From b67806ae9a99e5a3c449c60457933b47d14ba66c Mon Sep 17 00:00:00 2001
From: Billy Biggs <bbiggs@google.com>
Date: Sun, 15 Jun 2025 11:40:39 -0700
Subject: Support completion of checkpoint names in /resume (#1063)

---
 packages/cli/src/ui/hooks/slashCommandProcessor.ts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'packages/cli/src/ui/hooks/slashCommandProcessor.ts')

diff --git a/packages/cli/src/ui/hooks/slashCommandProcessor.ts b/packages/cli/src/ui/hooks/slashCommandProcessor.ts
index a4b13d0a..dfefc562 100644
--- a/packages/cli/src/ui/hooks/slashCommandProcessor.ts
+++ b/packages/cli/src/ui/hooks/slashCommandProcessor.ts
@@ -44,6 +44,7 @@ export interface SlashCommand {
   name: string;
   altName?: string;
   description?: string;
+  completion?: () => Promise<string[]>;
   action: (
     mainCommand: string,
     subCommand?: string,
@@ -643,6 +644,25 @@ Add any other context about the problem here.
         name: 'resume',
         description:
           'resume from conversation checkpoint. Usage: /resume [tag]',
+        completion: async () => {
+          const geminiDir = config?.getGeminiDir();
+          if (!geminiDir) {
+            return [];
+          }
+          try {
+            const files = await fs.readdir(geminiDir);
+            return files
+              .filter(
+                (file) =>
+                  file.startsWith('checkpoint-') && file.endsWith('.json'),
+              )
+              .map((file) =>
+                file.replace('checkpoint-', '').replace('.json', ''),
+              );
+          } catch (_err) {
+            return [];
+          }
+        },
         action: async (_mainCommand, subCommand, _args) => {
           const tag = (subCommand || '').trim();
           const logger = new Logger(config?.getSessionId() || '');
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