Re: What does this error mean in clisp?

observe this note in the beginning of your paste:

--8<---------------cut here---------------start------------->8---
Type :h and hit Enter for context help.
--8<---------------cut here---------------end--------------->8---

I added it many years ago in the hope that it would be useful, but,
apparently, it is not.

Now,

--8<---------------cut here---------------start------------->8---
[7]> (expt 4 20))
1099511627776
[8]>
*** - READ from #<INPUT CONCATENATED-STREAM #<INPUT STRING-INPUT-STREAM> #<IO TERMINAL-STREAM>>: an object cannot start with #\)
--8<---------------cut here---------------end--------------->8---

so you typed 2 closing parens instead of one and clisp is telling you
just that.
clisp keeps reading your input, it is not limited to one form per line, e.g.:

--8<---------------cut here---------------start------------->8---
[1]> (1+ 1) (! 10)
2
[2]> 
3628800
[3]> 
--8<---------------cut here---------------end--------------->8---

so when it is done reading (expt 4 20), it reads ) and tells you that
it's not okay.

now, if you want to know how to debug an error or get out of the error
prompts, you should either follow the first message you got from clisp
(see above, i.e., type :h RET) or, better yet, RTFM
(http://clisp.org/impnotes/repl.html).


-- 
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