # use `convert` instead
-HSL{Float64}(120.0,1.0,0.5)
-```
-
 
 You can convert colors to hexadecimal strings using the [`hex`](@ref) function.
 Note that the conversion result does not have the prefix `"#"`.

src/names_data.jl

@@ -142,8 +142,8 @@ const color_names = Dict(
     "firebrick3"           => (205,  38,  38),
     "firebrick4"           => (139,  26,  26),
     "floralwhite"          => (255, 250, 240),
-    "fuchsia"              => (255,   0, 255),
     "forestgreen"          => ( 34, 139,  34),
+    "fuchsia"              => (255,   0, 255),
     "gainsboro"            => (220, 220, 220),
     "ghostwhite"           => (248, 248, 255),
     "gold"                 => (255, 215,   0),

src/parse.jl

@@ -136,15 +136,9 @@ function _parse_colorant(desc::String)
 
     ldesc == "transparent" && return RGBA{N0f8}(0,0,0,0)
 
-    wo_spaces = replace(ldesc, r"(?<=[^ ]{3}) (?=[^ ]{3})" => "")
+    wo_spaces = replace(ldesc, r"(?<=[^bfptuv ][^p ][adeghk-rtwy]) (?=[^efinq ][aeh-mo-rtuy][^kw \d][a-y]{0,7}\b)" => "")
     c = get(color_names, wo_spaces, nothing)
-    if c !== nothing
-        camel = replace(titlecase(ldesc), " " => "")
-        Base.depwarn(
-            """
-            The X11 color names with spaces are not recommended because they are not allowed in the SVG/CSS.
-            Use "$camel" or "$wo_spaces" instead.
-            """, :parse)
+    if c !== nothing && sizeof(wo_spaces) > 6
         return RGB{N0f8}(n0f8(c[1]), n0f8(c[2]), n0f8(c[3]))
     end
 
@@ -211,7 +205,13 @@ function Base.parse(::Type{C}, desc::AbstractString) where {C<:Colorant}
 end
 
 Base.parse(::Type{C}, desc::Symbol) where {C<:Colorant} = parse(C, string(desc))
-Base.parse(::Type{C}, c::Colorant) where {C<:Colorant} = c
+
+@noinline function Base.parse(::Type{C}, c::Colorant) where {C<:Colorant}
+    Base.depwarn("""
+        `parse(::Type, ::Coloarant)` is deprecated.
+          Do not call `parse` if the object does not need to be parsed.""", :parse)
+    c
+end
 
 """
     @colorant_str(ex)

test/parse.jl

@@ -6,16 +6,14 @@ using FixedPointNumbers
     # Color parsing
     # named-color
     redN0f8 = parse(Colorant, "red")
-    @test colorant"red" == redN0f8
-    @test isa(redN0f8, RGB{N0f8})
-    @test redN0f8 == RGB(1,0,0)
+    @test colorant"red" === redN0f8
+    @test redN0f8 === RGB{N0f8}(1,0,0)
     @test parse(RGB{Float64}, "red") === RGB{Float64}(1,0,0)
     @test isa(parse(HSV, "blue"), HSV)
     @test_throws ErrorException parse(Colorant, "p ink")
     @test parse(Colorant, "transparent") === RGBA{N0f8}(0,0,0,0)
     @test parse(Colorant, "\nSeaGreen ") === RGB{N0f8}(r8(0x2E),r8(0x8B),r8(0x57))
-    seagreen = @test_logs (:warn, r"Use \"SeaGreen\" or \"seagreen\"") parse(Colorant, "sea GREEN")
-    @test seagreen == colorant"seagreen"
+    @test parse(Colorant, "sea GREEN") === colorant"seagreen"
 
     # hex-color
     @test parse(Colorant, "#D0FF58") === RGB(r8(0xD0),r8(0xFF),r8(0x58))
@@ -50,6 +48,6 @@ using FixedPointNumbers
     @test parse(Colorant, "hsl( 120 50% 7% / 1)") === HSLA{Float32}(120,.5,.07, 1) # CSS Color Module Level 4
 
     @test parse(Colorant, :red) === colorant"red"
-    @test parse(Colorant, colorant"red") === colorant"red"
+    @test_deprecated parse(Colorant, colorant"red") === colorant"red"
 
 end