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From: maart@cs.vu.nl (Maarten Litmaath)
Newsgroups: comp.editors
Subject: Re: Register Commands in Vi
Message-ID: <3312@solo1.cs.vu.nl>
Date: 20 Sep 89 19:09:47 GMT
References: <518@dcdwest.UUCP>
Organization: V.U. Informatica, Amsterdam, the Netherlands
Lines: 45

benson@dcdwest.UUCP (Peter Benson) writes:
\... I would like to
\position the cursor at the front of a file name, as in the "s"
\in system in
\
\.so system
\
\and have the command
\
\:n system
\
\be executed. [...]

map v ma:!:^V^M :t.^V^Mkc`a:e!^V^[ea ^V^[D^V^V"zdd@z

Explanation:

	ma		= mark the current position with `a'
	:!:^V^M		= this shell escape will force the buffer to be
	       ^	  written if it has been modified AND the option
	       space	  `autowrite' is set; all further modifications
			  due to the map are irrelevant and will be
			  discarded (see `e!' below)
			  the `:' command does nothing in sh and csh
			  the ^M (return) needs to be escaped with ^V, else
			  the map would be terminated
	:t.^V^M		= this "ex" command will put a copy of the current
			  line right below it (`yyp' seems to cause trouble)
	k		= upward one line (back to the original line)
	c`a:e!^V^[	= change till the mark `a'
			  just like ^M the escape ^[ needs to be escaped
	e		= go to the end of the next word (our filename)
	a ^V^[		= append a space, to make sure there's something to
			  delete (see `D')
	D		= delete the rest of the line
	^V^V"zdd	= delete the current line into register `z'
			  the `"' must be escaped upon the first READING of
			  the map, since it is the "ex" comment character
			  (NOTE: not necessary in some vi versions)
	@z		= execute the contents of register `z':

				:e!file^J
-- 
   creat(2) shouldn't have been create(2): |Maarten Litmaath @ VU Amsterdam:
      it shouldn't have existed at all.    |maart@cs.vu.nl, mcvax!botter!maart