Improve logger

autoload/SpaceVim.vim

@@ -91,6 +91,9 @@ let g:spacevim_checkinstall            = 1
 "   let g:spacevim_enable_debug = 1
 " <
 let g:spacevim_enable_debug            = 0
+""
+" Set the debug level of SpaceVim, by default it is 1.
+let g:spacevim_debug_level             = 1
 let g:spacevim_hiddenfileinfo          = 1
 let g:spacevim_plugin_groups_exclude   = []
 ""

autoload/SpaceVim/logger.vim

@@ -1,4 +1,4 @@
-let s:logger_level = 1
+let s:logger_level = g:spacevim_debug_level
 let s:levels = ['Info', 'Warn', 'Error']
 let s:logger_file = expand('~/.SpaceVim/.SpaceVim.log')
 
@@ -17,6 +17,7 @@ endfunction
 
 function! SpaceVim#logger#info(msg) abort
     if g:spacevim_enable_debug && s:logger_level <= 1
+        echo s:logger_level
         call s:wite(s:warpMsg(a:msg, 1))
     endif
 endfunction
@@ -39,13 +40,9 @@ endfunction
 
 
 function! SpaceVim#logger#viewLog(...) abort
-    let l = a:0 > 0 ? a:1 : 0
+    let l = a:0 > 0 ? a:1 : 1
     let logs = readfile(s:logger_file, '')
-    for log in logs
-        if log =~# '\[ SpaceVim \] \[\d\d\:\d\d\:\d\d\] \[' . s:levels[l] .'\]'
-            echo log
-        endif
-    endfor
+    return join(filter(logs, "v:val =~# '\[ SpaceVim \] \[\d\d\:\d\d\:\d\d\] \[' . s:levels[l] .'\]'"), "\n")
 endfunction
 
 ""

doc/SpaceVim.txt

@@ -90,6 +90,9 @@ to enable it:
   let g:spacevim_enable_debug = 1
 <
 
+                                                      *g:spacevim_debug_level*
+Set the debug level of SpaceVim, by default it is 1.
+
                                                     *g:spacevim_plugin_groups*
 groups of plugins should be loaded.