docs: simplify examples

Author: cmilesio

README.md

@@ -315,8 +315,8 @@ WithContext binds the command to a context.
 ```go
 ctx, cancel := context.WithTimeout(context.Background(), time.Second)
 defer cancel()
-res, err := execx.Command("go", "env", "GOOS").WithContext(ctx).Run()
-fmt.Println(err == nil && res.ExitCode == 0)
+res, _ := execx.Command("go", "env", "GOOS").WithContext(ctx).Run()
+fmt.Println(res.ExitCode == 0)
 // #bool true
 ```
 
@@ -325,8 +325,8 @@ fmt.Println(err == nil && res.ExitCode == 0)
 WithDeadline binds the command to a deadline.
 
 ```go
-res, err := execx.Command("go", "env", "GOOS").WithDeadline(time.Now().Add(2 * time.Second)).Run()
-fmt.Println(err == nil && res.ExitCode == 0)
+res, _ := execx.Command("go", "env", "GOOS").WithDeadline(time.Now().Add(2 * time.Second)).Run()
+fmt.Println(res.ExitCode == 0)
 // #bool true
 ```
 
@@ -335,8 +335,8 @@ fmt.Println(err == nil && res.ExitCode == 0)
 WithTimeout binds the command to a timeout.
 
 ```go
-res, err := execx.Command("go", "env", "GOOS").WithTimeout(2 * time.Second).Run()
-fmt.Println(err == nil && res.ExitCode == 0)
+res, _ := execx.Command("go", "env", "GOOS").WithTimeout(2 * time.Second).Run()
+fmt.Println(res.ExitCode == 0)
 // #bool true
 ```
 
@@ -493,8 +493,8 @@ fmt.Println(out != "")
 Run executes the command and returns the result and any error.
 
 ```go
-res, err := execx.Command("go", "env", "GOOS").Run()
-fmt.Println(err == nil && res.ExitCode == 0)
+res, _ := execx.Command("go", "env", "GOOS").Run()
+fmt.Println(res.ExitCode == 0)
 // #bool true
 ```
 
@@ -504,8 +504,8 @@ Start executes the command asynchronously.
 
 ```go
 proc := execx.Command("go", "env", "GOOS").Start()
-res, err := proc.Wait()
-fmt.Println(err == nil && res.ExitCode == 0)
+res, _ := proc.Wait()
+fmt.Println(res.ExitCode == 0)
 // #bool true
 ```
 
@@ -566,7 +566,7 @@ fmt.Println(out)
 
 ### <a id="creationflags"></a>CreationFlags
 
-CreationFlags sets Windows creation flags.
+CreationFlags is a no-op on non-Windows platforms.
 
 _Example: creation flags_
 
@@ -584,7 +584,7 @@ fmt.Println(execx.Command("go", "env", "GOOS").CreationFlags(0) != nil)
 
 ### <a id="hidewindow"></a>HideWindow
 
-HideWindow controls window visibility and sets CREATE_NO_WINDOW for console apps.
+HideWindow is a no-op on non-Windows platforms.
 
 _Example: hide window_
 
@@ -602,7 +602,7 @@ fmt.Println(execx.Command("go", "env", "GOOS").HideWindow(true) != nil)
 
 ### <a id="pdeathsig"></a>Pdeathsig
 
-Pdeathsig is a no-op on Windows.
+Pdeathsig is a no-op on non-Linux Unix platforms.
 
 _Example: pdeathsig_
 
@@ -627,7 +627,7 @@ fmt.Println(execx.Command("go", "env", "GOOS").Pdeathsig(0) != nil)
 
 ### <a id="setpgid"></a>Setpgid
 
-Setpgid is a no-op on Windows.
+Setpgid sets the process group ID behavior.
 
 _Example: setpgid_
 
@@ -652,7 +652,7 @@ fmt.Println(execx.Command("go", "env", "GOOS").Setpgid(true) != nil)
 
 ### <a id="setsid"></a>Setsid
 
-Setsid is a no-op on Windows.
+Setsid sets the session ID behavior.
 
 _Example: setsid_
 
@@ -707,11 +707,11 @@ fmt.Println(err == nil && res.Stdout == "ok")
 PipeStrict sets strict pipeline semantics.
 
 ```go
-res, err := execx.Command("false").
+res, _ := execx.Command("false").
 	Pipe("printf", "ok").
 	PipeStrict().
 	Run()
-fmt.Println(err == nil && res.ExitCode != 0)
+fmt.Println(res.ExitCode != 0)
 // #bool true
 ```
 

examples/creationflags/main.go

@@ -9,7 +9,7 @@ import (
 )
 
 func main() {
-	// CreationFlags is a no-op on non-Windows platforms.
+	// CreationFlags sets Windows creation flags.
 
 	// Example: creation flags
 	fmt.Println(execx.Command("go", "env", "GOOS").CreationFlags(0) != nil)

examples/hidewindow/main.go

@@ -9,7 +9,7 @@ import (
 )
 
 func main() {
-	// HideWindow is a no-op on non-Windows platforms.
+	// HideWindow controls window visibility and sets CREATE_NO_WINDOW for console apps.
 
 	// Example: hide window
 	fmt.Println(execx.Command("go", "env", "GOOS").HideWindow(true) != nil)

examples/pdeathsig/main.go

@@ -9,7 +9,7 @@ import (
 )
 
 func main() {
-	// Pdeathsig sets a parent-death signal on Linux.
+	// Pdeathsig is a no-op on Windows.
 
 	// Example: pdeathsig
 	fmt.Println(execx.Command("go", "env", "GOOS").Pdeathsig(0) != nil)

examples/pipestrict/main.go

@@ -12,10 +12,10 @@ func main() {
 	// PipeStrict sets strict pipeline semantics.
 
 	// Example: strict
-	res, err := execx.Command("false").
+	res, _ := execx.Command("false").
 		Pipe("printf", "ok").
 		PipeStrict().
 		Run()
-	fmt.Println(err == nil && res.ExitCode != 0)
+	fmt.Println(res.ExitCode != 0)
 	// #bool true
 }

examples/run/main.go

@@ -12,7 +12,7 @@ func main() {
 	// Run executes the command and returns the result and any error.
 
 	// Example: run
-	res, err := execx.Command("go", "env", "GOOS").Run()
-	fmt.Println(err == nil && res.ExitCode == 0)
+	res, _ := execx.Command("go", "env", "GOOS").Run()
+	fmt.Println(res.ExitCode == 0)
 	// #bool true
 }

examples/setpgid/main.go

@@ -9,7 +9,7 @@ import (
 )
 
 func main() {
-	// Setpgid sets the process group ID behavior.
+	// Setpgid is a no-op on Windows.
 
 	// Example: setpgid
 	fmt.Println(execx.Command("go", "env", "GOOS").Setpgid(true) != nil)

examples/setsid/main.go

@@ -9,7 +9,7 @@ import (
 )
 
 func main() {
-	// Setsid sets the session ID behavior.
+	// Setsid is a no-op on Windows.
 
 	// Example: setsid
 	fmt.Println(execx.Command("go", "env", "GOOS").Setsid(true) != nil)

examples/start/main.go

@@ -13,7 +13,7 @@ func main() {
 
 	// Example: start
 	proc := execx.Command("go", "env", "GOOS").Start()
-	res, err := proc.Wait()
-	fmt.Println(err == nil && res.ExitCode == 0)
+	res, _ := proc.Wait()
+	fmt.Println(res.ExitCode == 0)
 	// #bool true
 }

examples/withcontext/main.go

@@ -16,7 +16,7 @@ func main() {
 	// Example: with context
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
 	defer cancel()
-	res, err := execx.Command("go", "env", "GOOS").WithContext(ctx).Run()
-	fmt.Println(err == nil && res.ExitCode == 0)
+	res, _ := execx.Command("go", "env", "GOOS").WithContext(ctx).Run()
+	fmt.Println(res.ExitCode == 0)
 	// #bool true
 }