bug#24671: java-mode confused by non-trivial generics

bug#24671: java-mode confused by non-trivial generics

[Daniel Colascione]

For the following code

    class Foo {
        public List<Class<? extends Bar<? extends Qux>>> getBars() {
            return null;
        }
    }

I expect the `<' and `>' to be assigned paren syntax, but they are not. Emacs
is latest master.

bug#24671: java-mode confused by non-trivial generics

[Lars Ingebrigtsen]

Daniel Colascione <dancol@dancol.org> writes:

> For the following code
>
>     class Foo {
>         public List<Class<? extends Bar<? extends Qux>>> getBars() {
>             return null;
>         }
>     }
>
> I expect the `<' and `>' to be assigned paren syntax, but they are not. Emacs
> is latest master.

When I try this in Emacs 27, the < and > characters are fontied the same
way as the parentheses in the example, so I'm guessing that this has
been fixed and is closing this bug report.  If you're still seeing this
problem, please reopen.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#24671: java-mode confused by non-trivial generics

[Alan Mackenzie]

Hello, Lars

In article <mailman.2400.1564236126.2688.bug-gnu-emacs@gnu.org> you wrote:
> Daniel Colascione <dancol@dancol.org> writes:

>> For the following code
>>
>>     class Foo {
>>         public List<Class<? extends Bar<? extends Qux>>> getBars() {
>>             return null;
>>         }
>>     }
>>
>> I expect the `<' and `>' to be assigned paren syntax, but they are not. Emacs
>> is latest master.

> When I try this in Emacs 27, the < and > characters are fontied the same
> way as the parentheses in the example, so I'm guessing that this has
> been fixed and is closing this bug report.  If you're still seeing this
> problem, please reopen.

I think the bug should be reopened: it was about the syntax on < and >
rather than the fontification.

If you put point in front of any of the <s, you should be able to
execute C-M-f, moving to the matching >.

This doesn't happen in the current scenario because the closing >s,
written without intervening spaces, get confused with the Java shift
right operator ">>>".  If you insert a space into that triplet, the
syntax comes back again.

This will be easy to fix.

> -- 
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no

-- 
Alan Mackenzie (Nuremberg, Germany).

bug#24671: java-mode confused by non-trivial generics

[Lars Ingebrigtsen]

Alan Mackenzie <acm@muc.de> writes:

> I think the bug should be reopened: it was about the syntax on < and >
> rather than the fontification.
>
> If you put point in front of any of the <s, you should be able to
> execute C-M-f, moving to the matching >.

Oh, I see; reopening.

> This doesn't happen in the current scenario because the closing >s,
> written without intervening spaces, get confused with the Java shift
> right operator ">>>".  If you insert a space into that triplet, the
> syntax comes back again.
>
> This will be easy to fix.

I bet.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#24671: java-mode confused by non-trivial generics

[Alan Mackenzie]

Hello, Lars and Daniel.

On Sat, Jul 27, 2019 at 17:11:23 +0200, Lars Ingebrigtsen wrote:
> Alan Mackenzie <acm@muc.de> writes:

> > I think the bug should be reopened: it was about the syntax on < and >
> > rather than the fontification.

> > If you put point in front of any of the <s, you should be able to
> > execute C-M-f, moving to the matching >.

> Oh, I see; reopening.

> > This doesn't happen in the current scenario because the closing >s,
> > written without intervening spaces, get confused with the Java shift
> > right operator ">>>".  If you insert a space into that triplet, the
> > syntax comes back again.

> > This will be easy to fix.

> I bet.

I've committed a fix to the master branch.  Maybe one or both of you
might want to try it out before the bug is closed.

> -- 
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no

-- 
Alan Mackenzie (Nuremberg, Germany).

bug#24671: java-mode confused by non-trivial generics

[Lars Ingebrigtsen]

Alan Mackenzie <acm@muc.de> writes:

> I've committed a fix to the master branch.  Maybe one or both of you
> might want to try it out before the bug is closed.

Thanks; I tried it out now, and it seems to work well for me, so I'm
closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no