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2024-06-16 21:59:42 +02:00
From spencer@lit.Princeton.EDU (S. Spencer Sun)
Subject: Re: A program to /* comment out */ automaticaly
Date: 22 Oct 92 03:50:26 GMT
Reply-To: spencer@phoenix.princeton.edu (S. Spencer Sun)
This doesn't strike me as being a shell question so I've crossposted to
c.u.misc and directed followups there.
In article <guy.719701506@tdsb-s>, guy@mais.hydro.qc.ca (Guy Harel) writes:
>I was always bothered by the tedious task of placing /*`s and */`s
>around lines of code, and always wondered why on earth haven`t such a
>facility ever been provided (maybe EMACS does this , I`m not sure).
>
>[other comments removed]
>
>#!/bin/csh
>
>exec awk '{ print "/* " $0 " */" }'
Why start another process?
Since you say you're using vi:
1. Move to start of block you want to comment out
2. Type ma (set mark a)
3. Move to end of block you want to comment out
4. issue
:'a,.s/^\(.*\)$/\/\* \1 \*\//
Voila. If you just want to do one line, just do step 4 and leave out
the 'a,. part. (Yes, I've tried this out just to be sure, but I may have
made a typo. If it doesn't work, someone will no doubt correct the typo)
Don't want to memorize this, or don't want to learn what's really going on
here so you can generalize to other useful things? Type it once and put
it in your .exrc.
map <keystroke> <sequence>
This line in $HOME/.exrc will replace <keystroke> with whatever key (if
you want, say, ^A, you have to hit ^V^A to insert the actual control
character) and <sequence> with the nasty-looking stuff above.
All of this assumes you WANT to comment out a large block this way. Why
not just do this? Guess it's a matter of preference.
/*
this is
some code
that I
want
commented
out
*/
much easier to un-comment later, too.
-----
sss/PU'94 Dept of CS (spencer@phoenix.princeton.edu)/JvNCnet (spencer@jvnc.net)
"I once believed in causes too / I had my pointless point of view / And life
went on no matter who was wrong or right..." [Billy Joel, "Angry Young Man"]
From bill@bilver.uucp (Bill Vermillion)
Subject: Re: A program to /* comment out */ automaticaly
Date: Thu, 22 Oct 1992 21:11:16 GMT
In article <1992Oct22.035026.25734@Princeton.EDU> spencer@phoenix.princeton.edu (S. Spencer Sun) writes:
>This doesn't strike me as being a shell question so I've crossposted to
>c.u.misc and directed followups there.
>In article <guy.719701506@tdsb-s>, guy@mais.hydro.qc.ca (Guy Harel) writes:
>>I was always bothered by the tedious task of placing /*`s and */`s
>>around lines of code, and always wondered why on earth haven`t such a
>>facility ever been provided (maybe EMACS does this , I`m not sure).
>>[other comments removed]
>>#!/bin/csh
D>>
>>exec awk '{ print "/* " $0 " */" }'
>Why start another process?
>Since you say you're using vi:
>1. Move to start of block you want to comment out
>2. Type ma (set mark a)
>3. Move to end of block you want to comment out
>4. issue
> :'a,.s/^\(.*\)$/\/\* \1 \*\//
>Don't want to memorize this, or don't want to learn what's really going on
>here so you can generalize to other useful things? Type it once and put
>it in your .exrc.
>map <keystroke> <sequence>
>This line in $HOME/.exrc will replace <keystroke> with whatever key (if
>you want, say, ^A, you have to hit ^V^A to insert the actual control
>character) and <sequence> with the nasty-looking stuff above.
Gee - this one looks easier to type. ;-)
map ^X ^i/* ^[A */^[^
And to comment out a line just to
/* to anywhere in that line and type control x */
just like that!
--
Bill Vermillion - bill@bilver.oau.org bill.vermillion@oau.org
- bill@bilver.uucp
- ..!{peora|ge-dab|tous|tarpit}!bilver!bill
From martelli@cadlab.sublink.org (Alex Martelli)
Subject: Re: VI??? GROSS!
Date: 17 Nov 92 08:21:34 GMT
wolff@inf.fu-berlin.de (Thomas Wolff) writes:
:Most repliers to my posting seem to be that well accustomed to the fact
:that vi is a line editor that they didn't see my point when I wrote
:"arbitrary (!) block of text" (well, maybe "block" was misleading). This
:is not a block of lines (which is the unit of most vi operations) and
:since I referred to "elementary text editing tasks" I didn't mean columns
:either. Suppose I have the lines
: word1 word2 word1
: word3 word4 word3
:and I need the text from "word2 " up to "word4" (assume it's a sentence)
:to be copied or moved elsewhere.If an editor cannot do this with a
:simple command sequence (and without the search trick burdening me with
:the task of counting the occurences of the word following my sentence
:within my sentence, if it can be done that way at all), I just do not
:call it a text editor.
You don't seem to be READING the responses to your post!
1. Place the cursor on the leading "w" of "word2".
(by any means whatsoever).
2. Press: ma
You have thus placed the marker named a on that point.
3. Place the cursor on the final "4" of "word4".
(again, by any means whatsoever).
4. Press: mz
You have thus placed the marker named z on that point.
(note that you have 26 marks at your disposal, named a to z).
5. Press: `a
You will move to the EXACT point of mark a, the leading w of "word2".
Note that this is a BACKquote, also known as GRAVE ACCENT, *NOT* an
apostrophe. The apostrophe would use the mark for line-oriented
operation; the backquote uses it for character-stream operation.
If you don't like this key assignment place a "map ' `" in your
.exrc, and the apostrophe will start working in charstream too.
6. To COPY, press: "ay`z
You have thus yanked the EXACT block of text you're interested in,
into named-buffer a. Note that a BACKQUOTE is needed here, too,
before the z, unless you've mapped things to work differently.
(You have 26 named buffers at your disposal, named a to z).
(If you *already* had text inside named-buffer a, and you wanted
to APPEND these words to that, you could do this by pressing:
"Ay`z - the uppercasing of the buffer name is the trick. By using
the buffername in lowercase, the previous contents of the buffer
are, instead, replaced).
6bis. Or, to MOVE, press: "ad`z
You have thus *deleted* the exact block of text into the named buffer.
7. Now place the cursor wherever you wanted to place the text.
(yet again, by any means whatsoever).
8. Press: "ap
You have put named-buffer a's contents right after the cursorpoint.
Or, Press: "aP to put the same contents right BEFORE the cursorpoint.
Note that in either case the contents go within the textstream at
the cursorpoint, as they have been yanked or deleted as textstream,
not as whole lines.
I don't claim this process is perfect. No immediate visual feedback
is available of where marks are, or what you have yanked. The use
of both lower and upper case for commands, which are not echoed, is
at first confusing, although the mnemonic relationships make it
rather commodious to use after a while (p-ut after, P-ut before;
"a to overwrite buffer a, "A to append to it; and so on).
I *DO* claim that you have flamed the vi editor, and by implication
us, its users, WITHOUT having taken the trouble to learn it AT ALL!
Such characterstream operation, and the backquote movement-command
in particular, are not some sort of "exoterica", but, rather quite
fundamental usage modes of this program!
--
Email: martelli@cadlab.sublink.org Phone: ++39 (51) 6130360
CAD.LAB s.p.a., v. Ronzani 7/29, Casalecchio, Italia Fax: ++39 (51) 6130294
From jxh@math.ksu.edu (James C. Hu)
Subject: Re: Centering lines in vi
Date: 28 Jan 1993 16:43:08 -0600
pietro@nova.bellcore.com (Pietro Manzoni) writes:
>Hi,
>is there anybody who knows whether there is a :map command to center a
>single line in VI?
There is probably already a package that does this, but I'd put this in
as an example on how to build useful simple filters for vi. At the end
of this post is a simple program that centers text. Compile it and
install it in ~/bin/center, or whatever.
Then, make the following map:
:map == !!center^M
(the ^M represents the result of hitting CTRL-V followed by CTRL-M)
Presto, you have a pseudo center "operator". Now you can do a == to
center a single line, or a 5== to center the next 5 lines.
Enjoy.
/* File: center.c
* Creator: James C. Hu (sirius@matt.ksu.ksu.edu)
*
* Description:
* Centers lines of input.
*
* Caveats are that lines cannot be longer than the specified
* centering line length, if they are, then they may be truncated,
* and that the default centering line length is 72.
*
* Copyright:
* This program is placed into the public doman.
*
* Date Started: Thu Jan 28 15:33:44 CST 1993
*
* Change Log:
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static int length = 72;
static char *buf;
static char format[10]; /* should be enough */
int main(int argc, char *argv[])
{
int i,n,buflen;
char *p;
switch(argc) {
case 2:
length = atoi(argv[1]);
if (length == 0) length = 72;
case 1:
break;
default:
fprintf(stderr, "usage: center [width]");
exit(1);
}
buf = malloc((length + 2) * sizeof(char));
while (fgets(buf, length+2, stdin) != NULL) {
if ((p = strrchr(buf, '\n')) != NULL) *p = '\0';
while (isspace(*buf)) buf++;
buflen = strlen(buf);
sprintf(format, "%%%ds\n", length/2 + (buflen+1)/2);
printf(format, buf);
}
return 0;
}
--
James C. Hu (jxh@math.ksu.edu), 1804 Denholm Dr., Manhattan, KS 66502
I speak for me, the whole me, and nothing but for me. So help me me.
From jxh@math.ksu.edu (James C. Hu)
Subject: Re: Centering lines in vi
Date: 29 Jan 1993 01:40:31 -0600
jxh@math.ksu.edu (Me) wrotes:
>There is probably already a package that does this, but I'd put this in
>as an example on how to build useful simple filters for vi. At the end
>of this post is a simple program that centers text. Compile it and
>install it in ~/bin/center, or whatever.
>Then, make the following map:
>:map == !!center^M
>(the ^M represents the result of hitting CTRL-V followed by CTRL-M)
>Presto, you have a pseudo center "operator". Now you can do a == to
>center a single line, or a 5== to center the next 5 lines.
Whups, major bug in my center program. Here's a fixed version.
/* File: center.c
* Creator: James C. Hu (sirius@matt.ksu.ksu.edu)
*
* Description:
* Centers lines of input.
*
* Caveats are that lines cannot be longer than the specified
* centering line length, if they are, then they may be truncated,
* and that the default centering line length is 72.
*
* Copyright:
* This program is placed into the public doman.
*
* Date Started: Thu Jan 28 15:33:44 CST 1993
*
* Change Log:
* Date: Fri Jan 29 01:36:57 CST 1993
* Fixed a bug in the inner loop: buf would creep up to the end of
* its allocated space.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static int length = 72;
static char *buf;
int main(int argc, char *argv[])
{
char format[10]; /* should be enough */
int buflen;
char *p;
switch(argc) {
case 2:
length = atoi(argv[1]);
if (length == 0) length = 72;
case 1:
break;
default:
fprintf(stderr, "usage: center [width]");
exit(1);
}
buf = malloc((length + 2) * sizeof(char));
while (fgets(buf, length+2, stdin) != NULL) {
if ((p = strrchr(buf, '\n')) != NULL) *p = '\0';
p = buf;
while (isspace(*p)) p++;
buflen = strlen(p);
sprintf(format, "%%%ds\n", (length + buflen)/2);
printf(format, p);
}
return 0;
}
--
James C. Hu (jxh@math.ksu.edu), 1804 Denholm Dr., Manhattan, KS 66502
I speak for me, the whole me, and nothing but for me. So help me me.
From lind@eng.umd.edu (Charles A. Lind)
Subject: vi? CAPS --> small
Date: 3 Feb 1993 13:29:46 GMT
Hi,
Within vi is there a way to change all capital letters to small
letters, or vice versa. Is this possible?
Thanks
Charles
lind@eng.umd.edu
--
------------------------------------------------------
Charles Lind -- lind@eng.umd.edu
Department of Aerospace Engineering
University of MD, College Park, MD 20742
From edwin@integow.integrity.nl (Edwin Koedam)
Subject: Re: vi? CAPS --> small
Date: 4 Feb 93 08:10:50 GMT
Charles writes:
:
: Hi,
: Within vi is there a way to change all capital letters to small
: letters, or vice versa. Is this possible?
:
: Thanks
:
: Charles
: lind@eng.umd.edu
To change capital letters into small ones, just use:
:%s/./\l&/g
To change small letters into capital ones, just use:
:%s/./\u&/g
\l& means: Change the found character to lowercase.
\u& means: Change the found character to uppercase.
Hope this helps
Edwin
From hansm@cs.kun.nl (Hans Mulder)
Subject: Re: vi? CAPS --> small
Date: Thu, 4 Feb 1993 12:00:02 GMT
In <1kohcaINNk41@mojo.eng.umd.edu> lind@eng.umd.edu (Charles A. Lind) writes:
> Within vi is there a way to change all capital letters to small
>letters, or vice versa. Is this possible?
To downcase everything:
:%s/.*/\L&
To upcase everything:
:%s/.*/\U&
HansM
From jmd@bealfeirste (John Downey)
Subject: Re: vi: Including blank line in search string?
Date: 4 Feb 93 13:10:28 GMT
Reply-To: jmd@muppet.bt.co.uk
J R Evans (ngse18@castle.ed.ac.uk) wrote:
+---------
|
| I work on a range of different machines, mostly using vi on Unix systems,
| for the usual reason that it's always available. One trick which has
| always escaped me is how to search for a string which extends over a
| line end (indeed, this seems to be a problem for all the standard
| Unix search utilities). As an example of the requirement, I was
| looking through my mail folders for the "start of message" sequence --
| "<blank line>From ". Is there a solution within (generic) vi?
|
| Russ
|
+---------
You can't search for a pattern that crosses a line boundary; but you
can specify a match at the beginning of a line, by typing:
/^From /
(The final '/' isn't actually needed, but I've put it in to show the
preceding space.) This will solve the particular problem you mention
because most mail transfer agents will change a line starting with
"From" in the body of a message to ">From" anyway.
Regards,
John Downey
Work:
Paper mail: MLB 1/21
BT Research Labs
Martlesham Heath, Ipswich, Suffolk, England
Mail: jmd@cyclone.bt.co.uk
Telephone: (UK) 0473 649626
(international) +44 473 649626
Home:
Paper mail: 55a Sutherland Sq., London SE17, England
Telephone: (UK) 071 708 1299
(international) +44 71 708 1299
From jmd@bealfeirste (John Downey)
Subject: Re: replace <character> with CR?
Date: 4 Feb 93 14:54:14 GMT
Reply-To: jmd@muppet.bt.co.uk
Charles A. Lind (lind@eng.umd.edu) wrote:
+---------
|
| I have a line of words in the form:
|
| joe, pete, ron, mary, rich, nick, ted
|
| and I would like to change all the ',' to <CR> so that
| I get
|
| joe
| pete
| ron
| mary
| rich
| nick
| ted
|
| I guess something of the form
|
| :1,$ s/, /<CR>/g
|
| is what I am looking for.
|
| In general I guess I am looking for the representation for <CR>,
| <TAB>, etc. I looked in cs.uwp.edu but I could not find this.
|
| Thanks
|
| Charles
|
+---------
In vi, type
:s/, */^M/g
You have to type control-V followed by control-M to get the ^M. An
ASCII newline is actually control-J, not control-M, but vi won't let
you insert control-J into a command line. It's a bit illogical.
In xvi, type
!!sed 's/, */\^J/g'
You have to type control-V followed by control-J to get the ^J.
Regards,
John Downey
Work:
Paper mail: MLB 1/21
BT Research Labs
Martlesham Heath, Ipswich, Suffolk, England
Mail: jmd@cyclone.bt.co.uk
Telephone: (UK) 0473 649626
(international) +44 473 649626
Home:
Paper mail: 55a Sutherland Sq., London SE17, England
Telephone: (UK) 071 708 1299
(international) +44 71 708 1299
From davisonj@en.ecn.purdue.edu (John M Davison)
Subject: vi questions. HELP!
Date: Mon, 1 Feb 93 14:41:02 GMT
Help! The following vi questions are plaguing me:
1. Is there a way to do the equivalent of
:s/<tab>/<space>/g
without it failing (i.e. stopping the macro in progress) if no tabs are
found?
2. Is there a way to encode the "|" character in a "map" command? Presently,
when I attempt to include the "|" character in a "map" command, vi ignores
the "|" and everything else that follows it in the line, as if it were a
trailing comment delimiter.
3. Is there any standard, terminal-independent way of mapping sequences
initiated by function keys, i.e. "<F1> k"? (My current way of mapping these
sequences is on a terminal-by-terminal basis. No mnemonics, just raw
sequences.)
I want to map function keys, application keypad keys, and arrow keys in vi,
but I don't know of any non-terminal-specific mnemonics that I can use for
the mappings. Are there? I don't see anything in the ex/vi references I've
looked at.
The following .exrc (see end of this article) works, but only for a
vt100-series terminal. How can I make this work more universally (i.e. with
WYSEs and other terminals)? Also, with an LK-201 keyboard (DEC vt2xx and
up), how do I specify the PF keys versus the F keys? Is there any standard
way of doing it, or do people just tweak their termcap/terminfo entries as
they go along?
4. What sequences of ASCII and non-ASCII (8-bit) characters can and cannot be
mapped by the "map" function? It seems that any sequence that contains
either a space or a LF character, for example, cannot be mapped.
5. Is there any facility in vi that allows one to map a key, in append mode, to
something which, unlike a macro, can invoke some user-defined algorithm
complete with conditional branches, loops, etc.? I am looking for something
that would do the vi equivalent of mapping a key to a TPU function (for
those familiar with Digital Equipment Corporation's TPU).
6. Is there a way to make the "autoindent" feature put in spaces instead of
tabs?
Coherent answers to any and all of these questions are appreciated!
I'll post a summary if someone wants me to. In the meantime, here is my .exrc
file (if anyone is interested) and, after that, a file containing function key
sequences for various terminals and terminal emulators:
-------------------------------------------------------------------------------
begin 0 .exrc.Z
M'YV0(@(*'$BPH,&#"!,J7"A"@0@0$"-&3`(B3!L09]ZD<7,&!)TW(.#4H0-B
MSILV94"(>>.F3`LT9<*0*4,&Q)B3*-W0F0,"IIR484C2@>GQ#1P0;\QX)`JB
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`
end
-------------------------------------------------------------------------------
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`
end
-------------------------------------------------------------------------------
--
John Davison, davisonj@ecn.purdue.edu
"The next time you start to say, 'Purdue isn't as racist as some other places,'
bite your tongue. I've lived in the South [U.S.] all my life, and I have
never encountered as much racism there as I have here." -- Sumi Rebeiro
From dp80027@data3.sbil.co.uk (David Price)
Subject: Re: How to add blank lines in vi?
Reply-To: dp80027@data3.sbil.co.uk
Date: Fri, 5 Feb 93 08:27:17 GMT
In article 19086@newssun.med.miami.edu, emansell@miasun.med.miami.edu (Eric A. Mansell) writes:
>So, let's say you have a fairly long file and
>you want to globally add a blank line immediately
>before every line that begins with a ">" character.
>
Try the following:
:%s/^>/^M>/
where '^M' is generated by entering CONTROL V followed by CONTROL M and
'^>' is actually a caret followed by a right chevron.
Cheers,
Dave P.
From ciacovel@telesciences.com (Chris D Iacovelli)
Subject: Re: replace <character> with CR?
Date: Fri, 5 Feb 1993 15:51:23 GMT
In article <1klsekINNk9k@mojo.eng.umd.edu> lind@eng.umd.edu (Charles A. Lind) writes:
>
>Hi,
> I have a line of words in the form:
>
> joe, pete, ron, mary, rich, nick, ted
>
> and I would like to change all the ',' to <CR> so that
> I get
>
> joe
> pete
> ron
> mary
> rich
> nick
> ted
>
>I guess something of the form
>
> :1,$ s/, /<CR>/g
>
>is what I am looking for.
>
>In general I guess I am looking for the representation for <CR>,
><TAB>, etc. I looked in cs.uwp.edu but I could not find this.
>
>Thanks
>
>Charles
>--
>------------------------------------------------------
> Charles Lind -- lind@eng.umd.edu
> Department of Aerospace Engineering
> University of MD, College Park, MD 20742
How about this:
:1,$s/, /^V^M/g
^^^^
control-v then control-m
Works for me.
Chris.
================= VI it is not just an editor, it is a number. =================
From zz1bb@impending.ucsd.edu (Barry Brown)
Subject: Re: vi? CAPS --> small
Date: 5 Feb 93 16:34:26 GMT
In <1663@integow.integrity.nl> edwin@integow.integrity.nl (Edwin Koedam) writes:
>Charles writes:
>: Within vi is there a way to change all capital letters to small
>: letters, or vice versa. Is this possible?
>To change capital letters into small ones, just use:
> :%s/./\l&/g
>To change small letters into capital ones, just use:
> :%s/./\u&/g
Pressing tilde (~) over a character will change its case and advance the
cursor to the next character. Just hold down the tilde key and swoop over a
few sentences to change all the letters to the opposite case.
--
Barry E. Brown -- \ UCSD Instructional Computing Center
bebrown@ucsd.{edu,uucp,bitnet} \ Anime Stuff FTP Server administrator
Somewhere in San Diego, CA..... \ (ftp network.ucsd.edu [132.239.254.203])
"Stimpy, sometimes your wealth of ignorance astounds me." -- Ren
From ciacovel@telesciences.com (Chris D Iacovelli)
Subject: Re: Why !!
Date: Sun, 7 Feb 1993 15:27:41 GMT
In article <1993Feb4.003728.13763@dragon.acadiau.ca> 911288c@dragon.acadiau.ca (EDwin Chung) writes:
>Dear friend,
>
> I still don't find anything work for centre text
> in vi !!
> Any help ??
> EDwin
>
EDwin,
Try adding this to your .exrc file:
------- snip --------
map [c >>d0$maKV{{\q
map K 80a
map V 80|D
map {{ `a
map \q lxd0:s/ / /g$p
------- snip --------
It works for me.
cdi.
=============================
Christopher D. Iacovelli
Member, Technical Staff
TeleSciences CO Systems
Moorestown, NJ 08057-1177 USA
ciacovel@telesciences.com
=============================
From popaul@cs.mcgill.ca (Paul TERRAY)
Subject: Re: vi? CAPS --> small
Date: 10 Feb 93 20:36:13 GMT
Reply-To: popaul@binkley.cs.mcgill.ca
> In <1663@integow.integrity.nl> edwin@integow.integrity.nl (Edwin Koedam)
writes:
> >To change small letters into capital ones, just use:
> > :%s/./\u&/g
For more detail, \u modifier just change the first letter of the match.
So if you want all word to begin by a upper case letter:
:%s/[a-zA-Z]*/\u&/g
otherwise, you can use \U modifier like
:%s/.*/\U&/g
will change everything to upper case.
Paul
From nh@cbnewsg.cb.att.com (nicholas.hounsome)
Subject: Re: VI with tags stack feature
Date: Fri, 12 Feb 1993 11:32:29 GMT
>From article <1993Feb11.190457.13940@bnr.ca>, by mschee@bcarh600.bnr.ca (Michael SamChee):
> Does any one have access or know of any version of VI for
> HP workstations, that has the 'tags stack' feature ?
>
> ie, you can invoke tags recursively and be able to
> pop back to the previously invoked file.
>
> Thanks very much in advance,
> Michael.
elvis has tagstack and I believe that it is supposed to work
on HP.
From watts@cs.scarolina.edu (Chris Watts)
Subject: Changing case of a word....
Date: 12 Feb 93 02:07:37 GMT
Could anyone out there tell me how to change the case of a single word to all
upper case or all lower case. I would like to do this for a single word not
all the words in the document. I would appreciate any feedback. Thanks.
Chris
From dattier@genesis.MCS.COM (DWT)
Subject: Re: ctrl-d in vi's insert mode
Date: 9 Mar 1993 16:04:47 -0600
Reply-To: dattier@genesis.mcs.com (David W. Tamkin)
eleleetk@nuscc.nus.sg (Teng-Kiat Lee) wrote in
<1993Mar9.041852.13666@nuscc.nus.sg>:
| I have a problem getting one of the 'standard' vi macro to
| work. The macro works in insert mode and it is supposed to
| give me a switch structure when I type sw'. The (for tabbing
| one 'sw') works but the (for deleting one 'sw') didn't. It
| seems like all the macros defined in the .exrc file with the
| didn't work as planned. Has any one any idea how this can
| be corrected? I am quite sure I did the right macro. The macro
| in question is given below:
| map! sw' switch () {^M^Tcase : /**/^M^Tbreak;^M^D^D}
| p.s: I did a manual mapping while in vi and it worked.
Now there is a big clue; commands in .exrc can get rescanned and special
characters in them may need extra escaping that they don't need if you
define a mapping or map!pinFrom dattier@ddsw1.mcs.com (David W. Tamkin)
Subject: Re: set nu
Date: Fri, 29 May 1992 02:25:12 GMT
[Please post follow-ups to comp.editors.]
wiggins@osiris.cso.uiuc.edu (Don Wiggins) wrote in
<Boz3sw.LK0@news.cso.uiuc.edu> in comp.unix.questions:
| Haven't been able to find this anywhere. In vi, ":set nu" numbers the lines
| in the file. However, I have never been able to figure out how to
| unset this feature, short of getting out of the file and getting back in.
:set nonu
Here's a hint. In vi, ":set" displays any options you have changed from the
defaults, but ":set all" displays the current states of ALL options. If you
do ":set all" before ":set nu" you will see "nonumber" in the listing. After
":set nu," ":set" and ":set all" both include "number". After ":set nonu,"
":set all" has "nonumber" in it again, and "number" is gone from ":set."
So if you want to know how to undo an option, look at :set all before you
change it; then you'll see how to change it back. Generally, if an option is
a