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List lines with current search pattern highlighted

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created 2006 · complexity intermediate · author Yakov Lerner · version 6.0

This command (PP) prints lines (like :p or :#) with the search pattern highlighted. I use g//p quite often, and I was missing the highlighting of search pattern. To test this command, try something like:


If you supply the optional argument # (PP #) then line numbers are also printed.

" command PP: print lines like :p or :# but with with current search pattern highlighted
command! -nargs=? -range -bar PP :call PrintWithSearchHighlighted(<line1>,<line2>,<q-args>)
function! PrintWithSearchHighlighted(line1,line2,arg)
  let line=a:line1
  while line <= a:line2
    echo ""
    if a:arg =~ "#"
      echohl LineNr
      echo strpart(" ",0,7-strlen(line)).line."\t"
      echohl None
    let l=getline(line)
    let index=0
    while 1
      let b=match(l,@/,index)
      if b==-1 |
        echon strpart(l,index)
      let e=matchend(l,@/,index) |
      echon strpart(l,index,b-index)
      echohl Search
      echon strpart(l,b,e-b)
      echohl None
      let index = e
    let line=line+1


Just a small issue, it chokes on:


A small addition:

nmap [I :execute 'SS g/\<' . expand( '<cword>' ) . '\>/PP #'<CR>

Changes the behaviour of the internal [I to highlight the text now.

I noticed that it breaks on ^ and $ (if they're alone), also, but that doesn't really happen that often.

I think you meant (without SS):

nmap [I :execute 'g/\<' . expand( '<cword>' ) . '\>/PP #'<CR>

Yes, [I with highlighting is a great idea. Now the only thing lacking is the jump numbers at the start of each line that are right-aligned.

About choking on ^ and $ anchors, it actually poses minor practical problems. Searching for ^ or $ alone is useful to indicate the whole line. In the case for ranges:

"print lines 3 to 34, including empty lines
"how would we do this without using ^ or $?
"is almost the same but not quite (at EOF)

Anything that can possibly evaluate to matching nothing but anchors ^ or $ or void will choke it too. But these aren't practical:

"trailing spaces
"dash line

 let e=matchend(l,@/,index)
+ if e == b
+ let e = e+1
+ endif

should solve problem with zero length regexps - they are displayed as in Vim - next character is highlighted. (there is still another problem with match function - so '^', '\<' aren't matched correctly)

and this:

- echon strpart(l." ",b,e-b)
+ echon strpart(l." ",b,e-b)

will display '$' correctly too.

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