feat: new flag exit-code-if-no-bump #4

.idea/runConfigurations/version_auto___git.xml

 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="version auto --git" type="GoApplicationRunConfiguration" factoryName="Go Application">
     <module name="version" />
-    <working_directory value="$PROJECT_DIR$" />
+    <working_directory value="$PROJECT_DIR$/../../alvine/components/alvine.dispatcher" />
     <parameters value="auto --git" />
     <EXTENSION ID="com.fapiko.jetbrains.plugins.better_direnv.runconfigs.GolandRunConfigurationExtension">
       <option name="DIRENV_ENABLED" value="false" />

.idea/version.iml

@@ -7,6 +7,7 @@
       <excludeFolder url="file://$MODULE_DIR$/.devenv" />
       <excludeFolder url="file://$MODULE_DIR$/.direnv" />
       <excludeFolder url="file://$MODULE_DIR$/build" />
+      <excludeFolder url="file://$MODULE_DIR$/.task" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />

README.md

@@ -81,6 +81,15 @@ It is important to note that this feature requires that your commit messages
 follow the [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/) 
 message format.
 
+The `exit-code-if-no-bump` flag can be used to make the command exit with a non-zero exit.
+This is useful for CI/CD pipelines.
+
+```bash
+version auto --exit-code-if-no-bump
+```
+
+In this case, the command will exit with the exit code 1 if no version bump is required.
+
 **Predict**
 
 The `predict` command allows you to predict the next version based on the

source/commandline.go

@@ -31,6 +31,7 @@ type commandLineOptions struct {
 	Date struct {
 	} `command:"date" description:"print the current date and time in the format YYYYMMDDHHMMSS"`
 	Auto struct {
+		ExitCode bool `short:"e" long:"exit-code-if-no-bump" description:"exit code to use if no notable changes are found" default:"0"`
 	} `command:"auto" description:"check the git repository and increase the version if necessary. This implies --git"`
 	Predict struct {
 	} `command:"predict" description:"predict the next version based on the git history. This implies --git"`
@@ -178,7 +179,13 @@ func executeCommand() {
 		case OtherCommit:
 			fmt.Println("No notable changes found.")
 			fmt.Println("If you want to force a version\nincrease, use the major, minor\nor patch command.")
-			os.Exit(0)
+
+			exitCode := 0
+			if arguments.Auto.ExitCode {
+				exitCode = 1
+			}
+
+			os.Exit(exitCode)
 		}
 
 	}