grunt, grunt-shell - command inheritance - coffeescript

Question

I need something like command inheritance like this:
shell:
virtualenvActivate:
command: [
'. `command -v virtualenvwrapper.sh`'
'workon <%= pkg.name %>'
].join '&&'
pelican:
command: [
shell:virtualenvActivate # <-- THIS LINE
'pelican src/content/ -o dist/ -s publishconf.py'
].join '&&'
Is it ever possible?

Answer 1

Unfortunately, as far as I know, CoffeeScript does not currently implements YAML's anchor/reference features.
I don't know Grunt, but generally speaking, for now, you would probably have to declare the common data outside of your data structure:
_my_command = [
'. `command -v virtualenvwrapper.sh`'
'workon <%= pkg.name %>'
].join '&&'
shell:
virtualenvActivate:
command: _my_command
pelican:
command: [
_my_command
'pelican src/content/ -o dist/ -s publishconf.py'
].join '&&'
For more advanced use case, you probably can go to something like (ab)using an object constructor to achieve the desired result. Something like that maybe:
shell: new ->
#virtualenvActivate =
command: [
'. `command -v virtualenvwrapper.sh`'
'workon <%= pkg.name %>'
].join '&&'
#pelican =
command: [
console.log "A", this.virtualenvActivate
#virtualenvActivate.command
'pelican src/content/ -o dist/ -s publishconf.py'
].join '&&'
#
That being said, I don't know if this would be the recommended way though.