Show tokens with -n help

README.md

@@ -253,7 +253,7 @@ The recommended way to include __release.sh__ in a project is to:
       -a wago-id       Set the project id used on Wago Addons for uploading. (Use 0 to unset the TOC value)
       -g game-version  Set the game version to use for uploading.
       -m pkgmeta.yaml  Set the pkgmeta file to use.
-      -n archive-name  Set the archive name template. Defaults to "{package-name}-{project-version}{nolib}{classic}".
+      -n archive-name  Set the archive name template. Use "-n help" for more info.
 
 ### Uploading
 

release.sh

@@ -232,6 +232,24 @@ while getopts ":celLzusop:dw:a:r:t:g:m:n:" opt; do
 		pkgmeta_file="$OPTARG"
 		;;
 	n)
+		if [ "$OPTARG" = "help" ]; then
+			cat <<-'EOF' >&2
+			Set the archive name template. There are several string substitutions you can use to
+			include version control or build type infomation in the file name.
+
+			The default file name is "{package-name}-{project-version}{nolib}{classic}".
+
+			Tokens: {package-name}{project-revision}{project-hash}{project-abbreviated-hash}
+			        {project-author}{project-date-iso}{project-date-integer}{project-timestamp}
+			        {project-version}{game-type}{release-type}
+
+			Flags:  {alpha}{beta}{nolib}{classic}
+
+			Tokens are always replaced with their value. Flags are shown prefixed with a dash
+			depending on the build type.
+			EOF
+			exit 0
+		fi
 		# TODO some sort of validation?
 		file_name="$OPTARG"
 		;;