Use JuliaSyntaxHighlighting for nicer printing

Project.toml

@@ -5,8 +5,10 @@ version = "0.1.0"
 
 [deps]
 InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
+JuliaSyntaxHighlighting = "dc6e5ff7-fb65-4e79-a425-ec3bc9c03011"
 StyledStrings = "f489334b-da3d-4c2e-b8f0-e476e12c162b"
 
 [compat]
 InteractiveUtils = "1.11.0"
+JuliaSyntaxHighlighting = "1.11.0"
 StyledStrings = "1.11.0"

src/About.jl

@@ -2,6 +2,7 @@ module About
 
 using Base: AnnotatedString, AnnotatedIOBuffer
 using StyledStrings: @styled_str, Face, face!
+using JuliaSyntaxHighlighting: highlight
 using InteractiveUtils
 
 export about

src/functions.jl

@@ -2,7 +2,8 @@ function about(io::IO, fn::Function)
     source = Main.InteractiveUtils.which(parentmodule(fn), Symbol(fn))
     methodmodules = getproperty.(methods(fn).ms, :module)
     others = setdiff(methodmodules, [source])
-    print(io, Base.summary(fn), styled"\n Defined in {bright_red:$source}")
+    fn_name, fn_extra = split(Base.summary(fn), ' ', limit=2)
+    print(io, styled"{julia_funcall:$fn_name} $fn_extra\n Defined in {bright_red:$source}")
     if length(others) > 0
         print(io, styled"{shadow:({emphasis:$(sum(Ref(source) .=== methodmodules))})} extended in ")
         for (i, oth) in enumerate(others)
@@ -30,7 +31,8 @@ function about(io::IO, fn::Function, @nospecialize(sig::Type{<:Tuple}))
     about(io, fn); println(io)
     ms = methods(fn, sig)
     if isempty(ms)
-        print(io, styled" {error:!} No methods matched $fn($(join(collect(Tuple{Int64, Int64, Int64}.types), \", \")))")
+        fncall = highlight("$fn($(join(collect(sig.types), ", ")))")
+        println(io, styled" {error:!} No methods matched $fncall")
         return
     end
     println(io, styled" Matched {emphasis:$(length(ms))} method$(ifelse(length(ms) > 1, \"s\", \"\")):")

src/types.jl

@@ -83,7 +83,7 @@ function about(io::IO, type::Type)
 end
 
 supertypestr(type::Type) =
-    join(string.(supertypes(type)), styled" {red:<:} ")
+    join(string.(supertypes(type)), styled" {julia_comparator:<:} ")
 
 function memorylayout(io::IO, type::DataType)
     si = structinfo(type)

src/values.jl

@@ -13,7 +13,7 @@ function about(io::IO, value::T) where {T}
     if indirectbytes > directbytes
         print(io, styled" referencing {bold:$(join(humansize(indirectbytes)))}")
     end
-    print(io, styled" ({red:<:} ", supertypestr(supertype(T)), ")")
+    print(io, styled" ({julia_comparator:<:} ", supertypestr(supertype(T)), ")")
     println(io)
     memorylayout(io, value)
 end