Show dot expressions without parentheses (JuliaLang#31074)

halleysfifthinc · Feb 16, 2019 · a44b421 · a44b421
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commit a44b421
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/base/show.jl b/base/show.jl
@@ -1121,7 +1121,7 @@ function show_unquoted(io::IO, ex::Expr, indent::Int, prec::Int)
  item = args[1]
  # field
  field = unquoted(args[2])
- parens = !is_quoted(item) && !(item isa Symbol && isidentifier(item))
+ parens = !is_quoted(item) && !(item isa Symbol && isidentifier(item)) && !Meta.isexpr(item, :(.))
  parens && print(io, '(')
  show_unquoted(io, item, indent)
  parens && print(io, ')')

diff --git a/test/show.jl b/test/show.jl
@@ -1462,3 +1462,6 @@ end
 # issue #30927
 Z = Array{Float64}(undef,0,0)
 @test eval(Meta.parse(repr(Z))) == Z
+
+# issue #31065, do not print parentheses for nested dot expressions
+@test sprint(Base.show_unquoted, :(foo.x.x)) == "foo.x.x"