diff --git a/src/Meta.ts b/src/Meta.ts
index 61be6dc4..6728eb3f 100644
--- a/src/Meta.ts
+++ b/src/Meta.ts
@@ -17,7 +17,7 @@ export default class Meta extends Builder {
         node
           .getAttribute('effects')!
           .split(',')
-          .map(c => c.trim()),
+          .map(e => e.trim()),
         node
       );
       for (const effect of effects) {
@@ -40,6 +40,7 @@ export default class Meta extends Builder {
       const classNames = node
         .getAttribute('effects')!
         .split(',')
+        .map(e => e.trim())
         .map(e => `e-${e}`)
         .join(' ');
       const span = spec.doc.createElement('span');
diff --git a/src/Spec.ts b/src/Spec.ts
index 95315b90..c11256d0 100644
--- a/src/Spec.ts
+++ b/src/Spec.ts
@@ -1456,14 +1456,14 @@ ${this.opts.multipage ? `<li><span>Navigate to/from multipage</span><code>m</cod
       this.doc.body.insertBefore(h1, this.doc.body.firstChild);
     }
 
-    // version string, ala 6th Edition July 2016 or Draft 10 / September 26, 2015
+    // version string, e.g. "6th Edition July 2016" or "Draft 10 / September 26, 2015"
     let versionText = '';
     let omitShortname = false;
     if (version) {
       versionText += version + ' / ';
     } else if (status === 'proposal' && stage) {
       versionText += 'Stage ' + stage + ' Draft / ';
-    } else if (shortname && status === 'draft') {
+    } else if (status === 'draft' && shortname) {
       versionText += 'Draft ' + shortname + ' / ';
       omitShortname = true;
     } else {
@@ -2005,7 +2005,7 @@ async function walk(walker: TreeWalker, context: Context) {
       throw new Error('oldids found on unsupported element: ' + context.node.nodeName);
     }
     oldids
-      .split(/,/g)
+      .split(',')
       .map(s => s.trim())
       .forEach(oid => {
         const s = spec.doc.createElement('span');
diff --git a/src/Xref.ts b/src/Xref.ts
index 936e60d9..64902074 100644
--- a/src/Xref.ts
+++ b/src/Xref.ts
@@ -46,13 +46,19 @@ export default class Xref extends Builder {
       node.parentElement.children[0] === node
     ) {
       if (node.parentElement.hasAttribute('effects')) {
-        const addEffects = node.parentElement.getAttribute('effects')!.split(',');
+        const addEffects = node.parentElement
+          .getAttribute('effects')!
+          .split(',')
+          .map(e => e.trim());
         if (addEffects.length !== 0) {
           this.addEffects = validateEffects(spec, addEffects, node.parentElement);
         }
       }
       if (node.parentElement.hasAttribute('suppress-effects')) {
-        const suppressEffects = node.parentElement.getAttribute('suppress-effects')!.split(',');
+        const suppressEffects = node.parentElement
+          .getAttribute('suppress-effects')!
+          .split(',')
+          .map(e => e.trim());
         if (suppressEffects.length !== 0) {
           this.suppressEffects = validateEffects(spec, suppressEffects, node.parentElement);
         }
diff --git a/src/cli.ts b/src/cli.ts
index 8d02b300..d7099cd5 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -156,9 +156,11 @@ const build = debounce(async function build() {
       warnings.push(err);
     };
 
+    // Respect a reproducible build timestamp.
+    // https://reproducible-builds.org/specs/source-date-epoch/
     if (process.env.SOURCE_DATE_EPOCH) {
       const sde = process.env.SOURCE_DATE_EPOCH.trim();
-      if (!/^[0-9]+/.test(sde)) {
+      if (!/^[0-9]+$/.test(sde)) {
         fail(`SOURCE_DATE_EPOCH value ${sde} is not valid`);
       }
       const ts = +sde;