Most VM options are a single word, using an embedded ':' to separate the option name from the option value.

-addmods and -limitmods are different and take a value in the following argument.

jtreg needs to support such options.

This requires work in 2 (or 3) places.

jtreg command line handling:
Currently, you can use a workaround of -vmoptions:"-addmods m1,m2,m3" etc

action options
e.g. @compile, @run main

JDKOpts
This is the (internal) class that composes lists of options for javac and the java launcher, merging values when the set of instances is restricted.