Fix pr checks exit code (cli#9452)

* Enhance  with exit code documentation

* Add new error message for PR check

* Refine gh pr checks: Add exit code 8

* Update EXIT CODES section format in man page generation

internal/docs/man.go

@@ -198,6 +198,15 @@ func manPrintJSONFields(buf *bytes.Buffer, command *cobra.Command) {
 	buf.WriteString("\n")
 }
 
+func manPrintExitCodes(buf *bytes.Buffer) {
+	buf.WriteString("# EXIT CODES\n")
+	buf.WriteString("0: Successful execution\n\n")
+	buf.WriteString("1: Error\n\n")
+	buf.WriteString("2: Command canceled\n\n")
+	buf.WriteString("4: Authentication required\n\n")
+	buf.WriteString("NOTE: Specific commands may have additional exit codes. Refer to the command's help for more information.\n\n")
+}
+
 func genMan(cmd *cobra.Command, header *GenManHeader) []byte {
 	cmd.InitDefaultHelpCmd()
 	cmd.InitDefaultHelpFlag()
@@ -217,6 +226,7 @@ func genMan(cmd *cobra.Command, header *GenManHeader) []byte {
 	manPrintOptions(buf, cmd)
 	manPrintAliases(buf, cmd)
 	manPrintJSONFields(buf, cmd)
+	manPrintExitCodes(buf)
 	if len(cmd.Example) > 0 {
 		buf.WriteString("# EXAMPLE\n")
 		buf.WriteString(fmt.Sprintf("```\n%s\n```\n", cmd.Example))

internal/docs/man_test.go

@@ -129,6 +129,31 @@ func TestGenManJSONFields(t *testing.T) {
 	checkStringContains(t, output, "baz")
 }
 
+func TestGenManDocExitCodes(t *testing.T) {
+	header := &GenManHeader{
+		Title:   "Project",
+		Section: "1",
+	}
+	cmd := &cobra.Command{
+		Use:   "test-command",
+		Short: "A test command",
+		Long:  "A test command for checking exit codes section",
+	}
+	buf := new(bytes.Buffer)
+	if err := renderMan(cmd, header, buf); err != nil {
+		t.Fatal(err)
+	}
+	output := buf.String()
+
+	// Check for the presence of the exit codes section
+	checkStringContains(t, output, ".SH EXIT CODES")
+	checkStringContains(t, output, "0: Successful execution")
+	checkStringContains(t, output, "1: Error")
+	checkStringContains(t, output, "2: Command canceled")
+	checkStringContains(t, output, "4: Authentication required")
+	checkStringContains(t, output, "NOTE: Specific commands may have additional exit codes. Refer to the command's help for more information.")
+}
+
 func TestManPrintFlagsHidesShortDeprecated(t *testing.T) {
 	c := &cobra.Command{}
 	c.Flags().StringP("foo", "f", "default", "Foo flag")

pkg/cmd/pr/checks/checks.go

@@ -66,6 +66,9 @@ func NewCmdChecks(f *cmdutil.Factory, runF func(*ChecksOptions) error) *cobra.Co
 
 			Without an argument, the pull request that belongs to the current branch
 			is selected.
+
+			Additional exit codes:
+				8: Checks pending
 		`),
 		Args: cobra.MaximumNArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {

pkg/cmd/root/help.go

@@ -182,6 +182,7 @@ func rootHelpFunc(f *cmdutil.Factory, command *cobra.Command, args []string) {
 	helpEntries = append(helpEntries, helpEntry{"LEARN MORE", heredoc.Docf(`
 		Use %[1]sgh <command> <subcommand> --help%[1]s for more information about a command.
 		Read the manual at https://cli.github.com/manual
+		Learn about exit codes using %[1]sgh help exit-codes%[1]s
 	`, "`")})
 
 	out := f.IOStreams.Out