Re: [Emacs-diffs] scratch/widen-less a4ba846: Replace prog-widen with consolidating widen calls

[Dmitry Gutov]

On 12/18/17 7:41 PM, Wedler, Christoph wrote:

> OK, then I'll keep the dynamic binding to make it work in Emacs-25, too.

But that branch checks for (boundp 'prog-indentation-context). Which got 
taken out of Emacs 25, didn't it?

> Actually, I build that branch only
>
>      Head:     widen-less Consolidate 'widen' calls
>      Merge:    origin/widen-less Consolidate 'widen' calls
>      Tag:      emacs-26.0.90 (351)

Not sure which tool's output this is.

> The build sequence was
>
>      ./autogen.sh
>      ./configure --with-ns --without-makeinfo --with-gnutls=no
>      make

Could you try with 'make bootstrap' instead of just 'make'?

> OK, ANTLR source have TAB length 4, the file is not even completly
> consistently indented with that, but the lines of interest are 46 to 51
> of Python/C/C.g of the antlr3 examples repo, as mentioned earlier,
> namely:
>
> @members {
>      def isTypeName(self, name):
>          for scope in reversed(self.Symbols_stack):
>              if name in scope.types:
>                  return True
>
>          return False
>
> }

It seems to work okay. Thanks.

> It looks strange to me that you neither get syntax highlighting
> (keywords "def", "self", "for", …, function name "isTypeName", ...)
> nor the indentation cycling for the lines starting with "for", "if",
> "return"

I don't get syntax highlighting there, but indentation works fine. I 
just needed to know which part of the example file to test.

> > > > Now to a mode with non-widening indentation function: emacs-lisp mode:
> > > > Consider the following code
> > > >        (defun foo ()
> > > >          (+ 1 3))
> > > >
> > > > I would assume that the indentation of line 2 does not change
> > > > when I narrow to line 2 - but Emacs-25.1.1 now deletes the first 2
> > > > spaces of line 2...  (yes; I also need to update to a newer Emacs)
> >
> > > Try out the widen-less branch!
> >
> > Ehem, still the same...

If 'make bootstrap' doesn't help, could you try a step-by-step 
instruction, or a video, or something?