• From: ht@xxxxxxxxxxxx (Henry S. Thompson)
• To: Richard Salz <rsalz@xxxxxxxxxx>
• Date: Mon, 28 Aug 2006 14:06:40 +0100

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Richard Salz writes:

> Folks interested in playing around with tagging ideas might want to
> recall what Interlisp did.  A closing ] matches back to an opening
> [, or all the way to the toplevel if no match is found.

Not quite: A close ] matches all open (, but can be stopped short by
an open [.  Open [ were rarely if ever used, but close ] were very
useful, e.g. at the end of a define:

(define foo
 (lambda (x)
   (cond ((eq x 3)(f x))
         (t (y x]

where that ] saves, wait for it, _four_ keystrokes -- one ] instead of
five )!

> I don't believe it ever got widespread acceptance in the Lisp
> community.

Outside Interlisp, true AFAIK.  Inside Interlisp, it saw a fair amount
of use, IIRC.

ht
- -- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
    2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
            Fax: (44) 131 650-4587, e-mail: ht@i...
                   URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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• References:
  • Re: Generic XML Tag Closer </> (GXTC)
    • From: Richard Salz