From 1bdaccbd5f127146978195540388d51e146a069c Mon Sep 17 00:00:00 2001
From: Janni Turunen <janni@Jannis-MacBook-Air.local>
Date: Mon, 23 Feb 2026 21:17:19 +0200
Subject: [PATCH] feat(hashline): create file on hashline_read of non-existent
 path (#324)

---
 packages/opencode/src/tool/hashline_read.ts   | 34 +++++++++----------
 .../opencode/test/tool/hashline_read.test.ts  | 21 ++++++++----
 2 files changed, 30 insertions(+), 25 deletions(-)

diff --git a/packages/opencode/src/tool/hashline_read.ts b/packages/opencode/src/tool/hashline_read.ts
index beece02d25d..ed11654a6d8 100644
--- a/packages/opencode/src/tool/hashline_read.ts
+++ b/packages/opencode/src/tool/hashline_read.ts
@@ -1,5 +1,5 @@
 import z from "zod"
-import * as fs from "fs"
+import * as fs from "fs/promises"
 import * as path from "path"
 import { Tool } from "./tool"
 import { LSP } from "../lsp"
@@ -48,23 +48,21 @@ export const HashlineReadTool = Tool.define("hashline_read", {
     })
 
     if (!stat) {
-      const dir = path.dirname(filepath)
-      const base = path.basename(filepath)
-
-      const dirEntries = fs.readdirSync(dir)
-      const suggestions = dirEntries
-        .filter(
-          (entry) =>
-            entry.toLowerCase().includes(base.toLowerCase()) || base.toLowerCase().includes(entry.toLowerCase()),
-        )
-        .map((entry) => path.join(dir, entry))
-        .slice(0, 3)
-
-      if (suggestions.length > 0) {
-        throw new Error(`File not found: ${filepath}\n\nDid you mean one of these?\n${suggestions.join("\n")}`)
+      await fs.mkdir(path.dirname(filepath), { recursive: true })
+      await Bun.write(filepath, "")
+      
+      FileTime.read(ctx.sessionID, filepath)
+      FileTime.hashlineRead(ctx.sessionID, filepath)
+      
+      return {
+        title,
+        output: [`<path>${filepath}</path>`, `<type>file</type>`, "<content>"].join("\n") + "\n</content>\n\n(File created successfully - empty and ready for editing)",
+        metadata: {
+          preview: "",
+          truncated: false,
+          loaded: [],
+        },
       }
-
-      throw new Error(`File not found: ${filepath}`)
     }
 
     if (stat.isDirectory()) {
@@ -192,4 +190,4 @@ async function isBinaryFile(filepath: string, file: Bun.BunFile): Promise<boolea
     }
   }
   return nonPrintableCount / bytes.length > 0.3
-}
\ No newline at end of file
+}
diff --git a/packages/opencode/test/tool/hashline_read.test.ts b/packages/opencode/test/tool/hashline_read.test.ts
index 17ba3a62421..3234015157e 100644
--- a/packages/opencode/test/tool/hashline_read.test.ts
+++ b/packages/opencode/test/tool/hashline_read.test.ts
@@ -109,17 +109,24 @@ describe("tool.hashline_read binary file detection", () => {
 })
 
 describe("tool.hashline_read non-existent file", () => {
-  test("returns error for non-existent file", async () => {
+  test("creates non-existent file and returns successfully", async () => {
     await using tmp = await tmpdir({})
     await Instance.provide({
       directory: tmp.path,
       fn: async () => {
         const hashlineRead = await HashlineReadTool.init()
-        const error = await hashlineRead
-          .execute({ filePath: path.join(tmp.path, "nonexistent.txt") }, ctx)
-          .catch((e) => e)
-        expect(error).toBeInstanceOf(Error)
-        expect(error.message).toContain("File not found")
+        const filePath = path.join(tmp.path, "nonexistent.txt")
+        
+        expect(await Bun.file(filePath).exists()).toBe(false)
+        
+        const result = await hashlineRead.execute({ filePath }, ctx)
+        
+        expect(result).toBeDefined()
+        expect(await Bun.file(filePath).exists()).toBe(true)
+        expect(result.output).toContain(`<path>${filePath}</path>`)
+        expect(result.output).toContain("<type>file</type>")
+        expect(result.output).toContain("(File created successfully - empty and ready for editing)")
+        expect(result.metadata.preview).toBe("")
       },
     })
   })
@@ -265,4 +272,4 @@ describe("tool.hashline_read CJK byte counting", () => {
       },
     })
   })
-})
\ No newline at end of file
+})