8 bit workaround

Author: t-bltg

src/common.jl

@@ -537,26 +537,26 @@ function to_256_colors(color)
         r6, g6, b6 = map(c -> c < 48 ? 0 : (c < 114 ? 1 : trunc(Int, (c - 35) / 40)), rgb)
         16 + 36r6 + 6g6 + b6  # cube 6x6x6
     end
-    return UInt8(ansi)
+    UInt8(ansi)
 end
 
-ansi_color(col::StyledStrings.SimpleColor) = let c = col.value
+ansi_color(color::StyledStrings.SimpleColor)::ColorType = let c = color.value
     if COLORMODE[] ≡ COLORMODE_24BIT
         if c isa Symbol
-            c4 = get(StyledStrings.ANSI_4BIT_COLORS, c, nothing)
+            c4 = StyledStrings.ANSI_4BIT_COLORS[c]
             c8 = ansi_4bit_to_8bit(UInt8(c4))
             return USE_LUT[] ? LUT_8BIT[c8 + 1] : THRESHOLD + c8
         elseif c isa StyledStrings.RGBTuple
             return r32(c.r) + g32(c.g) + b32(c.b)
         end::ColorType
     else  # 0-255 ansi stored in a UInt32
         return THRESHOLD + if c isa Symbol
-            c4 = get(StyledStrings.ANSI_4BIT_COLORS, c, nothing)
+            c4 = StyledStrings.ANSI_4BIT_COLORS[c]
             ansi_4bit_to_8bit(UInt8(c4))
         elseif c isa StyledStrings.RGBTuple
             to_256_colors(c)
         end::UInt8
-    end::ColorType
+    end
 end
 
 complement(color::UserColorType)::ColorType = complement(ansi_color(color))

src/show.jl

@@ -145,6 +145,9 @@ end
 Base.show(io::IO, p::Plot) = _show(io, print, print_color, p)
 
 function _show(end_io::IO, print_nocol, print_color, p::Plot)
+    _have_truecolor = Base.have_truecolor
+    Base.have_truecolor = colormode() == 24
+
     buf = Base.AnnotatedIOBuffer()  # buffering, for performance
     io_color = get(end_io, :color, false)
     io = IOContext(buf, :color => io_color, :displaysize => displaysize(end_io))
@@ -387,6 +390,8 @@ function _show(end_io::IO, print_nocol, print_color, p::Plot)
     # delayed print (buffering)
     print(end_io, read(seekstart(buf), Base.AnnotatedString))
 
+    Base.have_truecolor = _have_truecolor
+
     # return the approximate image size
     (
         h_ttl + 1 + nr + 1 + h_lbl,  # +1 for borders