On 18.12.2012, at 18:56, Achim Gratz <strom...@nexgo.de> wrote: > Carsten Dominik writes: >> Well this is very safe - but if you have to assume that every elisp >> command does change match data behind your back, you would have to >> create a lot of extra code. > > Stefan Monnier advises the opposite (quote from > http://article.gmane.org/gmane.emacs.bugs/68688 ): > > --8<---------------cut here---------------start------------->8--- >> Okay. On second though: it wouldn't be very useful to use the match >> data set by these functions. Why not save the match-data here once so >> that no caller has to ever worry about it? Is there a general policy >> that this kinda thing shouldn't be done? > > Yes, the general policy is: all functions should be presumed to trash > the match-data, except for a very few exceptions. > --8<---------------cut here---------------end--------------->8---
I am sure that Stefan would consider backward-delete-charater such an exception, if you ask him directly. - Carsten > > > Regards, > Achim. > -- > +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ > > SD adaptation for Waldorf rackAttack V1.04R1: > http://Synth.Stromeko.net/Downloads.html#WaldorfSDada > >
