Delete lines matching hits
Eduard
I make abundant use of a wonderful function I found at
http://vim.wikia.com/wiki/Copy_the_search_results_into_clipboard
to copy all matching lines, whole lines, containing hits.
I wonder if there's a way to do the same but instead of copying them
to the clipboard, delete them.
I very much appreciate your attention,
Eduard Fabra
http://www.google.com/profiles/edfabra
PS. The exact script I'm using is this:
" Use /pattern to search for something, then
" :call CopyMatchingLines()
" to copy all lines containing hits (whole lines).
" The pattern may extend over multiple lines.
" The 'normal! $' attempts to avoid copying the same line more than
once.
" BUG: For some patterns, it could miss a second hit?
function! CopyMatchingLines()
let posinit = getpos(".")
call cursor(1, 1)
let cnt = 0
let hits = []
let snum = search(@/, 'cW')
while snum > 0
let enum = search(@/, 'ceW')
call extend(hits, getline(snum, enum))
let cnt += 1
normal! $
let snum = search(@/, 'W')
endwhile
if cnt > 0
let @+ = join(hits, "\n") . "\n"
endif
call cursor(posinit[1], posinit[2])
echomsg cnt 'lines (or blocks) were appended to the clipboard.'
endfunction
Javier Rojas
> ...
> to copy all matching lines, whole lines, containing hits.
>
> I wonder if there's a way to do the same but instead of copying them
> to the clipboard, delete them.
:g/pattern/d
See :help :g
--
Javier Rojas
GPG Key ID: 0x24E00D68
Eduard
Ben Fritz
On Feb 5, 12:25 pm, Javier Rojas <jeroja...@devnull.li> wrote:
> On Sat, Feb 05, 2011 at 10:14:19AM -0800, Eduard wrote:
> > ...
> > to copy all matching lines, whole lines, containing hits.
>
> > I wonder if there's a way to do the same but instead of copying them
> > to the clipboard, delete them.
>
> :g/pattern/d
>
> See :help :g
>
in the code posted: "The pattern may extend over multiple lines."
For example,
abc
def
ghi
:g/abcc\ndef/d
will delete only "abc", it will not delete "def".
I'm not sure how important this is to the OP...
Tim Chase
>>> I wonder if there's a way to do the same but instead of copying them
>>> to the clipboard, delete them.
>>
>> :g/pattern/d
>
> in the code posted: "The pattern may extend over multiple lines."
>
> For example,
>
> abc
> def
> ghi
>
> :g/abcc\ndef/d
>
> will delete only "abc", it will not delete "def".
>
> I'm not sure how important this is to the OP...
If it is, it should be fairly possible to do it with a :s
command, something like
:%s/^abc\ndef\n//
-tim
ZyX
sent 02:48:53 06 February 2011, Sunday
by Tim Chase:
> If it is, it should be fairly possible to do it with a :s
> command, something like
>
> :%s/^abc\ndef\n//
It should be
:%s/.*{pattern}.*\n//
or, in this particular case:
:%s/.*abc\ndef.*\n//
because we are going to delete the whole lines that contain match, but nobody
said that they contain only match. Both solutions does not work for patterns
with \zs and \ze, maybe it is better to do the following:
function! s:MarkToDel(todelete, sline, submatch)
let lnum=len(substitute(a:submatch, '\n\@!.', '', 'g'))
call add(a:todelete, [a:sline, lnum])
return a:submatch
endfunction
function! DeleteMatchingLines(pattern)
let todelete=[]
let savedgdefault=&gdefault
set nogdefault
try
execute '%s/'.escape(a:pattern, '/').
\'/\=s:MarkToDel(todelete, line("."), submatch(0))'
finally
let &gdefault=savedgdefault
endtry
let deleted=0
for [sline, lnum] in todelete
let sline-=deleted
let deleted+=lnum+1
let range=sline.','.(sline+lnum)
execute range.'delete _'
endfor
endfunction
By the way, with some trivial modifications this code can be used in
CopyMatchingLines because it has the following advantages:
1. For each match only one search is done.
2. Pattern is compiled only once.
3. No «The 'normal! $' attempts to avoid copying the same line more than
once.»: vim does this for you when you omit /g flag (this is why 'gdefault'
option is saved and restored).
Original message:
Eduard
I think this will not work for the second part claimed by the comment
in the code posted: "The pattern may extend over multiple lines."
For example,
abc
def
ghi
:g/abcc\ndef/d
will delete only "abc", it will not delete "def".
I'm not sure how important this is to the OP...
Eduard
ZyX
by Eduard:
> How should I use your function? I've copied it to my .vimrc but don't know
> what to do next :-)-
I thought that the only argument to this function is self-explanatory. Just do
:call DeleteMatchingLines('abc\ndef')<CR>
to delete all lines matching pattern `abc\ndef' (they are not put in any
register).
Original message:
Eduard Fabra
On Sun, Feb 6, 2011 at 18:25, ZyX <zyx...@gmail.com> wrote:
> > How should I use your function? I've copied it to my .vimrc but don't know
> > what to do next :-)-
> I thought that the only argument to this function is self-explanatory. Just do
> :call DeleteMatchingLines('abc\ndef')<CR>
> to delete all lines matching pattern `abc\ndef' (they are not put in any
> register).