Re: [Manuel Serrano <address@hidden>] Re: flyspell before and after-string

[Stephen J. Turnbull]

>>>>> "Manuel" == Manuel Serrano <address@hidden> writes:

    Manuel> To my opinion this is cumbersome (most likely I miss
    Manuel> understand the correct way to use overlay...).

Emacs 21's Lispref describes this property for overlays:

------------------------------------------------------------------------
@item evaporate
@kindex evaporate @r{(overlay property)}
If this property is address@hidden, the overlay is deleted automatically
if it ever becomes empty (i.e., if it spans no characters).
------------------------------------------------------------------------

According to etc/ONEWS this was introduced in 19.29, so you can
probably rely on it even for very old Emacsen.

-- 
Institute of Policy and Planning Sciences     http://turnbull.sk.tsukuba.ac.jp
University of Tsukuba                    Tennodai 1-1-1 Tsukuba 305-8573 JAPAN
              Don't ask how you can "do" free software business;
              ask what your business can "do for" free software.