From 2d1617a32729daf480c399fc7d8941cbf85c6d7e Mon Sep 17 00:00:00 2001
From: s-beats <s.sakae@gemcook.com>
Date: Sun, 7 Nov 2021 12:09:48 +0900
Subject: [PATCH 1/2] chore: change module name, change package name

---
 errs.go         |  2 +-
 errs_test.go    |  4 ++--
 example_test.go | 12 ++++++------
 go.mod          |  2 +-
 4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/errs.go b/errs.go
index a251c65..f86c3e2 100644
--- a/errs.go
+++ b/errs.go
@@ -1,4 +1,4 @@
-package errs
+package merr
 
 import (
 	"bytes"
diff --git a/errs_test.go b/errs_test.go
index cb3059f..dc8c4f8 100644
--- a/errs_test.go
+++ b/errs_test.go
@@ -1,4 +1,4 @@
-package errs
+package merr
 
 import (
 	"bytes"
@@ -191,7 +191,7 @@ func Test_errs_PrettyPrint(t *testing.T) {
 					&somethingError{},
 				},
 			},
-			"Errors[\n  &errs.somethingError{},\n]",
+			"Errors[\n  &merr.somethingError{},\n]",
 		},
 		{
 			"print nil",
diff --git a/example_test.go b/example_test.go
index 6afc491..751fbfa 100644
--- a/example_test.go
+++ b/example_test.go
@@ -1,10 +1,10 @@
-package errs_test
+package merr_test
 
 import (
 	"fmt"
 	"os"
 
-	"github.com/gemcook/errs"
+	"github.com/gemcook/merr"
 )
 
 type structError struct {
@@ -28,7 +28,7 @@ func (*ptrError) Error() string {
 }
 
 func Example() {
-	err := errs.New()
+	err := merr.New()
 
 	// error interface
 	err.Append(fmt.Errorf("%w", fmt.Errorf("wrap error")))
@@ -49,7 +49,7 @@ func Example() {
 	}
 	err.Append(ptrErr)
 
-	errs.SetOutput(os.Stdout)
+	merr.SetOutput(os.Stdout)
 	err.PrettyPrint()
 
 	// output:
@@ -60,12 +60,12 @@ func Example() {
 	//       s: "wrap error",
 	//     },
 	//   },
-	//   errs_test.structError{
+	//   merr_test.structError{
 	//     i:   1,
 	//     str: "error",
 	//     b:   true,
 	//   },
-	//   &errs_test.ptrError{
+	//   &merr_test.ptrError{
 	//     i:   1,
 	//     str: "error",
 	//     b:   true,
diff --git a/go.mod b/go.mod
index 1b4cba8..6ce7ccb 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/gemcook/errs
+module github.com/gemcook/merr
 
 go 1.17
 

From 0182fb9291a8abbc6ff73bf8e70e1db9a53ff8bc Mon Sep 17 00:00:00 2001
From: s-beats <s.sakae@gemcook.com>
Date: Sun, 7 Nov 2021 15:24:35 +0900
Subject: [PATCH 2/2] feat: add README

feat: add README

feat: add README

feat: add README

feat: add README

feat: add README

feat: add README
---
 README.md    | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++
 errs.go      |   2 +-
 errs_test.go |   4 +-
 3 files changed, 115 insertions(+), 3 deletions(-)
 create mode 100644 README.md

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2c50ab2
--- /dev/null
+++ b/README.md
@@ -0,0 +1,112 @@
+# merr
+
+[![Analysis](https://github.com/gemcook/merr/actions/workflows/analysis.yml/badge.svg)](https://github.com/gemcook/merr/actions/workflows/analysis.yml) ![GitHub go.mod Go version](https://img.shields.io/github/go-mod/go-version/gemcook/merr)
+
+`merr` is a package that binds multiple errors.
+
+## Features
+
+`merr` has pretty print, which outputs the bound errors in a well-formatted and easy-to-understand format.
+It is also possible to change the output destination if necessary, which is very useful for debugging.
+
+## Installation
+
+```sh
+go get -u github.com/gemcook/merr
+```
+
+## Usage
+
+```go
+import "github.com/gemcook/merr"
+```
+
+### Appends error
+
+Appends error to list of errors.
+If there is no error list, it creates a new one.
+
+```go
+multiError := merr.New()
+
+for i := 0; i < 10; i++ {
+    if err := something(); err != nil {
+        multiError.Append(err)
+    }
+}
+```
+
+### Print list of error
+
+Prints the object of the list of errors, separated by `,\n`.
+
+```go
+multiError := merr.New()
+
+for i := 0; i < 10; i++ {
+    // something() returns &errors.errorString{s: "something error"}
+    if err := something(); err != nil {
+        multiError.Append(err)
+    }
+}
+
+fmt.Println(multiError.Error())
+```
+
+```
+"something error",
+"something error",
+  .
+  .
+  .
+"something error"
+```
+
+### Pretty print
+
+Prints a list of errors in a well-formatted, easy-to-understand format.
+
+```go
+multiError := merr.New()
+
+for i := 0; i < 10; i++ {
+    // something() returns &errors.errorString{s: "something error"}
+    if err := something(); err != nil {
+        multiError.Append(err)
+    }
+}
+
+multiError.PrettyPrint()
+```
+
+```
+Errors[
+  &errors.errorString{
+    s: "something error",
+  },
+  &errors.errorString{
+    s: "something error",
+  },
+  &errors.errorString{
+    s: "something error",
+  },
+  .
+  .
+  .
+  &errors.errorString{
+    s: "something error",
+  },
+]
+```
+
+The default output destination is the **standard output**.
+You can also change the output destination.
+
+```go
+buf := bytes.NewBuffer(nil)
+merr.SetOutput(buf)
+```
+
+## License
+
+MIT License
diff --git a/errs.go b/errs.go
index f86c3e2..c02f6e7 100644
--- a/errs.go
+++ b/errs.go
@@ -27,7 +27,7 @@ var (
 
 var formatter = func(e *errs) string {
 	var result string
-	suffix := ",\n"
+	suffix := "\n"
 	for i, err := range e.Errors {
 		if len(e.Errors)-1 == i {
 			suffix = ""
diff --git a/errs_test.go b/errs_test.go
index dc8c4f8..2f466fd 100644
--- a/errs_test.go
+++ b/errs_test.go
@@ -35,7 +35,7 @@ func Test_errs_Error(t *testing.T) {
 					fmt.Errorf("%s", "error2"),
 				},
 			},
-			"error1,\nerror2",
+			"error1\nerror2",
 		},
 		{
 			"check/error/wrapped",
@@ -46,7 +46,7 @@ func Test_errs_Error(t *testing.T) {
 					fmt.Errorf("%w", &somethingError{}),
 				},
 			},
-			"something error,\nsomething error",
+			"something error\nsomething error",
 		},
 	}
 	for _, tt := range tests {