Re: Lisp primitives and their calling of the change hooks

[Alan Mackenzie]

Hello, Stefan.

On Sat, Jan 06, 2018 at 10:51:30 -0500, Stefan Monnier wrote:
> > I've found a discrepancy.  Just one.  In (transpose-regions 1 10 11 20),
> > the hook calls are, in order, ((1 10) (11 20) (1 20 19)).  The two
> > consecutive b-c-f's happen when the two regions are of equal size and
> > non-contiguous.

> Sounds like a bug alright.

> > The cause of this is not hard to find: in Ftranspose_region, editfns.c
> > L5204, there are two calls to modify_text on consecutive lines.  This
> > seems to be some sort of optimisation.  It is not done elsewhere in
> > Ftranspose_region.  I dare say this could be fixed easily.

> Feel free to fix it (on master).

Done.

[ .... ]

>         Stefan

-- 
Alan Mackenzie (Nuremberg, Germany).