Refinements to removal of zsh hack

app_test.go

@@ -228,6 +228,7 @@ func ExampleApp_Run_subcommandNoAction() {
 }
 
 func ExampleApp_Run_bashComplete_withShortFlag() {
+	os.Setenv("SHELL", "bash")
 	os.Args = []string{"greet", "-", "--generate-bash-completion"}
 
 	app := NewApp()
@@ -255,6 +256,7 @@ func ExampleApp_Run_bashComplete_withShortFlag() {
 }
 
 func ExampleApp_Run_bashComplete_withLongFlag() {
+	os.Setenv("SHELL", "bash")
 	os.Args = []string{"greet", "--s", "--generate-bash-completion"}
 
 	app := NewApp()
@@ -283,6 +285,7 @@ func ExampleApp_Run_bashComplete_withLongFlag() {
 	// --similar-flag
 }
 func ExampleApp_Run_bashComplete_withMultipleLongFlag() {
+	os.Setenv("SHELL", "bash")
 	os.Args = []string{"greet", "--st", "--generate-bash-completion"}
 
 	app := NewApp()
@@ -315,7 +318,7 @@ func ExampleApp_Run_bashComplete_withMultipleLongFlag() {
 }
 
 func ExampleApp_Run_bashComplete() {
-	// set args for examples sake
+	os.Setenv("SHELL", "bash")
 	os.Args = []string{"greet", "--generate-bash-completion"}
 
 	app := &App{

autocomplete/zsh_autocomplete

@@ -1,16 +1,20 @@
 #compdef $PROG
 
-local -a opts
-local cur
-cur=${words[-1]}
-if [[ "$cur" == "-"* ]]; then
-  opts=("${(@f)$(${words[@]:0:#words[@]-1} ${cur} --generate-bash-completion)}")
-else
-  opts=("${(@f)$(${words[@]:0:#words[@]-1} --generate-bash-completion)}")
-fi
+_cli_zsh_autocomplete() {
+  local -a opts
+  local cur
+  cur=${words[-1]}
+  if [[ "$cur" == "-"* ]]; then
+    opts=("${(@f)$(${words[@]:0:#words[@]-1} ${cur} --generate-bash-completion)}")
+  else
+    opts=("${(@f)$(${words[@]:0:#words[@]-1} --generate-bash-completion)}")
+  fi
 
-if [[ "${opts[1]}" != "" ]]; then
-  _describe 'values' opts
-else
-  _files
-fi
+  if [[ "${opts[1]}" != "" ]]; then
+    _describe 'values' opts
+  else
+    _files
+  fi
+}
+
+compdef _cli_zsh_autocomplete $PROG

help_test.go

@@ -1040,12 +1040,16 @@ func TestHideHelpCommand_WithSubcommands(t *testing.T) {
 }
 
 func TestDefaultCompleteWithFlags(t *testing.T) {
+	origEnv := os.Environ()
 	origArgv := os.Args
 
 	t.Cleanup(func() {
 		os.Args = origArgv
+		resetEnv(origEnv)
 	})
 
+	os.Setenv("SHELL", "bash")
+
 	for _, tc := range []struct {
 		name     string
 		c        *Context