attempt completion of #122

Author: DannyBen

lib/bashly/views/command/required_args_filter.erb

@@ -1,6 +1,6 @@
 # :command.required_args_filter
 % required_args.each do |arg|
-if [[ $1 && $1 != -* ]]; then
+if [[ -n ${1+x} && $1 != -* ]]; then
 <%= arg.render(:validations).indent 2 %>
   args[<%= arg.name %>]=$1
   shift

spec/fixtures/workspaces/empty-args/src/bashly.yml

@@ -9,4 +9,6 @@ commands:
   - long: --flag
     arg: value
   args:
-  - name: arg
+  - name: required_arg
+    required: true
+  - name: optional_arg

spec/fixtures/workspaces/empty-args/src/test_command.sh

@@ -1,4 +1 @@
-echo "# this file is located in 'src/test_command.sh'"
-echo "# code for 'cli test' goes here"
-echo "# you can edit it freely and regenerate (it will not be overwritten)"
 inspect_args

spec/fixtures/workspaces/empty-args/test.sh

@@ -7,5 +7,7 @@ bundle exec bashly generate
 
 set -x
 
+./cli test a b --flag c
 ./cli test ''
-./cli test --flag ''
+./cli test '' --flag ''
+./cli test '' '' --flag ''