dependency_helpers: include required & use public_send

- Use .required? instead of .tags.empty?
- use .public_send
- modify .reject_ignores to be .select_includes
  - checks ignores first now
- Don't use runtime deps with --missing in `brew deps` command

Library/Homebrew/cmd/deps.rb

@@ -90,7 +90,8 @@ module Homebrew
                                 !args.include_build? &&
                                 !args.include_test? &&
                                 !args.include_optional? &&
-                                !args.skip_recommended?
+                                !args.skip_recommended? &&
+                                !args.missing?
 
     if args.tree? || args.graph?
       dependents = if args.named.present?
@@ -197,8 +198,8 @@ module Homebrew
       deps ||= recursive_includes(Dependency, dependency, includes, ignores)
       reqs   = recursive_includes(Requirement, dependency, includes, ignores)
     else
-      deps ||= reject_ignores(dependency.deps, ignores, includes)
-      reqs   = reject_ignores(dependency.requirements, ignores, includes)
+      deps ||= select_includes(dependency.deps, ignores, includes)
+      reqs   = select_includes(dependency.requirements, ignores, includes)
     end
 
     deps + reqs.to_a
@@ -269,8 +270,8 @@ module Homebrew
   def self.dependables(formula, args:)
     includes, ignores = args_includes_ignores(args)
     deps = @use_runtime_dependencies ? formula.runtime_dependencies : formula.deps
-    deps = reject_ignores(deps, ignores, includes)
-    reqs = reject_ignores(formula.requirements, ignores, includes) if args.include_requirements?
+    deps = select_includes(deps, ignores, includes)
+    reqs = select_includes(formula.requirements, ignores, includes) if args.include_requirements?
     reqs ||= []
     reqs + deps
   end

Library/Homebrew/cmd/uses.rb

@@ -129,7 +129,7 @@ module Homebrew
       deps = if recursive
         recursive_includes(Dependency, d, includes, ignores)
       else
-        reject_ignores(d.deps, ignores, includes)
+        select_includes(d.deps, ignores, includes)
       end
 
       used_formulae.all? do |ff|

Library/Homebrew/dependencies_helpers.rb

@@ -8,7 +8,7 @@ require "cask_dependent"
 # @api private
 module DependenciesHelpers
   def args_includes_ignores(args)
-    includes = [:recommended?] # included by default
+    includes = [:required?, :recommended?] # included by default
     includes << :build? if args.include_build?
     includes << :test? if args.include_test?
     includes << :optional? if args.include_optional?
@@ -26,14 +26,12 @@ module DependenciesHelpers
     cache_key = "recursive_includes_#{includes}_#{ignores}"
 
     klass.expand(root_dependent, cache_key: cache_key) do |dependent, dep|
-      klass.prune if ignores.any? { |ignore| dep.send(ignore) }
-
-      # NOTE: Untagged dependencies are runtime dependencies and are included by default.
-      klass.prune if !dep.tags.empty? && includes.none? do |include|
+      klass.prune if ignores.any? { |ignore| dep.public_send(ignore) }
+      klass.prune if includes.none? do |include|
         # Ignore indirect test dependencies
         next if include == :test? && dependent != root_dependent
 
-        dep.send(include)
+        dep.public_send(include)
       end
 
       # If a tap isn't installed, we can't find the dependencies of one of
@@ -42,11 +40,11 @@ module DependenciesHelpers
     end
   end
 
-  def reject_ignores(dependables, ignores, includes)
-    dependables.reject do |dep|
-      next false unless ignores.any? { |ignore| dep.send(ignore) }
+  def select_includes(dependables, ignores, includes)
+    dependables.select do |dep|
+      next false if ignores.any? { |ignore| dep.public_send(ignore) }
 
-      includes.none? { |include| dep.send(include) }
+      includes.any? { |include| dep.public_send(include) }
     end
   end