Update docs

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- getoptions: Make the parser name optional
+
 ## [3.2.0] - 2021-04-30
 
 ### Added

docs/References.md

@@ -28,7 +28,8 @@
 This function is, to be exact, an option parser generator.
 An option parser is defined by `eval` the generated code.
 
-`getoptions <parser_definition> <parser_name> [arguments]...`
+`getoptions <definition> [<parser|-> [arguments]...]`
+
 
 - parser_definition - Option parser definition
 - parser_name - Function name for option parser
@@ -46,8 +47,8 @@ parse "$@"          # Option parsing
 eval "set -- $REST" # Exclude options from arguments
 ```
 
-If you use `-` as the option parser name, it will define the default option parser
-and parse the arguments directly.
+If you omit the option parser name or use `-`, it will define the default option
+parser and parse arguments immediately.
 
 ```sh
 parser_definition() {
@@ -76,7 +77,7 @@ automatically by the `help` attribute of `getoptions`, but you can also call it
 The function to display help does not necessarily need to be generated by `getoptions_help`.
 Since it is just a function, you may define your own shell function.
 
-`getoptions_help <parser_definition> <help_name> [arguments...]`
+`getoptions_help <definition> <help> [arguments...]`
 
 - parser_definition - Option parser definition
 - help_name - Function name for help display