fix chaining recursive issue (#20)

Author: Dean Karn

.github/workflows/go.yml

@@ -8,7 +8,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.18.x]
+        go-version: [1.18.x, 1.21.0]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -37,9 +37,9 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.18.x
+          go-version: 1.21.x
       - uses: actions/checkout@v3
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.46.2
+          version: latest

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [5.3.1] - 2023-08-16
+### Fixed
+- Wrap recursively wrapping the Chain itself instead of only adding another Link.
+
 ## [5.3.0] - 2023-04-14
 ### Fixed
 - Added Error interface for Link.
@@ -33,7 +37,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Updated deps.
 
 
-[Unreleased]: https://github.com/go-playground/errors/compare/v5.3.0...HEAD
+[Unreleased]: https://github.com/go-playground/errors/compare/v5.3.1...HEAD
+[5.3.1]: https://github.com/go-playground/errors/compare/v5.3.0...v5.3.1
 [5.3.0]: https://github.com/go-playground/errors/compare/v5.2.3...v5.3.0
 [5.2.3]: https://github.com/go-playground/errors/compare/v5.2.2...v5.2.3
 [5.2.2]: https://github.com/go-playground/errors/compare/v5.2.1...v5.2.2

README.md

@@ -1,6 +1,6 @@
 Package errors
 ============
-![Project status](https://img.shields.io/badge/version-5.3.0-green.svg)
+![Project status](https://img.shields.io/badge/version-5.3.1-green.svg)
 [![Build Status](https://travis-ci.org/go-playground/errors.svg?branch=master)](https://travis-ci.org/go-playground/errors)
 [![Go Report Card](https://goreportcard.com/badge/github.com/go-playground/errors)](https://goreportcard.com/report/github.com/go-playground/errors)
 [![GoDoc](https://godoc.org/github.com/go-playground/errors?status.svg)](https://pkg.go.dev/github.com/go-playground/errors/v5)

chain.go

@@ -107,13 +107,11 @@ func (l *Link) formatError(b []byte) []byte {
 
 	if l.Prefix != "" {
 		b = append(b, l.Prefix...)
-	}
 
-	if _, ok := l.Err.(Chain); !ok {
-		if l.Prefix != "" {
+		if l.Err != nil {
 			b = append(b, ": "...)
+			b = append(b, l.Err.Error()...)
 		}
-		b = append(b, l.Err.Error()...)
 	}
 
 	for _, tag := range l.Tags {

errors.go

@@ -72,7 +72,7 @@ func wrap(err error, prefix string, skipFrames int) (c Chain) {
 	}
 	var ok bool
 	if c, ok = err.(Chain); ok {
-		c = append(c, newLink(err, prefix, skipFrames))
+		c = append(c, newLink(nil, prefix, skipFrames))
 	} else {
 		c = Chain{newLink(err, prefix, skipFrames)}
 		for _, h := range helpers {