Re: define-syntax can only be used with local variables

[Damien Mattei <damien.mattei@gmail.com>]

i know nothing ,sorry for the typos

On Tue, Sep 14, 2021 at 7:58 PM Damien Mattei <damien.mattei@gmail.com>
wrote:

> hello Per,
> it is strange when downloading source and trying to compile it with same
> openjdk 16 than the one use by binary i got two errors, the first one being:
> javac -d . -classpath ".:.:$CLASSPATH" -g @tmp-sources1.list
> ./gnu/lists/CharSeq.java:11: error: types CharSequence and Sequence<E> are
> incompatible;
> it could be helpful to understand why before thinking to a problem of
> hygiene because all is running well in kawa-2.1, i admit it is old and i do
> nothing about what happen between those long times....
> Damien
>
> On Tue, Sep 14, 2021 at 7:27 PM Per Bothner <per@bothner.com> wrote:
>
>>
>>
>> On 9/10/21 12:33 AM, phiroc--- via Kawa wrote:
>> > Hello,
>> > in the below code, nil! and nil2! only set variables values to '() and
>> '(0) when such variables are local (let).
>>
>> I'm guessing (without having tested it) that the restriction isn't local
>> variables
>> but lexical vs dynamic variables.  I.e. it is likely that module-level
>> (library-level)
>> variables would also work.
>>
>> Probably a problem with macro hygiene.  Though it's weird that it behaves
>> differently on
>> different systems.  Possibly different Java versionor different Kawa
>> versions (though
>> I don't recall changing anything in this area in a while).
>>
>> Could be a nice exercise to figure out for someone who
>> wants to understand how Kawa macro hygiene works.
>> --
>>         --Per Bothner
>> per@bothner.com   http://per.bothner.com/
>>
>