Remove Go 1.21 polyfills

We can drop these now that the main module requires Go 1.21.
bracesdev · Nov 15, 2024 · 4844905 · 4844905
1 parent d96f0d1
commit 4844905
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -38,6 +38,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 - Update `go` directive in go.mod to 1.21.
+- End compatibility with Go 1.20 and earlier.
 
 ### Fixed
 - cmd/errtrace: Don't exit with a non-zero status when `-h` is used.

diff --git a/cmd/errtrace/slices_contains_go121.go b/cmd/errtrace/slices_contains_go121.go
diff --git a/cmd/errtrace/slices_contains_pre_go121.go b/cmd/errtrace/slices_contains_pre_go121.go
diff --git a/cmd/errtrace/toolexec.go b/cmd/errtrace/toolexec.go
@@ -309,7 +309,7 @@ func readBuildSHA() (_ string, ok bool) {
 
 // isStdLib checks if the current execution is for stdlib.
 func isStdLib(args []string) bool {
-	return slicesContains(args, "-std")
+	return slices.Contains(args, "-std")
 }
 
 func packageSelectorMatch(selector, importPath string) bool {

diff --git a/tree.go b/tree.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	"runtime"
+	"slices"
 	"strings"
 )
 
@@ -72,7 +73,7 @@ loop:
 		}
 	}
 
-	sliceReverse(current.Trace)
+	slices.Reverse(current.Trace)
 	return current
 }
 

diff --git a/tree_go121.go b/tree_go121.go
diff --git a/tree_pre_go121.go b/tree_pre_go121.go