Improve patch signature heuristic

web/src/lib/util.ts

@@ -96,7 +96,7 @@ export function binaryFileDummyDetails(fromFile: string, toFile: string, status:
     return makeTextDetails(fromFile, toFile, status, fakeContent);
 }
 
-const fileRegex = /diff --git a\/(\S+) b\/(\S+)\r?\n(?:.+\r?\n)*?(?=-- *\r?\n|diff --git|$)/g;
+const fileRegex = /diff --git a\/(\S+) b\/(\S+)\r?\n(?:.+\r?\n)*?(?=-- \r?\n|diff --git|$)/g;
 
 function parseHeader(
     patch: string,

web/src/test/patches/patch-with-multiple-minus-diff-with-signature.patch

@@ -0,0 +1,25 @@
+From f6ec5d6950dc0e09a72148022353bfd9c7d63cba Mon Sep 17 00:00:00 2001
+From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
+Date: Sun, 29 Jun 2025 19:04:34 -0400
+Subject: [PATCH] test
+
+---
+ test | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/test b/test
+index 3636ae5..3aa784f 100644
+--- a/test
++++ b/test
+@@ -5,6 +5,6 @@ e
+
+ 345
+ 123
+--
++
+ e
+ abc
+\ No newline at end of file
+-- 
+2.43.0.windows.1
+

web/src/test/util.test.ts

@@ -8,6 +8,11 @@ test("Yield 2 patches from a patch file with signature", () => {
     expect(splitMultiFilePatch(patch).length).toBe(2);
 });
 
+test("Yield 1 patches from a patch file with signature and double -- in the diff", () => {
+    const patch = loadPatch("patch-with-multiple-minus-diff-with-signature.patch");
+    expect(splitMultiFilePatch(patch).length).toBe(1);
+});
+
 test("Yield 2 patches from a patch file without signature", () => {
     const patch = loadPatch("patch-without-signature.patch");
     expect(splitMultiFilePatch(patch).length).toBe(2);