From mboxrd@z Thu Jan  1 00:00:00 1970
From: ralph@inputplus.co.uk (Ralph Corderoy)
Date: Mon, 30 Oct 2017 00:55:07 +0000
Subject: [TUHS] basic tools / Universal Unix
In-Reply-To: <2962D014-8FF9-4E53-8000-EF49C49817E9@bitblocks.com>
References: <CAC20D2NNsM6jGGD_7=yXq=oUVrvD741Rt=B-Q4-F-xR5Nb-Fkw@mail.gmail.com>
 <2962D014-8FF9-4E53-8000-EF49C49817E9@bitblocks.com>
Message-ID: <20171030005507.D30C620202@orac.inputplus.co.uk>

Hi Bakul,

Regarding vi:
> As an example, you can map a key to do a sequence of operations but
> you you can’t then use it in conjunction with search to repeat them
> over a range of lines.

You can use tail recursion in the macro because a failed search causes
it to stop.  So `qqq' to start recording to register `q', and then
instantly stop recording, clearing it.  Then the real definition, ending
in an execution of the empty `q'.

    qq/4$^Ma2^[@qq

And finally an `@q' to kick off the recursion.

-- 
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy