On Sun, Nov 28, 2010 at 7:33 PM, Ville Voutilainen ville.voutilainen@gmail.com wrote:

On 29 November 2010 03:14, Gabriel Dos Reis gdr@integrable-solutions.net wrote:

...

suggests as first option `Our wiki'.  Clicking on the link    http://trac.common-lisp.net/project/wiki displays the message as indicated in the $SUBJECT. I take that to indicate that ABCL (website) is relying on a dangling reference...

Thanks for the heads-up, that link is botched. We'll fix it.

...

That being reported, where is the documentation of the options accepted by the `abcl' driver?

I don't think there is any documentation for those besides the source code in Interpreter.java (preprocessCommandLineArguments). We'll need to fix that as well.

OK, thanks. I see that, among other things, the following are supported (at least from eyeballing the source code)

--eval --batch --noinform

and they are part of what I was looking for. However, --batch does not seem to work to do anything that it name would suggest -- e.g. it still lands me into the REPL (which I don't want). Furthermore, --eval does not print the result of evaluation. For example, trying

abcl --noinform --batch --eval '(lisp-implementation-version)'

lands me squarely into the REPL with no printed result. I was expecting "0.24.0-dev" printed on the standard output stream, and control back to the shell.

-- Gaby

On 29 November 2010 03:53, Gabriel Dos Reis gdr@integrable-solutions.net wrote:

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Furthermore, --eval does not print the result of evaluation.  For example, trying     abcl --noinform --batch --eval '(lisp-implementation-version)'

Fix committed as r13090 on trunk. Please check that it fixes the problems with --batch/--eval. Note that currently merely doing --eval '(lisp-implementation-version)' doesn't print anything on the standard output, as (lisp-implementation-version) just returns a string. I have so far chosen not to make --batch mode print evaluation results automatically, so if you want to print something on stdout in batch mode, use FORMAT.

Please give feedback if the approach chosen is reasonable.

Thanks, -VJV-

On Sat, Dec 11, 2010 at 1:36 AM, Gabriel Dos Reis gdr@integrable-solutions.net wrote:

With the new version, when I do

echo '(format nil "version=~a" (lisp-implementation-version))' | ./abcl --noinform

I get something on the standard as expected. However, if I add --batch then nothing is printed -- i.e. when using FORMAT.

If I do

echo '(prog  (format nil "version=~a" (lisp-implementation-version)) (quit))' | ./abcl

only the prompt is printed, not the result.

That's because (format nil ...) prints to a string, not to *standard-output*. You want (format t ...) instead.

Bye Alessio

On 11 December 2010 02:41, Alessio Stalla alessiostalla@gmail.com wrote:

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If I do  echo '(prog  (format nil "version=~a" (lisp-implementation-version)) (quit))' | ./abcl only the prompt is printed, not the result.

That's because (format nil ...) prints to a string, not to *standard-output*. You want (format t ...) instead.

No, it looks like there may be a lingering flushing problem. Adding the (quit) seems to botch the print (there's no --batch, so everything the REPL prints should be printed), so that does seem like a flushing problem indeed.