bump ecmarkdown and format valueless attributes

Author: bakkot

package-lock.json

@@ -49,7 +49,7 @@
 		"command-line-args": "^5.2.0",
 		"command-line-usage": "^6.1.1",
 		"dedent-js": "^1.0.1",
-		"ecmarkdown": "^8.0.0",
+		"ecmarkdown": "^8.1.0",
 		"eslint-formatter-codeframe": "^7.32.1",
 		"fast-glob": "^3.2.7",
 		"grammarkdown": "^3.2.0",

package.json

@@ -43,7 +43,9 @@ async function printStep(
   output.firstLineIsPartial = false;
   output.appendText(item.name === 'ordered-list-item' ? '1. ' : '* ');
   if (item.attrs.length > 0) {
-    const joined = item.attrs.map(({ key, value }) => `${key}=${JSON.stringify(value)}`).join(', ');
+    const joined = item.attrs
+      .map(({ key, value }) => (value === '' ? key : `${key}=${JSON.stringify(value)}`))
+      .join(', ');
     output.appendText(`[${joined}] `);
   }
   const contents = await printFragments(source, item.contents, indent + 1);

src/formatter/ecmarkdown.ts

@@ -473,7 +473,7 @@ describe('algorithm formatting', () => {
       1.  Step.
       1. Another   step.
             1. A substep.
-            1. [ x =  "a",y="b"  ] A step with attributes.
+            1. [ x =  "a",y="b" ,c="",d ] A step with attributes.
             1. A step with _vars_, numbers like **10<sup>x</sup>**, records like {  [[A]]: 0  }, and fields like _o_.[[field]].
       </emu-alg>
       `,
@@ -482,7 +482,7 @@ describe('algorithm formatting', () => {
         1. Step.
         1. Another step.
           1. A substep.
-          1. [x="a", y="b"] A step with attributes.
+          1. [x="a", y="b", c, d] A step with attributes.
           1. A step with _vars_, numbers like **10<sup>x</sup>**, records like { [[A]]: 0 }, and fields like _o_.[[field]].
       </emu-alg>
       `