Fix Void deprecations

REQUIRE

@@ -1,3 +1,3 @@
 julia 0.6
-Compat 0.39
+Compat 0.41.0
 DocStringExtensions 0.2

src/Builder.jl

@@ -127,7 +127,7 @@ function Selectors.runner(::Type{SetupBuildDirectory}, doc::Documents.Document)
 
     # Finally we populate the .next and .prev fields of the navnodes that point
     # to actual pages.
-    local prev::Union{Documents.NavNode, Void} = nothing
+    local prev::Union{Documents.NavNode, Nothing} = nothing
     for navnode in doc.internal.navlist
         navnode.prev = prev
         if prev !== nothing

src/Documents.jl

@@ -147,17 +147,17 @@ mutable struct NavNode
     `nothing` if the `NavNode` is a non-page node of the navigation tree, otherwise
     the string should be a valid key in `doc.internal.pages`
     """
-    page           :: Union{String, Void}
+    page           :: Union{String, Nothing}
     """
     If not `nothing`, specifies the text that should be displayed in navigation
     links etc. instead of the automatically determined text.
     """
-    title_override :: Union{String, Void}
-    parent         :: Union{NavNode, Void}
+    title_override :: Union{String, Nothing}
+    parent         :: Union{NavNode, Nothing}
     children       :: Vector{NavNode}
     visible        :: Bool
-    prev           :: Union{NavNode, Void}
-    next           :: Union{NavNode, Void}
+    prev           :: Union{NavNode, Nothing}
+    next           :: Union{NavNode, Nothing}
 end
 NavNode(page, title_override, parent) = NavNode(page, title_override, parent, [], true, nothing, nothing)
 
@@ -198,7 +198,7 @@ struct User
     version :: String # version string used in the version selector by default
     html_prettyurls :: Bool # Use pretty URLs in the HTML build?
     html_disable_git :: Bool # Don't call git when exporting HTML
-    html_edit_branch :: Union{String, Void} # Change how the "Edit on GitHub" links are handled
+    html_edit_branch :: Union{String, Nothing} # Change how the "Edit on GitHub" links are handled
 end
 
 """
@@ -253,7 +253,7 @@ function Document(;
         version :: AbstractString    = "",
         html_prettyurls  :: Bool     = false,
         html_disable_git :: Bool     = false,
-        html_edit_branch :: Union{String, Void} = "master",
+        html_edit_branch :: Union{String, Nothing} = "master",
         others...
     )
     Utilities.check_kwargs(others)

src/Utilities/MDFlatten.jl

@@ -11,6 +11,8 @@ export mdflatten
 
 import ..Utilities
 
+using Compat
+
 import Base.Markdown:
     MD, BlockQuote, Bold, Code, Header, HorizontalRule,
     Image, Italic, LaTeX, LineBreak, Link, List, Paragraph, Table,
@@ -80,7 +82,7 @@ mdflatten(io, c::Code, parent) = print(io, c.code)
 mdflatten(io, expr::Union{Symbol,Expr}, parent) = print(io, expr)
 
 mdflatten(io, f::Footnote, parent) = footnote(io, f.id, f.text, f)
-footnote(io, id, text::Void, parent) = print(io, "[$id]")
+footnote(io, id, text::Nothing, parent) = print(io, "[$id]")
 function footnote(io, id, text, parent)
     print(io, "[$id]: ")
     mdflatten(io, text, parent)

src/Utilities/Utilities.jl

@@ -331,7 +331,7 @@ filterdocs(other, modules::Set{Module}) = other
 Does the given docstring represent actual documentation or a no docs error message?
 """
 nodocs(x)      = contains(stringmime("text/plain", x), "No documentation found.")
-nodocs(::Void) = false
+nodocs(::Nothing) = false
 
 header_level(::Markdown.Header{N}) where {N} = N
 
@@ -564,7 +564,7 @@ where
   * `result` is the value returned from calling function `f`.
   * `success` signals whether `f` has thrown an error, in which case `result` stores the
     `Exception` that was raised.
-  * `backtrace` a `Vector{Ptr{Void}}` produced by `catch_backtrace()` if an error is thrown.
+  * `backtrace` a `Vector{Ptr{Cvoid}}` produced by `catch_backtrace()` if an error is thrown.
   * `output` is the combined output of `STDOUT` and `STDERR` during execution of `f`.
 
 """
@@ -586,7 +586,7 @@ function withoutput(f)
     # Success signals whether the function `f` did or did not throw an exception.
     result, success, backtrace =
         try
-            f(), true, Vector{Ptr{Void}}()
+            f(), true, Vector{Ptr{Cvoid}}()
         catch err
             err, false, catch_backtrace()
         finally

src/Writers/HTMLWriter.jl

@@ -882,7 +882,7 @@ mdconvert(t::Markdown.Table, parent; kwargs...) = Tag(:table)(
 mdconvert(expr::Union{Expr,Symbol}, parent; kwargs...) = string(expr)
 
 mdconvert(f::Markdown.Footnote, parent; kwargs...) = footnote(f.id, f.text, parent; kwargs...)
-footnote(id, text::Void, parent; kwargs...) = Tag(:a)[:href => "#footnote-$(id)"]("[$id]")
+footnote(id, text::Nothing, parent; kwargs...) = Tag(:a)[:href => "#footnote-$(id)"]("[$id]")
 function footnote(id, text, parent; kwargs...)
     Tag(:div)[".footnote#footnote-$(id)"](
         Tag(:a)[:href => "#footnote-$(id)"](Tag(:strong)("[$id]")),

test/navnode.jl

@@ -7,7 +7,7 @@ import Documenter: Documents, Builder
 import Documenter.Documents: NavNode
 
 mutable struct FakeDocumentInternal
-    pages   :: Dict{String, Void}
+    pages   :: Dict{String, Nothing}
     navlist :: Vector{NavNode}
     FakeDocumentInternal() = new(Dict(), [])
 end