From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-return-33444-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 26797 invoked by alias); 12 Oct 2014 17:36:04 -0000
Mailing-List: contact zsh-workers-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Workers List <zsh-workers.zsh.org>
List-Post: <mailto:zsh-workers@zsh.org>
List-Help: <mailto:zsh-workers-help@zsh.org>
X-Seq: 33444
Received: (qmail 20961 invoked from network); 12 Oct 2014 17:35:50 -0000
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE
	autolearn=ham version=3.3.2
X-Originating-IP: [80.3.229.105]
X-Spam: 0
X-Authority: v=2.1 cv=RcseCjdv c=1 sm=1 tr=0 a=uz1KDxDNIq33yePw376BBA==:117
 a=uz1KDxDNIq33yePw376BBA==:17 a=NLZqzBF-AAAA:8 a=uObrxnre4hsA:10
 a=kj9zAlcOel0A:10 a=BrDiTsk0AAAA:8 a=dRiX0t1w1PBvmQ6q5MsA:9 a=CjuIK1q_8ugA:10
 a=-hJg1tCh9CgA:10
Date: Sun, 12 Oct 2014 18:35:47 +0100
From: Peter Stephenson <p.w.stephenson@ntlworld.com>
To: Zsh workers <zsh-workers@zsh.org>
Subject: Re: bug with completion in quotes
Message-ID: <20141012183547.707f1818@pws-pc.ntlworld.com>
In-Reply-To: <13524.1413067029@thecus.kiddle.eu>
References: <13524.1413067029@thecus.kiddle.eu>
X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.7; x86_64-redhat-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit

On Sun, 12 Oct 2014 00:37:09 +0200
Oliver Kiddle <okiddle@yahoo.co.uk> wrote:
> Compiled with --enable-zsh-debug, I get bugs listed when completing
> inside $' style quotes whenever there's stuff after the cursor:
> 
> <tab> appears at cursor position
> 
> % : $'<tab>x
> utils.c:5893: BUG: unterminated $' substitution
> % : $'<tab>x'
> zle_tricky.c:666: BUG: 0 <= wb <= zlemetacs <= we is not true!
> 
> The line containing the first message was added in workers/22026 from
> about 2006.

This code is particularly horrible.  2006 is about the last time I
remember looking at it and giving up.  However, most of the really nasty
problems we're with nested quotes e.g. where a quoted argument to a
shell or scripting language itself contained quotes --- which I'm not
sure we whould be trying to do internally anyway.  One set of quotes is
just about tractable.

The chief suspect is set_comp_sep() --- it's very brittle because it's
interacting with all sorts of different parts of the shell in ad hoc
ways.

pws