C:\mongo\mongodb-win32-x86_64-2013-01-09\bin>mongo.exe
MongoDB shell version: 2.3.2-pre-
connecting to: test
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
        http://docs.mongodb.org/
Questions? Try the support group
        http://groups.google.com/group/mongodb-user
Server has startup warnings:
Wed Jan 09 22:03:45.435 [initandlisten]
Wed Jan 09 22:03:45.436 [initandlisten] ** NOTE: This is a development version (
2.3.2-pre-) of MongoDB.
Wed Jan 09 22:03:45.436 [initandlisten] **       Not recommended for production.

Wed Jan 09 22:03:45.436 [initandlisten]
> db.foo.ensureIndex({a:"text"})
> db.foo.getIndexes()
[
        {
                "v" : 1,
                "key" : {
                        "_id" : 1
                },
                "ns" : "test.foo",
                "name" : "_id_"
        },
        {
                "v" : 0,
                "key" : {
                        "_fts" : "text",
                        "_ftsx" : 1
                },
                "ns" : "test.foo",
                "name" : "a_text",
                "weights" : {
                        "a" : 1
                },
                "default_language" : "english",
                "language_override" : "language"
        }
]
>

$ mongodb-osx-x86_64-2013-01-09/bin/mongod --fork --logpath /dev/null
about to fork child process, waiting until server is ready for connections.
forked process: 41171
all output going to: /dev/null
child process started successfully, parent exiting
$ mongodb-osx-x86_64-2013-01-09/bin/mongo
MongoDB shell version: 2.3.2-pre-
connecting to: test
Server has startup warnings: 
Wed Jan  9 16:58:40.693 [initandlisten] 
Wed Jan  9 16:58:40.694 [initandlisten] ** NOTE: This is a development version (2.3.2-pre-) of MongoDB.
Wed Jan  9 16:58:40.694 [initandlisten] **       Not recommended for production.
Wed Jan  9 16:58:40.694 [initandlisten] 
> db.foo.ensureIndex({a:"text"})
{
	"err" : "text search not enabled",
	"code" : 16633,
	"n" : 0,
	"connectionId" : 1,
	"ok" : 1
}
>

         BSONObj FTSIndexPlugin::adjustIndexSpec( const BSONObj& spec ) const {
             StringData desc  = cc().desc();
             if ( desc.find( "conn" ) == 0 ) {
                 // this is to make sure we only complain for users
                 // if you do get a text index created an a primary
                 // want it to index on the secondary as well
                 massert( 16633, "text search not enabled", isTextSearchEnabled() );
             }
             return FTSSpec::fixSpec( spec );
         }