Support 0-argument lambdas

.ruby-version

@@ -1 +1 @@
-3.2.1
+3.2.2

CHANGELOG.md

@@ -0,0 +1,3 @@
+## Unreleased
+
+- `SGML#render` can now render lambdas with zero or one arguments. Previously, it could only render lambdas with one argument or procs with any number of arguments.

lib/phlex/sgml.rb

@@ -221,7 +221,11 @@ def render(renderable, &block)
 			when Enumerable
 				renderable.each { |r| render(r, &block) }
 			when Proc
-				yield_content(&renderable)
+				if renderable.arity == 0
+					yield_content_with_no_args(&renderable)
+				else
+					yield_content(&renderable)
+				end
 			else
 				raise ArgumentError, "You can't render a #{renderable}."
 			end

test/phlex/view/renderable/render.rb

@@ -55,14 +55,38 @@ def template(&block)
 				end
 			end
 
-			with "proc" do
+			with "0-argument lambda" do
 				view do
 					define_method :template do
-						render proc { h1 { "Hi" } }
+						render -> { h1 { "Hi" } }
 					end
 				end
 
-				it "renders the other view" do
+				it "renders the lambda" do
+					expect(output).to be == "<h1>Hi</h1>"
+				end
+			end
+
+			with "1-argument lambda" do
+				view do
+					define_method :template do
+						render -> (_view) { h1 { "Hi" } }
+					end
+				end
+
+				it "renders the lambda" do
+					expect(output).to be == "<h1>Hi</h1>"
+				end
+			end
+
+			with "multi-argument proc" do
+				view do
+					define_method :template do
+						render proc { |_a, _b, _c| h1 { "Hi" } }
+					end
+				end
+
+				it "renders the lambda" do
 					expect(output).to be == "<h1>Hi</h1>"
 				end
 			end