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Here's my serious FORTRAN problem (code link in previous post):

The recommended GET_COMMAND_ARGUMENT function seems to assume you know the length of the argument ahead of time. Obviously, I don't.

https://gcc.gnu.org/onlinedocs/gfortran/GET_005fCOMMAND_005fARGUMENT.html

It allows me to pass in an `allocatable` string, but I believe it is leaving that string of length 0 if I do not ALLOCATE() it, and the fetched string is ''. Is there a way to get the length of a command-line argument before GET-ing it?

I see GET_COMMAND, but that's… awkward