[doc_comment plugin] Handle optional arguments
[doc_comment plugin] Handle optional arguments

emallson/tern,talyian/tern,cdosborn/tern,eranif/tern,messfairy/tern,Icenium/tern,albertinad/tern,emallson/tern,cdosborn/tern,ternjs/tern,ternjs/tern,Icenium/tern,kentdoppelganger/tern,marijnh/tern,dorellang/tern,adrianton3/tern,sqs/tern,pombredanne/tern,kylehg/tern,cdosborn/tern,rustemferreira/tern,jgiles/tern,anandthakker/tern,othree/tern,mcanthony/tern,OliverJAsh/tern,dorellang/tern,dorellang/tern,emacsmirror/tern,cloud9ide/tern,messfairy/tern,fileability/tern,mcanthony/tern,jason0x43/tern,angelozerr/tern,mcanthony/tern,emacsmirror/tern,cloud9ide/tern,neoclide/tern,purcell/tern,albertinad/tern,emallson/tern,talyian/tern,inafact/tern,anandthakker/tern,talyian/tern,othree/tern,vegansk/tern,adrianton3/tern,MarcelGerber/tern,anandthakker/tern,messfairy/tern,eranif/tern,othree/tern,angelozerr/tern,fileability/tern,ypresto/tern,ternjs/tern,eranif/tern,fileability/tern,emacsmirror/tern,neoclide/tern,MarcelGerber/tern,rustemferreira/tern,marijnh/tern,marijnh/tern,rustemferreira/tern,MarcelGerber/tern,jgiles/tern,Icenium/tern,jgiles/tern,adrianton3/tern,albertinad/tern,neoclide/tern