Fix regression in atrepl

Docs attached to numbers weren't being found.

Finding docs for specific methods using the syntax

    help?> f(::Int)

wasn't being recognised due to changes in how `gen_call_with_extracted_types`
generated an error when it failed. (Previously the error was thrown
by the function, but is now returned as an `:(error("..."))` expression.)

Author: MichaelHatherly

base/docs/utils.jl

@@ -126,13 +126,14 @@ repl(ex::Expr) = isregex(ex) ? :(apropos($ex)) : _repl(ex)
 
 repl(str::AbstractString) = :(apropos($str))
 
-repl(other) = nothing
+repl(other) = :(@doc $(esc(other)))
 
 function _repl(x)
     docs = :(@doc $(esc(x)))
-    try
-        # Handles function call syntax where each argument is a symbol.
-        isexpr(x, :call) && (docs = Base.gen_call_with_extracted_types(doc, x))
+    if isexpr(x, :call)
+        # Handles function call syntax where each argument is an atom (symbol, number, etc.)
+        t = Base.gen_call_with_extracted_types(doc, x)
+        (isexpr(t, :call, 3) && t.args[1] == doc) && (docs = t)
     end
     if isfield(x)
         quote

test/docs.jl

@@ -411,6 +411,13 @@ f12593_2() = 1
 # test that macro documentation works
 @test (Docs.@repl @assert) !== nothing
 
+@test (Docs.@repl 0) !== nothing
+
+let t = @doc(DocsTest.t(::Int, ::Int))
+    @test docstrings_equal(Docs.@repl(DocsTest.t(0, 0)), t)
+    @test docstrings_equal(Docs.@repl(DocsTest.t(::Int, ::Int)), t)
+end
+
 # Issue #13467.
 @test (Docs.@repl @r_str) !== nothing