Support passing repeated args as comma separated list

workspace/CHANGELOG.md

@@ -10,6 +10,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 * `workspace.list`: support filtering by root paths through the `--path` flag.
 * `workspace.run`: support filtering by root paths through the `--path` flag.
+* Support passing most repeated CLI arguments as a comma separated list, for
+  example you can now do:
+
+  ```bash
+  $ mix workspace.run -t format -p p1,p2,p3
+  ```
 
 ### Fixed
 

workspace/lib/mix/tasks/workspace.run.ex

@@ -31,7 +31,8 @@ defmodule Mix.Tasks.Workspace.Run do
       doc: """
       Allow the task for this specific project to fail. Can be set more than once. 
       """,
-      multiple: true
+      multiple: true,
+      separator: ","
     ],
     early_stop: [
       type: :boolean,

workspace/lib/workspace/cli_options.ex

@@ -6,6 +6,7 @@ defmodule Workspace.CliOptions do
     project: [
       type: :string,
       multiple: true,
+      separator: ",",
       short: "p",
       doc:
         "The project name, can be defined multiple times. If not set all projects are considered",
@@ -15,6 +16,7 @@ defmodule Workspace.CliOptions do
       type: :string,
       short: "e",
       multiple: true,
+      separator: ",",
       doc: "Ignore the given projects",
       doc_section: :filtering
     ],
@@ -32,6 +34,7 @@ defmodule Workspace.CliOptions do
       type: :string,
       multiple: true,
       long: "tag",
+      separator: ",",
       doc: """
       If set, only projects with the given tag(s) will be considered. For scoped tags you should
       provide a colon separated string (examples: `shared`, `scope:api`, `type:utils`). For
@@ -58,6 +61,7 @@ defmodule Workspace.CliOptions do
     excluded_tags: [
       type: :string,
       multiple: true,
+      separator: ",",
       long: "exclude-tag",
       doc: """
       If set, any projects with any of the given tag(s) will be excluded. For scoped tags you should

workspace/mix.exs

@@ -55,7 +55,7 @@ defmodule Workspace.MixProject do
   defp deps do
     [
       {:cli_options, path: "../cli_options/"},
-      # {:cli_options, "~> 0.1.2"},
+      # {:cli_options, "~> 0.1.3"},
       {:nimble_options, "~> 1.1.1"},
       {:jason, "~> 1.4.1", optional: true},
       {:ex_doc, "== 0.34.2", only: :dev, runtime: false},

workspace/test/mix/tasks/workspace.run_test.exs

@@ -291,9 +291,7 @@ defmodule Mix.Tasks.Workspace.RunTest do
     test "if execution on a project fails the command raises" do
       args = [
         "-p",
-        "package_default_a",
-        "-p",
-        "package_default_b",
+        "package_default_a,package_default_b",
         "-t",
         "cmd",
         "--workspace-path",