-X option with space (like -X embulk_home path/to/home) behavior.

[hiroyuki-sato]

Embulk -X option use the equal character for key-value pair. It also works space instead of the =.
But It's not expected behavior. dmikurube comment in twitter

• Write the following environmental information.
  • OS version: macOS 12.3.1
  • Java version: 1.8.0_331
  • Embulk version: 0.10.35

= and -X options. (Expected behavior)

% java -jar /path/to/embulk/embulk-0.10.35.jar \
  -X embulk_home=/tmp/embulk_with_equal \
  -X jruby=file:///path/to/jruby/jruby-complete-9.3.4.0.jar gem install msgpack
2022-04-22 09:04:27.578 +0900 [INFO] (main): embulk_home is set from command-line: /tmp/embulk_with_equal
2022-04-22 09:04:27.582 +0900 [INFO] (main): m2_repo is set as a sub directory of embulk_home: /tmp/embulk_with_equal/lib/m2/repository
2022-04-22 09:04:27.583 +0900 [INFO] (main): gem_home is set as a sub directory of embulk_home: /tmp/embulk_with_equal/lib/gems
2022-04-22 09:04:27.583 +0900 [INFO] (main): gem_path is set empty.
2022-04-22 09:04:31.720 +0900 [INFO] (main): Environment variable "GEM_HOME" is not set. Setting "GEM_HOME" to "/tmp/embulk_with_equal/lib/gems" from Embulk system property "gem_home" for the "gem" command.
Fetching msgpack-1.5.1-java.gem
Successfully installed msgpack-1.5.1-java
Parsing documentation for msgpack-1.5.1-java
Installing ri documentation for msgpack-1.5.1-java
Done installing documentation for msgpack after 3 seconds
1 gem installed

(space) and -X option (Unexpected behavior)

% java -jar /path/to/embulk/embulk-0.10.35.jar \
  -X embulk_home /tmp/embulk_with_space \
  -X jruby file:///path/to/jruby/jruby-complete-9.3.4.0.jar gem install msgpack
2022-04-22 09:05:17.730 +0900 [INFO] (main): embulk_home is set from command-line: /tmp/embulk_with_space
2022-04-22 09:05:17.734 +0900 [INFO] (main): m2_repo is set as a sub directory of embulk_home: /tmp/embulk_with_space/lib/m2/repository
2022-04-22 09:05:17.734 +0900 [INFO] (main): gem_home is set as a sub directory of embulk_home: /tmp/embulk_with_space/lib/gems
2022-04-22 09:05:17.734 +0900 [INFO] (main): gem_path is set empty.
2022-04-22 09:05:21.352 +0900 [INFO] (main): Environment variable "GEM_HOME" is not set. Setting "GEM_HOME" to "/tmp/embulk_with_space/lib/gems" from Embulk system property "gem_home" for the "gem" command.
Fetching msgpack-1.5.1-java.gem
Successfully installed msgpack-1.5.1-java
Parsing documentation for msgpack-1.5.1-java
Installing ri documentation for msgpack-1.5.1-java
Done installing documentation for msgpack after 2 seconds
1 gem installed

confirm installed gem

% cd /tmp/embulk_with_space/
% fd msgpack
lib/gems/cache/msgpack-1.5.1-java.gem
lib/gems/doc/msgpack-1.5.1-java
lib/gems/doc/msgpack-1.5.1-java/ri/Array/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/Bignum/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/FalseClass/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/Fixnum/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/Float/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/Hash/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/Integer/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/MessagePack/Bigint/from_msgpack_ext-c.ri
lib/gems/doc/msgpack-1.5.1-java/ri/MessagePack/Bigint/to_msgpack_ext-c.ri
lib/gems/doc/msgpack-1.5.1-java/ri/MessagePack/CoreExt/to_msgpack-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/MessagePack/ExtensionValue/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/MessagePack/Timestamp/from_msgpack_ext-c.ri
lib/gems/doc/msgpack-1.5.1-java/ri/MessagePack/Timestamp/to_msgpack_ext-c.ri
lib/gems/doc/msgpack-1.5.1-java/ri/MessagePack/Timestamp/to_msgpack_ext-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/NilClass/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/String/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/Symbol/from_msgpack_ext-c.ri
lib/gems/doc/msgpack-1.5.1-java/ri/Symbol/to_msgpack_with_packer-i.ri
lib/gems/doc/msgpack-1.5.1-java/ri/TrueClass/to_msgpack_with_packer-i.ri
lib/gems/gems/msgpack-1.5.1-java
lib/gems/gems/msgpack-1.5.1-java/lib/msgpack
lib/gems/gems/msgpack-1.5.1-java/lib/msgpack/msgpack.jar
lib/gems/gems/msgpack-1.5.1-java/lib/msgpack.rb
lib/gems/specifications/msgpack-1.5.1-java.gemspec