Add space prefix mapping

autoload/SpaceVim.vim

@@ -414,6 +414,7 @@ function! SpaceVim#end() abort
     call SpaceVim#mapping#guide#register_prefix_descriptions('', 'g:leaderGuide_map')
   endif
   call SpaceVim#mapping#leader#defindglobalMappings()
+  call SpaceVim#mapping#space#init()
   if g:spacevim_simple_mode
     let g:spacevim_plugin_groups = ['core']
   else

autoload/SpaceVim/mapping/guide.vim

@@ -394,7 +394,7 @@ function! s:updateStatusline() abort
   hi! LeaderGuiderName cterm=bold gui=bold guifg=#282828 guibg=#fe8019
   hi! LeaderGuiderSep2 cterm=bold gui=bold guifg=#fe8019 guibg=#3c3836
   hi! LeaderGuiderFill guifg=#7c6f64 guibg=#3c3836
-  exe 'setlocal statusline=%#LeaderGuiderPrompt#\ Leader\ Guide:\ ' .
+  exe 'setlocal statusline=%#LeaderGuiderPrompt#\ Mapping\ Guide:\ ' .
         \ '%#LeaderGuiderSep1#' .
         \ '%#LeaderGuiderName#' .
         \ SpaceVim#mapping#leader#getName(s:prefix_key)
@@ -514,6 +514,8 @@ endif
 
 call SpaceVim#mapping#guide#register_prefix_descriptions('\',
       \ 'g:_spacevim_mappings')
+call SpaceVim#mapping#guide#register_prefix_descriptions(' ',
+      \ 'g:_spacevim_mappings_space')
 call SpaceVim#mapping#guide#register_prefix_descriptions(
       \ g:spacevim_unite_leader,
       \ 'g:_spacevim_mappings_unite')

autoload/SpaceVim/mapping/leader.vim

@@ -287,6 +287,8 @@ function! SpaceVim#mapping#leader#getName(key) abort
     return '[unite]'
   elseif a:key == g:spacevim_denite_leader
     return '[denite]'
+  elseif a:key == ' '
+    return '[SPC]'
   else
     return '<leader>'
   endif

autoload/SpaceVim/mapping/space.vim

@@ -0,0 +1,7 @@
+function! SpaceVim#mapping#space#init() abort
+    nnoremap <silent><nowait> [SPC] :<c-u>LeaderGuide " "<CR>
+    nmap <Space> [SPC]
+    let g:_spacevim_mappings_space = {}
+    let g:_spacevim_mappings_space.t = {'name' : 'Toggle editor visuals'}
+    nnoremap <silent> [SPC]tn  :<C-u>set nu!<CR>
+endfunction