From 4c35582a9ca76ec225d2e29489062bf8800b27af Mon Sep 17 00:00:00 2001
From: cheeslide <175485195+cheeslide@users.noreply.github.com>
Date: Sun, 23 Feb 2025 10:12:32 +0800
Subject: [PATCH 1/2] fix: start with . (issue #9)

./foo and foo are the same
---
 src/lib.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 34233b3..9be4f61 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -57,6 +57,14 @@ where
     } else {
         let mut ita = path.components();
         let mut itb = base.components();
+
+        // ./foo and foo are the same
+        if let Some(Component::CurDir) = ita.clone().next() {
+            ita.next();
+        }
+        if let Some(Component::CurDir) = itb.clone().next() {
+            itb.next();
+        }
         let mut comps: Vec<Component> = vec![];
         loop {
             match (ita.next(), itb.next()) {
@@ -198,6 +206,9 @@ mod tests {
         assert_diff_paths("./foo", "./foo", Some(""));
         assert_diff_paths("/foo", "/foo", Some(""));
         assert_diff_paths("foo", "foo", Some(""));
+        assert_diff_paths("./foo", "foo", Some(""));
+        assert_diff_paths("foo", "./foo", Some(""));
+        assert_diff_paths("foo/foo", "./foo/foo", Some(""));
 
         assert_diff_paths("../foo/bar/baz", "../foo/bar/baz", Some("".into()));
         assert_diff_paths("foo/bar/baz", "foo/bar/baz", Some(""));
@@ -221,6 +232,8 @@ mod tests {
         assert_diff_paths("../foo", "../bar", Some("../foo"));
         assert_diff_paths("../foo", "../foo/bar/baz", Some("../.."));
         assert_diff_paths("../foo/bar/baz", "../foo", Some("bar/baz"));
+        assert_diff_paths("../foo", "bar", Some("../../foo"));
+        assert_diff_paths("foo", "../bar", None);
 
         assert_diff_paths("foo/bar/baz", "foo", Some("bar/baz"));
         assert_diff_paths("foo/bar/baz", "foo/bar", Some("baz"));
@@ -242,6 +255,10 @@ mod tests {
         assert_diff_paths(".", "foo", Some("../."));
         assert_diff_paths("foo", ".", Some("foo"));
         assert_diff_paths("/foo", "/.", Some("foo"));
+        
+        assert_diff_paths("./foo/bar/baz", "foo", Some("bar/baz"));
+        assert_diff_paths("foo/bar/baz", "./foo", Some("bar/baz"));
+        assert_diff_paths("./foo/bar/baz", "./foo", Some("bar/baz"));
     }
 
     fn assert_diff_paths(path: &str, base: &str, expected: Option<&str>) {

From f0be99642517c7570169f8d512ed341ec45fd712 Mon Sep 17 00:00:00 2001
From: cheeslide <175485195+cheeslide@users.noreply.github.com>
Date: Tue, 25 Feb 2025 22:13:28 +0800
Subject: [PATCH 2/2] Update utf8_paths

---
 src/lib.rs | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 9be4f61..2328fe2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -57,6 +57,7 @@ where
     } else {
         let mut ita = path.components();
         let mut itb = base.components();
+        let mut comps: Vec<Component> = vec![];
 
         // ./foo and foo are the same
         if let Some(Component::CurDir) = ita.clone().next() {
@@ -65,7 +66,7 @@ where
         if let Some(Component::CurDir) = itb.clone().next() {
             itb.next();
         }
-        let mut comps: Vec<Component> = vec![];
+
         loop {
             match (ita.next(), itb.next()) {
                 (None, None) => break,
@@ -144,6 +145,15 @@ mod utf8_paths {
             let mut ita = path.components();
             let mut itb = base.components();
             let mut comps: Vec<Utf8Component> = vec![];
+
+            // ./foo and foo are the same
+            if let Some(Utf8Component::CurDir) = ita.clone().next() {
+                ita.next();
+            }
+            if let Some(Utf8Component::CurDir) = itb.clone().next() {
+                itb.next();
+            }
+
             loop {
                 match (ita.next(), itb.next()) {
                     (None, None) => break,
@@ -255,7 +265,7 @@ mod tests {
         assert_diff_paths(".", "foo", Some("../."));
         assert_diff_paths("foo", ".", Some("foo"));
         assert_diff_paths("/foo", "/.", Some("foo"));
-        
+
         assert_diff_paths("./foo/bar/baz", "foo", Some("bar/baz"));
         assert_diff_paths("foo/bar/baz", "./foo", Some("bar/baz"));
         assert_diff_paths("./foo/bar/baz", "./foo", Some("bar/baz"));