re-integrate runtime/ vim-patch:0 #938

Vim runtime files based on 7.4.384 / hg changeset 7090d7f160f7

Excluding:
  Amiga icons (*.info, icons/)
  doc/hangulin.txt
  tutor/
  spell/
  lang/ (only used for menu translations)
  macros/maze/, macros/hanoi/, macros/life/, macros/urm/
      These were used to test vi compatibility.
  termcap
      "Demonstration of a termcap file (for the Amiga and Archimedes)"

Helped-by: Rich Wareham <rjw57@cam.ac.uk>
Helped-by: John <john.schmidt.h@gmail.com>
Helped-by: Yann <yann@yann-salaun.com>
Helped-by: Christophe Badoit <c.badoit@lesiteimmo.com>
Helped-by: drasill <github@tof2k.com>
Helped-by: Tae Sandoval Murgan <taecilla@gmail.com>
Helped-by: Lowe Thiderman <lowe.thiderman@gmail.com>

1 files changed, 182 insertions, 0 deletions

diff --git a/runtime/plugin/matchparen.vim b/runtime/plugin/matchparen.vim
new file mode 100644
index 0000000000..817ce62b28
--- /dev/null
+++ b/runtime/plugin/matchparen.vim
@@ -0,0 +1,182 @@
+" Vim plugin for showing matching parens
+" Maintainer:  Bram Moolenaar <Bram@vim.org>
+" Last Change: 2014 Jul 19
+
+" Exit quickly when:
+" - this plugin was already loaded (or disabled)
+" - when 'compatible' is set
+" - the "CursorMoved" autocmd event is not available.
+if exists("g:loaded_matchparen") || &cp || !exists("##CursorMoved")
+  finish
+endif
+let g:loaded_matchparen = 1
+
+if !exists("g:matchparen_timeout")
+  let g:matchparen_timeout = 300
+endif
+if !exists("g:matchparen_insert_timeout")
+  let g:matchparen_insert_timeout = 60
+endif
+
+augroup matchparen
+  " Replace all matchparen autocommands
+  autocmd! CursorMoved,CursorMovedI,WinEnter * call s:Highlight_Matching_Pair()
+  if exists('##TextChanged')
+    autocmd! TextChanged,TextChangedI * call s:Highlight_Matching_Pair()
+  endif
+augroup END
+
+" Skip the rest if it was already done.
+if exists("*s:Highlight_Matching_Pair")
+  finish
+endif
+
+let s:cpo_save = &cpo
+set cpo-=C
+
+" The function that is invoked (very often) to define a ":match" highlighting
+" for any matching paren.
+function! s:Highlight_Matching_Pair()
+  " Remove any previous match.
+  if exists('w:paren_hl_on') && w:paren_hl_on
+    silent! call matchdelete(3)
+    let w:paren_hl_on = 0
+  endif
+
+  " Avoid that we remove the popup menu.
+  " Return when there are no colors (looks like the cursor jumps).
+  if pumvisible() || (&t_Co < 8 && !has("gui_running"))
+    return
+  endif
+
+  " Get the character under the cursor and check if it's in 'matchpairs'.
+  let c_lnum = line('.')
+  let c_col = col('.')
+  let before = 0
+
+  let text = getline(c_lnum)
+  let c = text[c_col - 1]
+  let plist = split(&matchpairs, '.\zs[:,]')
+  let i = index(plist, c)
+  if i < 0
+    " not found, in Insert mode try character before the cursor
+    if c_col > 1 && (mode() == 'i' || mode() == 'R')
+      let before = 1
+      let c = text[c_col - 2]
+      let i = index(plist, c)
+    endif
+    if i < 0
+      " not found, nothing to do
+      return
+    endif
+  endif
+
+  " Figure out the arguments for searchpairpos().
+  if i % 2 == 0
+    let s_flags = 'nW'
+    let c2 = plist[i + 1]
+  else
+    let s_flags = 'nbW'
+    let c2 = c
+    let c = plist[i - 1]
+  endif
+  if c == '['
+    let c = '\['
+    let c2 = '\]'
+  endif
+
+  " Find the match.  When it was just before the cursor move it there for a
+  " moment.
+  if before > 0
+    let has_getcurpos = exists("*getcurpos")
+    if has_getcurpos
+      " getcurpos() is more efficient but doesn't exist before 7.4.313.
+      let save_cursor = getcurpos()
+    else
+      let save_cursor = winsaveview()
+    endif
+    call cursor(c_lnum, c_col - before)
+  endif
+
+  " When not in a string or comment ignore matches inside them.
+  " We match "escape" for special items, such as lispEscapeSpecial.
+  let s_skip ='synIDattr(synID(line("."), col("."), 0), "name") ' .
+	\ '=~?  "string\\|character\\|singlequote\\|escape\\|comment"'
+  execute 'if' s_skip '| let s_skip = 0 | endif'
+
+  " Limit the search to lines visible in the window.
+  let stoplinebottom = line('w$')
+  let stoplinetop = line('w0')
+  if i % 2 == 0
+    let stopline = stoplinebottom
+  else
+    let stopline = stoplinetop
+  endif
+
+  " Limit the search time to 300 msec to avoid a hang on very long lines.
+  " This fails when a timeout is not supported.
+  if mode() == 'i' || mode() == 'R'
+    let timeout = exists("b:matchparen_insert_timeout") ? b:matchparen_insert_timeout : g:matchparen_insert_timeout
+  else
+    let timeout = exists("b:matchparen_timeout") ? b:matchparen_timeout : g:matchparen_timeout
+  endif
+  try
+    let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline, timeout)
+  catch /E118/
+    " Can't use the timeout, restrict the stopline a bit more to avoid taking
+    " a long time on closed folds and long lines.
+    " The "viewable" variables give a range in which we can scroll while
+    " keeping the cursor at the same position.
+    " adjustedScrolloff accounts for very large numbers of scrolloff.
+    let adjustedScrolloff = min([&scrolloff, (line('w$') - line('w0')) / 2])
+    let bottom_viewable = min([line('$'), c_lnum + &lines - adjustedScrolloff - 2])
+    let top_viewable = max([1, c_lnum-&lines+adjustedScrolloff + 2])
+    " one of these stoplines will be adjusted below, but the current values are
+    " minimal boundaries within the current window
+    if i % 2 == 0
+      if has("byte_offset") && has("syntax_items") && &smc > 0
+	let stopbyte = min([line2byte("$"), line2byte(".") + col(".") + &smc * 2])
+	let stopline = min([bottom_viewable, byte2line(stopbyte)])
+      else
+	let stopline = min([bottom_viewable, c_lnum + 100])
+      endif
+      let stoplinebottom = stopline
+    else
+      if has("byte_offset") && has("syntax_items") && &smc > 0
+	let stopbyte = max([1, line2byte(".") + col(".") - &smc * 2])
+	let stopline = max([top_viewable, byte2line(stopbyte)])
+      else
+	let stopline = max([top_viewable, c_lnum - 100])
+      endif
+      let stoplinetop = stopline
+    endif
+    let [m_lnum, m_col] = searchpairpos(c, '', c2, s_flags, s_skip, stopline)
+  endtry
+
+  if before > 0
+    if has_getcurpos
+      call setpos('.', save_cursor)
+    else
+      call winrestview(save_cursor)
+    endif
+  endif
+
+  " If a match is found setup match highlighting.
+  if m_lnum > 0 && m_lnum >= stoplinetop && m_lnum <= stoplinebottom 
+    if exists('*matchaddpos')
+      call matchaddpos('MatchParen', [[c_lnum, c_col - before], [m_lnum, m_col]], 10, 3)
+    else
+      exe '3match MatchParen /\(\%' . c_lnum . 'l\%' . (c_col - before) .
+	    \ 'c\)\|\(\%' . m_lnum . 'l\%' . m_col . 'c\)/'
+    endif
+    let w:paren_hl_on = 1
+  endif
+endfunction
+
+" Define commands that will disable and enable the plugin.
+command! NoMatchParen windo silent! call matchdelete(3) | unlet! g:loaded_matchparen |
+	  \ au! matchparen
+command! DoMatchParen runtime plugin/matchparen.vim | windo doau CursorMoved
+
+let &cpo = s:cpo_save
+unlet s:cpo_save