Re: CC Mode 5.28 (C++); comment-indent-newline does not insert a comm ent delimiter after the new line.

[Martin Stjernholm]

Richard Stallman <address@hidden> wrote:

>     "Stefan Monnier" <monnier+gnu/address@hidden> wrote:
> 
>     > Right now, M-j does pretty much the same thing as the line breaking
>     > of do-auto-fill except for:
>     > 
>     > 1 - it doesn't obey comment-line-break-function
>     > 2 - it doesn't obey adaptive-fill-prefix
> 
> According to the doc string, the purpose of M-j is this:
> 
>     This command is intended for styles where you write a comment per line,
>     starting a new comment (and terminating it if necessary) on each line.
>     If you want to continue one comment across several lines, use C-j.
> 
> Whether that purpose is useful enough that we should continue to have
> a command for it, I am not sure.  If it is, we should not forget about it,
> If it is not, perhaps we should just eliminate M-j.

I'd say it isn't very useful in exactly that form, but there's a
similar form that is useful, and I (and also Stefan Monnier, if I'm
not mistaken) suggest that M-j is redefined to that form instead. It
has been discussed earlier in this thread, but in short:

Let M-j break the line as appropriate for continuing the comment text
on the next line, whether or not that means making a new comment for
it, indenting and/or inserting a comment continuation prefix on the
new line.

Note that this might well be different from C-j, even when the same
comment is continued. It also implies that the variable
comment-multi-line might still be considered obsolete, but for
different reasons than its docstring hints at.