From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2777 invoked from network); 26 Sep 2002 10:28:55 -0000 Received: from sunsite.dk (130.225.247.90) by ns1.primenet.com.au with SMTP; 26 Sep 2002 10:28:55 -0000 Received: (qmail 13528 invoked by alias); 26 Sep 2002 10:28:49 -0000 Mailing-List: contact zsh-workers-help@sunsite.dk; run by ezmlm Precedence: bulk X-No-Archive: yes X-Seq: 17736 Received: (qmail 13517 invoked from network); 26 Sep 2002 10:28:48 -0000 To: zsh-workers@sunsite.dk (Zsh hackers list) Subject: Re: history expansion In-reply-to: "Roman Neuhauser"'s message of "Thu, 26 Sep 2002 12:12:24 +0200." <20020926101224.GA30361@freepuppy.bellavista.cz> Date: Thu, 26 Sep 2002 11:28:19 +0100 Message-ID: <20465.1033036099@csr.com> From: Peter Stephenson Roman Neuhauser wrote: > not knowing the internals of the history expansion, what is the > probability of nested expansion appearing in zsh? It doesn't look *that* difficult, but it's not completely trivial (some of the state is currently kept in global variables) so it's a bit of work for a feature which only appeals to the few who like lines like !!:s/!!3/!-2:s,foo,bar,/ but if anyone thinks they're good at making code recursive it might be an interesting project. Your starting point is getsubsargs() and hdynread2() in hist.c. (I'm making the optimistic assumption that the character input mechanism is already robust enough to handle it.) -- Peter Stephenson Software Engineer CSR Ltd., Science Park, Milton Road, Cambridge, CB4 0WH, UK Tel: +44 (0)1223 692070 ********************************************************************** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer. **********************************************************************