From acb0f4d807553684f3627202d4fd603059555c0e Mon Sep 17 00:00:00 2001
From: Mario Zechner <badlogicgames@gmail.com>
Date: Sat, 14 Mar 2026 04:12:38 +0100
Subject: [PATCH] fix(tui): preserve ./ prefix in tab completion, closes #2087

---
 packages/tui/src/autocomplete.ts       |  4 +++
 packages/tui/test/autocomplete.test.ts | 46 ++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/packages/tui/src/autocomplete.ts b/packages/tui/src/autocomplete.ts
index 7a7f55b5..3fb1b670 100644
--- a/packages/tui/src/autocomplete.ts
+++ b/packages/tui/src/autocomplete.ts
@@ -575,6 +575,10 @@ export class CombinedAutocompleteProvider implements AutocompleteProvider {
 						}
 					} else {
 						relativePath = join(dirname(displayPrefix), name);
+						// path.join normalizes away ./ prefix, preserve it
+						if (displayPrefix.startsWith("./") && !relativePath.startsWith("./")) {
+							relativePath = `./${relativePath}`;
+						}
 					}
 				} else {
 					// For standalone entries, preserve ~/ if original prefix was ~/
diff --git a/packages/tui/test/autocomplete.test.ts b/packages/tui/test/autocomplete.test.ts
index 6f06b89a..9693b975 100644
--- a/packages/tui/test/autocomplete.test.ts
+++ b/packages/tui/test/autocomplete.test.ts
@@ -331,6 +331,52 @@ describe("CombinedAutocompleteProvider", () => {
 		});
 	});
 
+	describe("dot-slash path completion", () => {
+		let baseDir = "";
+
+		beforeEach(() => {
+			baseDir = mkdtempSync(join(tmpdir(), "pi-autocomplete-"));
+		});
+
+		afterEach(() => {
+			rmSync(baseDir, { recursive: true, force: true });
+		});
+
+		test("preserves ./ prefix when completing paths", () => {
+			setupFolder(baseDir, {
+				files: {
+					"update.sh": "#!/bin/bash",
+					"utils.ts": "export {};",
+				},
+			});
+
+			const provider = new CombinedAutocompleteProvider([], baseDir);
+			const line = "./up";
+			const result = provider.getForceFileSuggestions([line], 0, line.length);
+
+			assert.notEqual(result, null, "Should return suggestions for ./ path");
+			const values = result?.items.map((item) => item.value);
+			assert.ok(values?.includes("./update.sh"), `Expected ./update.sh in ${JSON.stringify(values)}`);
+		});
+
+		test("preserves ./ prefix for directory completions", () => {
+			setupFolder(baseDir, {
+				dirs: ["src"],
+				files: {
+					"src/index.ts": "export {};",
+				},
+			});
+
+			const provider = new CombinedAutocompleteProvider([], baseDir);
+			const line = "./sr";
+			const result = provider.getForceFileSuggestions([line], 0, line.length);
+
+			assert.notEqual(result, null, "Should return suggestions for ./ directory path");
+			const values = result?.items.map((item) => item.value);
+			assert.ok(values?.includes("./src/"), `Expected ./src/ in ${JSON.stringify(values)}`);
+		});
+	});
+
 	describe("quoted path completion", () => {
 		let baseDir = "";