diff --git a/bash_completions.go b/bash_completions.go
index 10c78847..8a531518 100644
--- a/bash_completions.go
+++ b/bash_completions.go
@@ -85,7 +85,7 @@ __%[1]s_handle_go_custom_completion()
     local out requestComp lastParam lastChar comp directive args
 
     # Prepare the command to request completions for the program.
-    # Calling ${words[0]} instead of directly %[1]s allows to handle aliases
+    # Calling ${words[0]} instead of directly %[1]s allows handling aliases
     args=("${words[@]:1}")
     # Disable ActiveHelp which is not supported for bash completion v1
     requestComp="%[8]s=0 ${words[0]} %[2]s ${args[*]}"
diff --git a/bash_completionsV2.go b/bash_completionsV2.go
index 19b09560..1cce5c32 100644
--- a/bash_completionsV2.go
+++ b/bash_completionsV2.go
@@ -57,7 +57,7 @@ __%[1]s_get_completion_results() {
     local requestComp lastParam lastChar args
 
     # Prepare the command to request completions for the program.
-    # Calling ${words[0]} instead of directly %[1]s allows to handle aliases
+    # Calling ${words[0]} instead of directly %[1]s allows handling aliases
     args=("${words[@]:1}")
     requestComp="${words[0]} %[2]s ${args[*]}"
 
diff --git a/cobra.go b/cobra.go
index b07b44a0..f23f5092 100644
--- a/cobra.go
+++ b/cobra.go
@@ -48,7 +48,7 @@ const (
 	defaultCaseInsensitive = false
 )
 
-// EnablePrefixMatching allows to set automatic prefix matching. Automatic prefix matching can be a dangerous thing
+// EnablePrefixMatching allows setting automatic prefix matching. Automatic prefix matching can be a dangerous thing
 // to automatically enable in CLI tools.
 // Set this to true to enable it.
 var EnablePrefixMatching = defaultPrefixMatching
diff --git a/fish_completions_test.go b/fish_completions_test.go
index 10d97d85..ce2a531d 100644
--- a/fish_completions_test.go
+++ b/fish_completions_test.go
@@ -16,9 +16,10 @@ package cobra
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
-	"log"
 	"os"
+	"path/filepath"
 	"testing"
 )
 
@@ -98,12 +99,12 @@ func TestFishCompletionNoActiveHelp(t *testing.T) {
 }
 
 func TestGenFishCompletionFile(t *testing.T) {
-	err := os.Mkdir("./tmp", 0755)
+	tmpFile, err := os.CreateTemp("", "cobra-test")
 	if err != nil {
-		log.Fatal(err.Error())
+		t.Fatal(err.Error())
 	}
 
-	defer os.RemoveAll("./tmp")
+	defer os.Remove(tmpFile.Name())
 
 	rootCmd := &Command{Use: "root", Args: NoArgs, Run: emptyRun}
 	child := &Command{
@@ -113,18 +114,18 @@ func TestGenFishCompletionFile(t *testing.T) {
 	}
 	rootCmd.AddCommand(child)
 
-	assertNoErr(t, rootCmd.GenFishCompletionFile("./tmp/test", false))
+	assertNoErr(t, rootCmd.GenFishCompletionFile(tmpFile.Name(), false))
 }
 
 func TestFailGenFishCompletionFile(t *testing.T) {
-	err := os.Mkdir("./tmp", 0755)
+	tmpDir, err := os.MkdirTemp("", "cobra-test")
 	if err != nil {
-		log.Fatal(err.Error())
+		t.Fatal(err.Error())
 	}
 
-	defer os.RemoveAll("./tmp")
+	defer os.RemoveAll(tmpDir)
 
-	f, _ := os.OpenFile("./tmp/test", os.O_CREATE, 0400)
+	f, _ := os.OpenFile(filepath.Join(tmpDir, "test"), os.O_CREATE, 0400)
 	defer f.Close()
 
 	rootCmd := &Command{Use: "root", Args: NoArgs, Run: emptyRun}
@@ -135,18 +136,8 @@ func TestFailGenFishCompletionFile(t *testing.T) {
 	}
 	rootCmd.AddCommand(child)
 
-	got := rootCmd.GenFishCompletionFile("./tmp/test", false)
-	if got == nil {
-		t.Error("should raise permission denied error")
-	}
-
-	if os.Getenv("MSYSTEM") == "MINGW64" {
-		if got.Error() != "open ./tmp/test: Access is denied." {
-			t.Errorf("got: %s, want: %s", got.Error(), "open ./tmp/test: Access is denied.")
-		}
-	} else {
-		if got.Error() != "open ./tmp/test: permission denied" {
-			t.Errorf("got: %s, want: %s", got.Error(), "open ./tmp/test: permission denied")
-		}
+	got := rootCmd.GenFishCompletionFile(f.Name(), false)
+	if !errors.Is(got, os.ErrPermission) {
+		t.Errorf("got: %s, want: %s", got.Error(), os.ErrPermission.Error())
 	}
 }
diff --git a/powershell_completions.go b/powershell_completions.go
index 8585d845..6929dbaa 100644
--- a/powershell_completions.go
+++ b/powershell_completions.go
@@ -47,7 +47,7 @@ filter __%[1]s_escapeStringWithSpecialChars {
 `+"    $_ -replace '\\s|#|@|\\$|;|,|''|\\{|\\}|\\(|\\)|\"|`|\\||<|>|&','`$&'"+`
 }
 
-[scriptblock]$__%[2]sCompleterBlock = {
+[scriptblock]${__%[2]sCompleterBlock} = {
     param(
             $WordToComplete,
             $CommandAst,
@@ -122,7 +122,7 @@ filter __%[1]s_escapeStringWithSpecialChars {
 
     __%[1]s_debug "Calling $RequestComp"
     # First disable ActiveHelp which is not supported for Powershell
-    $env:%[10]s=0
+    ${env:%[10]s}=0
 
     #call the command store the output in $out and redirect stderr and stdout to null
     # $Out is an array contains each line per element
diff --git a/powershell_completions_test.go b/powershell_completions_test.go
index b4092134..603b50c9 100644
--- a/powershell_completions_test.go
+++ b/powershell_completions_test.go
@@ -29,5 +29,5 @@ func TestPwshCompletionNoActiveHelp(t *testing.T) {
 
 	// check that active help is being disabled
 	activeHelpVar := activeHelpEnvVar(c.Name())
-	check(t, output, fmt.Sprintf("%s=0", activeHelpVar))
+	check(t, output, fmt.Sprintf("${env:%s}=0", activeHelpVar))
 }