/usr/share/vim/addons/autoload/ctrlp/tag.vim is in vim-ctrlp 1.80-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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" File: autoload/ctrlp/tag.vim
" Description: Tag file extension
" Author: Kien Nguyen <github.com/kien>
" =============================================================================
" Init {{{1
if exists('g:loaded_ctrlp_tag') && g:loaded_ctrlp_tag
fini
en
let g:loaded_ctrlp_tag = 1
cal add(g:ctrlp_ext_vars, {
\ 'init': 'ctrlp#tag#init()',
\ 'accept': 'ctrlp#tag#accept',
\ 'lname': 'tags',
\ 'sname': 'tag',
\ 'enter': 'ctrlp#tag#enter()',
\ 'type': 'tabs',
\ })
let s:id = g:ctrlp_builtins + len(g:ctrlp_ext_vars)
" Utilities {{{1
fu! s:findcount(str, tgaddr)
let [tg, ofname] = split(a:str, '\t\+\ze[^\t]\+$')
let tgs = taglist('^'.tg.'$')
if len(tgs) < 2
retu [0, 0, 0, 0]
en
let bname = fnamemodify(bufname('%'), ':p')
let fname = expand(fnamemodify(simplify(ofname), ':s?^[.\/]\+??:p:.'), 1)
let [fnd, cnt, pos, ctgs, otgs] = [0, 0, 0, [], []]
for tgi in tgs
let lst = bname == fnamemodify(tgi["filename"], ':p') ? 'ctgs' : 'otgs'
cal call('add', [{lst}, tgi])
endfo
let ntgs = ctgs + otgs
for tgi in ntgs
let cnt += 1
let fulname = fnamemodify(tgi["filename"], ':p')
if stridx(fulname, fname) >= 0
\ && strlen(fname) + stridx(fulname, fname) == strlen(fulname)
let fnd += 1
let pos = cnt
en
endfo
let cnt = 0
for tgi in ntgs
let cnt += 1
if tgi["filename"] == ofname
if a:tgaddr != ""
if a:tgaddr == tgi["cmd"]
let [fnd, pos] = [0, cnt]
en
else
let [fnd, pos] = [0, cnt]
en
en
endfo
retu [1, fnd, pos, len(ctgs)]
endf
fu! s:filter(tags)
let nr = 0
wh 0 < 1
if a:tags == [] | brea | en
if a:tags[nr] =~ '^!' && a:tags[nr] !~# '^!_TAG_'
let nr += 1
con
en
if a:tags[nr] =~# '^!_TAG_' && len(a:tags) > nr
cal remove(a:tags, nr)
el
brea
en
endw
retu a:tags
endf
fu! s:syntax()
if !ctrlp#nosy()
cal ctrlp#hicheck('CtrlPTabExtra', 'Comment')
sy match CtrlPTabExtra '\zs\t.*\ze$'
en
endf
" Public {{{1
fu! ctrlp#tag#init()
if empty(s:tagfiles) | retu [] | en
let g:ctrlp_alltags = []
let tagfiles = sort(filter(s:tagfiles, 'count(s:tagfiles, v:val) == 1'))
for each in tagfiles
let alltags = s:filter(ctrlp#utils#readfile(each))
cal extend(g:ctrlp_alltags, alltags)
endfo
cal s:syntax()
retu g:ctrlp_alltags
endf
fu! ctrlp#tag#accept(mode, str)
cal ctrlp#exit()
let tgaddr = matchstr(a:str, '^[^\t]\+\t\+[^\t]\+\t\zs[^\t]\{-1,}\ze\%(;"\)\?\t')
let str = matchstr(a:str, '^[^\t]\+\t\+[^\t]\+\ze\t')
let [tg, fdcnt] = [split(str, '^[^\t]\+\zs\t')[0], s:findcount(str, tgaddr)]
let cmds = {
\ 't': ['tab sp', 'tab stj'],
\ 'h': ['sp', 'stj'],
\ 'v': ['vs', 'vert stj'],
\ 'e': ['', 'tj'],
\ }
let utg = fdcnt[3] < 2 && fdcnt[0] == 1 && fdcnt[1] == 1
let cmd = !fdcnt[0] || utg ? cmds[a:mode][0] : cmds[a:mode][1]
let cmd = a:mode == 'e' && ctrlp#modfilecond(!&aw)
\ ? ( cmd == 'tj' ? 'stj' : 'sp' ) : cmd
let cmd = a:mode == 't' ? ctrlp#tabcount().cmd : cmd
if !fdcnt[0] || utg
if cmd != ''
exe cmd
en
let save_cst = &cst
set cst&
cal feedkeys(":".( utg ? fdcnt[2] : "" )."ta ".tg."\r", 'nt')
let &cst = save_cst
el
let ext = ""
if fdcnt[1] < 2 && fdcnt[2]
let [sav_more, &more] = [&more, 0]
let ext = fdcnt[2]."\r".":let &more = ".sav_more."\r"
en
cal feedkeys(":".cmd." ".tg."\r".ext, 'nt')
en
cal feedkeys('zvzz', 'nt')
cal ctrlp#setlcdir()
endf
fu! ctrlp#tag#id()
retu s:id
endf
fu! ctrlp#tag#enter()
let tfs = tagfiles()
let s:tagfiles = tfs != [] ? filter(map(tfs, 'fnamemodify(v:val, ":p")'),
\ 'filereadable(v:val)') : []
endf
"}}}
" vim:fen:fdm=marker:fmr={{{,}}}:fdl=0:fdc=1:ts=2:sw=2:sts=2
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