Update MD037/no-space-in-emphasis to ignore emphasis on code fences and not report violations for scenarios that span an empty code fence (fixes #381).

demo/markdownlint-browser.js

@@ -3412,11 +3412,19 @@ module.exports = {
         resetRunTracking();
         forEachLine(lineMetadata(), function (line, lineIndex, inCode, onFence, inTable, inItem, onBreak, inMath) {
             var onItemStart = (inItem === 1);
-            if (inCode || inTable || onBreak || onItemStart || isBlankLine(line)) {
+            if (inCode ||
+                onFence ||
+                inTable ||
+                onBreak ||
+                onItemStart ||
+                isBlankLine(line)) {
                 // Emphasis resets when leaving a block
                 resetRunTracking();
             }
-            if (inCode || onBreak || inMath) {
+            if (inCode ||
+                onFence ||
+                onBreak ||
+                inMath) {
                 // Emphasis has no meaning here
                 return;
             }

lib/md037.js

@@ -78,11 +78,23 @@ module.exports = {
       lineMetadata(),
       (line, lineIndex, inCode, onFence, inTable, inItem, onBreak, inMath) => {
         const onItemStart = (inItem === 1);
-        if (inCode || inTable || onBreak || onItemStart || isBlankLine(line)) {
+        if (
+          inCode ||
+          onFence ||
+          inTable ||
+          onBreak ||
+          onItemStart ||
+          isBlankLine(line)
+        ) {
           // Emphasis resets when leaving a block
           resetRunTracking();
         }
-        if (inCode || onBreak || inMath) {
+        if (
+          inCode ||
+          onFence ||
+          onBreak ||
+          inMath
+        ) {
           // Emphasis has no meaning here
           return;
         }

test/spaces-inside-emphasis-markers-multiple-lines.md

@@ -120,3 +120,10 @@ multi-line emphasis
 scenario * that
 should * not trigger
 violations * either`.
+
+<!-- markdownlint-disable MD031 -->
+*text
+```text
+```
+text *
+<!-- markdownlint-restore -->

test/spaces_inside_emphasis_markers.md

@@ -341,3 +341,7 @@ text [reference*link] star * star text
 | x** y | x** y |
 | x _ y | x _ y |
 | x__ y | x__ y |
+
+```yaml /* autogenerated */
+# YAML...
+```