Confusing behavior with --dynamic-space-size too late

[Luke Gorrie]

How should supplying --dynamic-space-size late, e.g. after an --eval argument, behave? Maybe print a warning that it's too late to configure the heap size and then continue?

I just realized that I've been making this mistake all year by misusing NixOS's common-lisp.sh wrapper script to SBCL which splices in an --eval before my --dynamic-space-size argument.

Initially I thought the behaviour was to silently ignore the late argument but when I try to make a test case it seems to actually halt argument processing and take me straight to the REPL:

$ uname -a
Linux thinky 5.14.1 #1-NixOS SMP Fri Sep 3 08:24:03 UTC 2021 x86_64 GNU/Linux

$ sbcl --eval '(format t "Hello ~a~%" (sb-ext:dynamic-space-size))' \
       --dynamic-space-size 4096 \
       --eval '(format t "Goodbye ~a~%" (sb-ext:dynamic-space-size))' \
       --eval '(quit)'
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