feat(Handlebars): block whitespace control

Author: alandefreitas

src/lib/Support/Handlebars.cpp

@@ -2431,7 +2431,14 @@ parseBlock(
     }
 
     // ==============================================================
-    // Apply close tag whitespace control
+    // Apply open tag whitespace control to block
+    // ==============================================================
+    if (tag.removeRWhitespace) {
+        fnBlock = trim_lspaces(fnBlock);
+    }
+
+    // ==============================================================
+    // Apply close tag whitespace control after block
     // ==============================================================
     if (closeTag.removeRWhitespace) {
         templateText = trim_lspaces(templateText);

src/test/lib/Support/Handlebars.cpp

@@ -1689,6 +1689,15 @@ partial_blocks()
                 "{{#>nested}}1{{#>nested}}2{{/nested}}3{{/nested}}") ==
                 "123");
     }
+
+    // should remove whitespace from nested partial blocks
+    {
+        hbs.registerPartial("nested", "{{> @partial-block }}");
+        BOOST_TEST(
+            hbs.render(
+                "{{#>nested~}} 1 {{~#>nested~}} 2 {{~/nested ~}} 3 {{~/nested}}") ==
+                "123");
+    }
 }
 
 void