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To: zsh-users@zsh.org
From: Scott Frazer <frazer.scott@gmail.com>
Subject: Re: Interactive search on the command line?
Date: Fri, 4 Dec 2015 15:56:45 -0500
Message-ID: <5661FE0D.7000604@gmail.com>
References: <20151126080400.GA20074@linux.vnet.ibm.com>
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In-Reply-To: <151203165950.ZM13362@torch.brasslantern.com>

On 12/3/15 7:59 PM, Bart Schaefer wrote:
> On Dec 3, 11:39pm, Daniel Shahaf wrote:
> }
> } So, you could do something like this (using the (b::) subscript flag as
> } well):
> }
> }     % () {
> }         local haystack="$1"
> }         local needle="a"
> }         integer idx
> }         while (( idx = ${haystack[(ib:idx+1:)${needle}]} ))
> }               (( idx <= $#haystack ))
> }         do
> }           print -r - $haystack[idx,idx+$#needle-1]
> }         done
> }       } foobar
> }     a
> }     %
>
> This example might be a little clearer if we show the index where the
> match was found and use a match pattern longer than one character:
>
> % () {
>      local haystack=$1 needle=$2
>      integer idx
>      while idx=${haystack[(ib:idx+1:)$needle]}
> 	  (( idx <= $#haystack ))
>      do
>        print -r - $idx $haystack[idx,idx+$#needle-1]
>      done
>    } foobar 'o??'
> 2 oob
> 3 oba
> %
>
> (I also removed all redundant quotes and braces, since the original
> would only work in native zsh emulation anyway.)
>

Oh, it's a reverse lookup instead of walking through the entire
BUFFER.  Neat!  Code updated.

Scott