Fix formatting with --range-start / --range-end (#5632)

This change avoids collapsing an already-formatted range into a single
overlong line when --range-start / --range-end are provided.

Fixes: #4923

src/main/ast-to-doc.js

@@ -78,7 +78,7 @@ function printAstToDoc(ast, options, alignmentSize = 0) {
     // Add a hardline to make the indents take effect
     // It should be removed in index.js format()
     doc = addAlignmentToDoc(
-      docUtils.removeLines(concat([hardline, doc])),
+      concat([hardline, doc]),
       alignmentSize,
       options.tabWidth
     );

tests/range/__snapshots__/jsfmt.spec.js.snap

@@ -88,6 +88,34 @@ function ugly ( {a=1,     b     =   2     }      ) {
 ================================================================================
 `;
 
+exports[`large-dict.js 1`] = `
+====================================options=====================================
+parsers: ["flow", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+function ugly() {
+  const dictWithSeveralEntries = {
+    key:          "value",
+    anotherKey:   "another value",
+    firstNumber:  1,
+    secondNumber: 2
+  };
+}
+
+=====================================output=====================================
+function ugly() {
+  const dictWithSeveralEntries = {
+    key: "value",
+    anotherKey: "another value",
+    firstNumber: 1,
+    secondNumber: 2
+  };
+}
+
+================================================================================
+`;
+
 exports[`module-export1.js 1`] = `
 ====================================options=====================================
 parsers: ["flow", "typescript"]

tests/range/large-dict.js

@@ -0,0 +1,8 @@
+function ugly() {
+  const dictWithSeveralEntries = {
+    key:          "value",
+<<<PRETTIER_RANGE_START>>>    anotherKey:   "another value",
+    firstNumber:  1,
+    secondNumber: 2<<<PRETTIER_RANGE_END>>>
+  };
+}