keep only the most recent release on readme.txt

.releaserc.yml

@@ -9,7 +9,7 @@ plugins:
   - - "@semantic-release/release-notes-generator"
     - preset: simple-preset
   - - "@semantic-release/exec"
-    - prepareCmd: "replace-in-file \"== Changelog ==\" \"== Changelog ==\n\n${nextRelease.notes}\" readme.txt"
+    - prepareCmd: "export nextReleaseNotes=\"${nextRelease.notes}\" && node bin/update_changelog.js"
   - - "@semantic-release/exec"
     - prepareCmd: grunt version::${nextRelease.version} && grunt wp_readme_to_markdown
   - - "semantic-release-slack-bot"

bin/update_changelog.js

@@ -0,0 +1,21 @@
+const replace = require('replace-in-file');
+
+async function updateChangelog() {
+    const options = {
+        files: 'readme.txt',
+        from: /== Changelog ==[\s\S]*?\[See changelog for all versions\]/,
+        to: (match) => {
+            return `== Changelog ==\n\n${process.env.nextReleaseNotes}\n\n[See changelog for all versions]`;
+        },
+        encoding: 'utf8',
+    };
+
+    try {
+        const results = await replace(options);
+        console.log('Replacement results:', results);
+    } catch (error) {
+        console.error('Error occurred:', error);
+    }
+}
+
+updateChangelog();