Is it reasonable to assume that the launcher and installed commands will
always be from the same version of DejaGnu?
If so, I can have the launcher locate runtest.exp and grep it for "^set
frame_version" instead of adding another copy of the DejaGnu version.
(The commands will be installed parallel to runtest.exp in a "commands"
directory.) Handling --version in the launcher avoids each command
needing to support it.
The existing code seems to make this assumption -- the runtest shell
script carries no version information and simply passes --version on to
runtest.exp.
-- Jacob
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