Correctly format CJK sentences with Variation Selector. (#8511)

* Correctly format CJK sentences with IVS.

* Changelog pr-8511

* Changelog title should contain the title

* GitHub user name can contain `-`.

https://github.com/prettier/prettier/pull/8511#issuecomment-640231668

changelog_unreleased/markdown/pr-8511.md

@@ -0,0 +1,13 @@
+#### Correctly format CJK sentences with Variation Selector ([#8511](https://github.com/prettier/prettier/pull/8511) by [@ne-sachirou](https://github.com/ne-sachirou))
+
+<!-- prettier-ignore -->
+```markdown
+<!-- Input -->
+麻󠄁羽󠄀‼️
+
+<!-- Prettier stable -->
+麻 󠄁 羽 󠄀 ‼️
+
+<!-- Prettier master -->
+麻󠄁羽󠄀‼️
+```

cspell.json

@@ -387,7 +387,7 @@
     ],
     "ignoreRegExpList": [
         "<!-- prettier-ignore -->\\n(`{3,})\\w*\\n[\\s\\S]+?\\1",
-        "\\[(\\*{2})?@\\w+?\\1\\]",
+        "\\[(\\*{2})?@[-\\w]+?\\1\\]",
         "\\[`\\w+`\\]",
         "ve{2,}r{2,}y",
         "ve+r+y+long\\w*",

src/language-markdown/constants.evaluate.js

@@ -4,7 +4,7 @@ const cjkRegex = require("cjk-regex");
 const regexpUtil = require("regexp-util");
 const unicodeRegex = require("unicode-regex");
 
-const cjkPattern = cjkRegex()
+const cjkPattern = `(?:${cjkRegex()
   .union(
     unicodeRegex({
       Script_Extensions: ["Han", "Katakana", "Hiragana", "Hangul", "Bopomofo"],
@@ -18,7 +18,9 @@ const cjkPattern = cjkRegex()
       ],
     })
   )
-  .toString();
+  .toString()})(?:${unicodeRegex({
+  Block: ["Variation_Selectors", "Variation_Selectors_Supplement"],
+}).toString()})?`;
 
 const kPattern = unicodeRegex({ Script: ["Hangul"] })
   .union(unicodeRegex({ Script_Extensions: ["Hangul"] }))

tests/markdown/paragraph/__snapshots__/jsfmt.spec.js.snap

@@ -23,6 +23,8 @@ This ia an english paragraph with a CJK quote “中文“.
 该网站在国外无法访问，故以下演示无效
 :::
 
+IVS 麻󠄁羽󠄀‼️
+
 =====================================output=====================================
 這是一段很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長
 很長的段落
@@ -49,6 +51,8 @@ This ia an english paragraph with a CJK quote “中文“.
 
 ::: warning 注意该网站在国外无法访问，故以下演示无效 :::
 
+IVS 麻󠄁羽󠄀‼️
+
 ================================================================================
 `;
 
@@ -75,6 +79,8 @@ This ia an english paragraph with a CJK quote “中文“.
 该网站在国外无法访问，故以下演示无效
 :::
 
+IVS 麻󠄁羽󠄀‼️
+
 =====================================output=====================================
 這是一段很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長的段落
 
@@ -90,6 +96,8 @@ This ia an english paragraph with a CJK quote “中文“.
 
 ::: warning 注意该网站在国外无法访问，故以下演示无效 :::
 
+IVS 麻󠄁羽󠄀‼️
+
 ================================================================================
 `;
 
@@ -116,6 +124,8 @@ This ia an english paragraph with a CJK quote “中文“.
 该网站在国外无法访问，故以下演示无效
 :::
 
+IVS 麻󠄁羽󠄀‼️
+
 =====================================output=====================================
 這是一段很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長很長的段落
 
@@ -133,6 +143,8 @@ This ia an english paragraph with a CJK quote “中文“.
 该网站在国外无法访问，故以下演示无效
 :::
 
+IVS 麻󠄁羽󠄀‼️
+
 ================================================================================
 `;
 

tests/markdown/paragraph/cjk.md

@@ -13,3 +13,5 @@ This ia an english paragraph with a CJK quote “中文“.
 ::: warning 注意
 该网站在国外无法访问，故以下演示无效
 :::
+
+IVS 麻󠄁羽󠄀‼️