Build with Go 1.23 (#110)

Also fix deprecated linters and associated errors.

.github/workflows/go.yml

@@ -16,15 +16,15 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "1.23"
 
       - name: Checkout
         uses: actions/checkout@v4
 
       - name: Lint
         uses: golangci/golangci-lint-action@v6.1.0
         with:
-          version: v1.53
+          version: v1.60
 
       - name: Test
         run: go test -v ./...

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "1.23"
 
       - name: Checkout
         uses: actions/checkout@v4

.golangci.yml

@@ -4,23 +4,49 @@ run:
 linters:
   disable-all: true
   enable:
-    - deadcode
     - errcheck
     - gofmt
     - goimports
-    - golint
     - govet
     - ineffassign
+    - misspell
+    - revive
     - typecheck
     - unconvert
-    - varcheck
+    - unused
 
 issues:
   exclude-use-default: false
   exclude-rules:
     - path: cmd/patch2pr/
       text: "should have( a package)? comment"
+    - path: internal/
+      text: "should have( a package)? comment"
 
-linter-settings:
+linters-settings:
+  errcheck:
+    exclude-functions:
+      - fmt.Fprintln(os.Stdout)
   goimports:
     local-prefixes: github.com/bluekeyes/patch2pr
+  revive:
+    rules:
+      # enable all rules from golint
+      - name: context-keys-type
+      - name: time-naming
+      - name: var-declaration
+      - name: unexported-return
+      - name: errorf
+      - name: blank-imports
+      - name: context-as-argument
+      - name: dot-imports
+      - name: error-return
+      - name: error-strings
+      - name: error-naming
+      - name: exported
+      - name: increment-decrement
+      - name: var-naming
+      - name: package-comments
+      - name: range
+      - name: receiver-naming
+      - name: indent-error-flow

applier.go

@@ -1,3 +1,4 @@
+// Package patch2pr converts Git patches in to GitHub pull requests.
 package patch2pr
 
 import (

cmd/patch2pr/main.go

@@ -16,9 +16,10 @@ import (
 	"time"
 
 	"github.com/bluekeyes/go-gitdiff/gitdiff"
+	"github.com/google/go-github/v63/github"
+
 	"github.com/bluekeyes/patch2pr"
 	"github.com/bluekeyes/patch2pr/internal"
-	"github.com/google/go-github/v63/github"
 )
 
 var (