Fix incorrect wrap in sentence with linkReference (#16546)

changelog_unreleased/markdown/16546.md

@@ -0,0 +1,16 @@
+#### Fix incorrect wrap in sentence with linkReference (#16546 by @seiyab)
+
+<!-- prettier-ignore -->
+```md
+<!-- Input (--prose-wrap=always) -->
+This folder has [VHS] tape files to create gifs for the [Widget Showcase]. To run them, install VHS from main (the theme and screenshot commands are not yet released).
+
+<!-- Prettier stable -->
+This folder has [VHS] tape files to create gifs for the [Widget Showcase]. To run
+them, install VHS from main (the theme and screenshot commands are not yet released).
+
+<!-- Prettier main -->
+This folder has [VHS] tape files to create gifs for the [Widget Showcase]. To
+run them, install VHS from main (the theme and screenshot commands are not yet
+released).
+```

src/language-markdown/printer-markdown.js

@@ -48,7 +48,12 @@ function genericPrint(path, options, print) {
   const { node } = path;
 
   if (shouldRemainTheSameContent(path)) {
-    /** @type {Doc} */
+    /*
+     * We assume parts always meet following conditions:
+     * - parts.length is odd
+     * - odd (0-indexed) elements are line-like doc
+     */
+    /** @type {Doc[]} */
     const parts = [""];
     const textsNodes = splitText(
       options.originalText.slice(
@@ -66,7 +71,8 @@ function genericPrint(path, options, print) {
         parts.push([parts.pop(), doc]);
         continue;
       }
-      parts.push(doc);
+      // In this path, doc is line. To meet the condition, we need additional element "".
+      parts.push(doc, "");
     }
     return fill(parts);
   }

tests/format/markdown/linkReference/__snapshots__/format.test.js.snap

@@ -349,3 +349,35 @@ proseWrap: "never"
 
 ================================================================================
 `;
+
+exports[`wrap.md - {"proseWrap":"always"} format 1`] = `
+====================================options=====================================
+parsers: ["markdown"]
+printWidth: 80
+proseWrap: "always"
+                                                                                | printWidth
+=====================================input======================================
+This folder has [VHS] tape files to create gifs for the [Widget Showcase]. To run them, install VHS from main (the theme and screenshot commands are not yet released).
+
+=====================================output=====================================
+This folder has [VHS] tape files to create gifs for the [Widget Showcase]. To
+run them, install VHS from main (the theme and screenshot commands are not yet
+released).
+
+================================================================================
+`;
+
+exports[`wrap.md - {"proseWrap":"never"} format 1`] = `
+====================================options=====================================
+parsers: ["markdown"]
+printWidth: 80
+proseWrap: "never"
+                                                                                | printWidth
+=====================================input======================================
+This folder has [VHS] tape files to create gifs for the [Widget Showcase]. To run them, install VHS from main (the theme and screenshot commands are not yet released).
+
+=====================================output=====================================
+This folder has [VHS] tape files to create gifs for the [Widget Showcase]. To run them, install VHS from main (the theme and screenshot commands are not yet released).
+
+================================================================================
+`;

tests/format/markdown/linkReference/wrap.md

@@ -0,0 +1 @@
+This folder has [VHS] tape files to create gifs for the [Widget Showcase]. To run them, install VHS from main (the theme and screenshot commands are not yet released).