[vox-tech] serendipity with vim

Fri, 2 Apr 2004 10:00:42 -0800 (PST)

Here:

   :%s/pattern//g

   % means "for each line"
   s means "replace"
   g means "for all occurrences in that line"

So without %, it'll replace all occurrences of "pattern" on the line
you're on.  With % but without g, it'll replace the first occurrence of
"pattern" for each line for the entire file.  Without % and without g,
it'll replace the first occurrence of "pattern" only on the line you're
on.

Also... instead of %, you can specify the line range inside brackets using
line numbers (kind of a hassle), or you can select the range you want via
Ctrl-v before typing ":s/pattern//g" and Vim will figure out the line
range by itself (really slick).

-Mark

On Fri, 2 Apr 2004, Ken Bloom wrote:

> In sed, one can delete every line matching a pattern with the command
> "/pattern/d". In vi, using the analagous command ":/pattern/d" only deletes
> the first line that matches the pattern. How do you delete all the lines
> that match the pattern? ":g/pattern/d"   (:g[lobal] lets you apply an ex
> command to every line matching a pattern)
>
> On 2004.04.02 06:16, Peter Jay Salzman wrote:
> > heh.  at 6:15 in the morning, it blew my mind.  it took a few seconds to
> > register what was going on.
> >
> > if anybody has any vim tips they'd like to share, i'd love to see a
> > thread of people's favorite vim tricks.
> >
> > here's another one i learned just recently:
> >
> >
> > 1 one
> > 2 two
> > 3 three
> > 4 four
> > 5 five
> > 6 six
> > 7 seven
> > 8 eight
> > 9 nine
> >
> > use line highlighting (shift v) and highlight lines 4, 5, and 6.
> > type "zf".
> > you've now "folded" lines 2, 3, 4, 5, and 6:
> >
> > 1 one
> > +--  5 lines: 2----------------------------------------------------
> > 7 seven
> > 8 eight
> > 9 nine
> >
> > now use line highlighting to to highlight the first 4 lines.
> > type "zf"
> > you've now folded the first four line:
> >
> > +--  8 lines: 1----------------------------------------------------
> > 9 nine
> >
> > place the cursor somewhere on the fold.
> > type "zo" to unfold:
> >
> > 1 one
> > +--  5 lines: 2----------------------------------------------------
> > 7 seven
> > 8 eight
> > 9 nine
> >
> > place the cursor somewhere on the fold.
> > type "zo" to unfold again:
> >
> > 1 one
> > 2 two
> > 3 three
> > 4 four
> > 5 five
> > 6 six
> > 7 seven
> > 8 eight
> > 9 nine
> >
> >
> > really great for programming.  one of the uses is when i'm editing a
> > function and need to see another function that's way down in the source
> > file.  i can bring them "close together" by folding.
> >
> > previously, i either moved the functions using block cut and copy (ick)
> > or by using vim's marks (better, but still ick).
> >
> >
> > zf: fold the highlighted selection.  it can take movement commands too,
> >    like "zf}" to fold the next paragraph.
> >
> > zo: open a fold.  the cursor must be on top of the proper fold.
> >
> > zc: refold the last fold.
> >
> > what would be nice is if we could have "named folds", like named
> > registers or named marks.
> >
> >
> > wouldn't mind hearing other people's tips....   :-)
> >
> > pete
> >
> >
> >
> > On Fri 02 Apr 04,  4:43 AM, Issac Trotts <ijtrotts@ucdavis.edu> said:
> > > On Fri, Apr 02, 2004 at 03:18:36AM -0800, Peter Jay Salzman wrote:
> > > > it turns out that vim knows what an URL is, and will download the
> > file
> > > > pointed to by that URL.  another vim coolity.
> > >
> > > Thanks for the tip!
> > >
> > > --
> > > Issac Trotts
> > > http://mallorn.ucdavis.edu/~ijtrotts
> > > (w) 530-757-8789
> > >
> > > _______________________________________________
> > > vox-tech mailing list
> > > vox-tech@lists.lugod.org
> > > http://lists.lugod.org/mailman/listinfo/vox-tech
> >
> > --
> > Make everything as simple as possible, but no simpler.  -- Albert
> > Einstein
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> >
>
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