fix(markdown): preserve inline math style (prettier#5220)

Meesayen · Oct 10, 2018 · bb5a116 · bb5a116
1 parent b5fd382
commit bb5a116
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Showing 2 changed files with 11 additions and 4 deletions.
diff --git a/src/language-markdown/printer-markdown.js b/src/language-markdown/printer-markdown.js
@@ -409,8 +409,15 @@ function genericPrint(path, options, print) {
           : "",
         "$$"
       ]);
-    case "inlineMath":
-      return concat(["$", node.value, "$"]);
+    case "inlineMath": {
+      // $$math$$ can be block math in some variants
+      // see https://github.com/Rokt33r/remark-math#double-dollars-in-inline
+      const style =
+        options.originalText[node.position.start.offset + 1] === "$"
+          ? "$$"
+          : "$";
+      return concat([style, node.value, style]);
+    }
 
     case "tableRow": // handled in "table"
     case "listItem": // handled in "list"

diff --git a/tests/markdown_math/__snapshots__/jsfmt.spec.js.snap b/tests/markdown_math/__snapshots__/jsfmt.spec.js.snap
@@ -145,11 +145,11 @@ $$
 
 ---
 
-$\\\\alpha$
+$$\\\\alpha$$
 
 ---
 
-$\\alpha$
+$$\\alpha$$
 
 $$
 \\alpha\\beta