Issue 4: List folding doesn't work

Using new list functions to determine list fold level.
As a regression there is no folds for multilined list item's text.

1. item 1
2. item 2
   multilined
	 that is not
	 folded now
3. item 3

Previous method was able to fold item 2. I am not sure if we should fix
it or not.

autoload/vimwiki/lst.vim

@@ -109,6 +109,7 @@ function! s:get_item(lnum) "{{{
     return item
   endif
 
+
   let item.cb = matches[3]
 
   if matches[1] != ''
@@ -570,7 +571,6 @@ function! s:update_state(item) "{{{
   endif
 endfunction "}}}
 
-
 "Creates checkbox in a list item.
 "Returns: 1 if successful
 function! s:create_cb(item) "{{{
@@ -896,7 +896,6 @@ function! vimwiki#lst#remove_cb_in_list() "{{{
   call s:update_state(s:get_parent(first_item))
 endfunction "}}}
 
-
 function! vimwiki#lst#change_marker_in_list(new_mrkr) "{{{
   let cur_item = s:get_corresponding_item(line('.'))
   let first_item = s:get_first_item_in_list(cur_item, 0)
@@ -1103,7 +1102,6 @@ function! s:indent_multiline(prev_item, lnum) "{{{
   endif
 endfunction "}}}
 
-
 function! vimwiki#lst#kbd_o() "{{{
   let fold_end = foldclosedend('.')
   let lnum = (fold_end == -1) ? line('.') : fold_end
@@ -1160,7 +1158,7 @@ function! s:create_marker(lnum) "{{{
   endif
 endfunction "}}}
 
-function! s:cr_on_empty_list_item(lnum, behavior)
+function! s:cr_on_empty_list_item(lnum, behavior) "{{{
   if a:behavior == 1
     "just make a new list item
     normal! gi
@@ -1212,18 +1210,18 @@ function! s:cr_on_empty_list_item(lnum, behavior)
       startinsert
     endif
     return
-  endif
+  endif
 endfunction "}}}
-
+
 function! s:cr_on_empty_line(lnum, behavior) "{{{
   if a:behavior == 2 || a:behavior == 3
     normal! gi
 
     call s:create_marker(a:lnum+1)
   elseif a:behavior == 1 || a:behavior == 4
-    normal! gi
+    normal! gi
 x
-  endif
+  endif
 endfunction "}}}
 
 function! s:cr_on_list_item(lnum, behavior, cur_col) "{{{
@@ -1239,7 +1237,7 @@ function! s:cr_on_list_item(lnum, behavior, cur_col)
     normal! gi
 
     call s:clone_marker_from_to(a:lnum, a:lnum+1)
-    "tiny sweet extra feature: indent next line if current line ends with :
+    "tiny sweet extra feature: indent next line if current line ends with :
     if getline(a:lnum) =~ ':$'
       call s:change_level(a:lnum+1, a:lnum+1, 'increase', 0)
     endif
@@ -1318,7 +1316,7 @@ function! vimwiki#lst#get_list_margin() "{{{
 function! vimwiki#lst#get_list_margin() "{{{
   if VimwikiGet('list_margin') < 0
     return &sw
-  else
+  else
     return VimwikiGet('list_margin')
   endif
 endfunction "}}}
@@ -1352,4 +1350,20 @@ function! vimwiki#lst#setup_marker_infos()
     endfor
     let g:vimwiki_rxListNumber .= s:char_to_rx[g:vimwiki_number_types[-1][0]] .
           \ vimwiki#u#escape(g:vimwiki_number_types[-1][1]) . '\)'
-  else
+  else
+    "regex that matches nothing
+    let g:vimwiki_rxListNumber = '$^'
+  endif
+
+endfunction "}}}
+
+fun! vimwiki#lst#fold_level(lnum) "{{{
+  let cur_item = s:get_item(a:lnum)
+  if cur_item.type != 0
+    let parent_item = s:get_parent(cur_item)
+    let child_item = s:get_first_child(cur_item)
+    let next_item = s:get_next_child_item(parent_item, cur_item)
+    if child_item.type != 0
+      return 'a1'
+    elseif next_item.type == 0
+      return 's1'

ftplugin/vimwiki.vim

@@ -115,7 +115,8 @@ function! s:get_li_level(lnum) "{{{
   if VimwikiGet('syntax') == 'media'
     let level = vimwiki#u#count_first_sym(getline(a:lnum))
   else
-    let level = (indent(a:lnum) / &sw)
+    " let level = (indent(a:lnum) / &sw)
+    let level = indent(a:lnum)
   endif
   return level
 endfunction "}}}
@@ -133,53 +134,7 @@ function! s:get_start_list(rx_item, lnum) "{{{
 endfunction "}}}
 
 function! VimwikiFoldListLevel(lnum) "{{{
-  let line = getline(a:lnum)
+  return vimwiki#lst#fold_level(a:lnum)
-
-  "" XXX Disabled: Header/section folding...
-  "if line =~ g:vimwiki_rxHeader
-  "  return '>'.vimwiki#u#count_first_sym(line)
-  "endif
-
-  "let nnline = getline(a:lnum+1)
-
-  "" Unnecessary?
-  "if nnline =~ g:vimwiki_rxHeader
-  "  return '<'.vimwiki#u#count_first_sym(nnline)
-  "endif
-  "" Very slow when called on every single line!
-  "let base_level = s:get_base_level(a:lnum)
-
-  "FIXME does not work correctly
-  let base_level = 0
-
-  if line =~ g:vimwiki_rxListItem
-    let [nnum, nline] = s:find_forward(g:vimwiki_rxListItem, a:lnum)
-    let level = s:get_li_level(a:lnum)
-    let leveln = s:get_li_level(nnum)
-    let adj = s:get_li_level(s:get_start_list(g:vimwiki_rxListItem, a:lnum))
-
-    if leveln > level
-      return ">".(base_level+leveln-adj)
-    " check if multilined list item
-    elseif (nnum-a:lnum) > 1
-          \ && (nline =~ g:vimwiki_rxListItem || nnline !~ '^\s*$')
-      return ">".(base_level+level+1-adj)
-    else
-      return (base_level+level-adj)
-    endif
-  else
-    " process multilined list items
-    let [pnum, pline] = s:find_backward(g:vimwiki_rxListItem, a:lnum)
-    if pline =~ g:vimwiki_rxListItem
-      if indent(a:lnum) >= indent(pnum) && line !~ '^\s*$'
-        let level = s:get_li_level(pnum)
-        let adj = s:get_li_level(s:get_start_list(g:vimwiki_rxListItem, pnum))
-        return (base_level+level+1-adj)
-      endif
-    endif
-  endif
-
-  return base_level
 endfunction "}}}
 " Folding list items }}}