fix issue #266

README.md

@@ -46,6 +46,12 @@ let g:indentLine_char = 'c'
 ```
 where `'c'` can be any ASCII character. You can also use one of `¦`, `┆`, `│`, `⎸`, or `▏` to display more beautiful lines. However, these characters will only work with files whose encoding is UTF-8.
 
+or
+```vim
+let g:indentLine_char_list = ['|', '¦', '┆', '┊']
+```
+each indent level has a distinct character.
+
 **Change Conceal Behaviour**
 
 This plugin enables the Vim `conceal` feature which automatically hides stretches of text based on syntax highlighting. This setting will apply to all syntax items.

after/plugin/indentLine.vim

@@ -13,6 +13,7 @@ let g:indentLine_loaded = 1
 let g:indentLine_newVersion = get(g:,'indentLine_newVersion',v:version > 704 || v:version == 704 && has("patch792"))
 
 let g:indentLine_char = get(g:, 'indentLine_char', (&encoding ==# "utf-8" && &term isnot# "linux" ? '¦' : '|'))
+let g:indentLine_char_list = get(g:, 'indentLine_char_list', [])
 let g:indentLine_first_char = get(g:, 'indentLine_first_char', (&encoding ==# "utf-8" && &term isnot# "linux" ? '¦' : '|'))
 let g:indentLine_indentLevel = get(g:, 'indentLine_indentLevel', 20)
 let g:indentLine_enabled = get(g:, 'indentLine_enabled', 1)
@@ -139,8 +140,16 @@ function! s:IndentLinesEnable()
         endif
 
         let space = &l:shiftwidth == 0 ? &l:tabstop : &l:shiftwidth
+        let n = len(g:indentLine_char_list)
+        let level = 0
         for i in range(space+1, space * g:indentLine_indentLevel + 1, space)
-            call add(w:indentLine_indentLineId, matchadd('Conceal', '^\s\+\zs\%'.i.'v ', 0, -1, {'conceal': g:indentLine_char}))
+            if n > 0
+                let char = g:indentLine_char_list[level % n]
+                let level += 1
+            else
+                let char = g:indentLine_char
+            endif
+            call add(w:indentLine_indentLineId, matchadd('Conceal', '^\s\+\zs\%'.i.'v ', 0, -1, {'conceal': char}))
         endfor
 
         return

doc/indentLine.txt

@@ -20,16 +20,20 @@ CONFIG                                          *indentLine-config*
 ==============================================================================
 VARIABLES                                       *indentLine-variables*
 
-g:indentLine_loaded                             *g:loaded_indentLine*
-                Whether load indentLine plugin.
-                Default value is 0.
-
 g:indentLine_char                               *g:indentLine_char*
-                Specify a character to be used as indent line.
+                Specify a character to be used as indent line if
+                |g:indentLine_char_list| is not [].
                 You also can use other characters:
                   | ¦ ┆ │
                 Default value is "|".
 
+g:indentLine_char_list                          *g:indentLine_char_list*
+                Specify a list of characters to be used as indent line for
+                each indent level. If the value is an empty list [], use
+                |g:indentLine_char| instead.
+                e.g., let g:indentLine_char_list = ['|', '¦', '┆', '┊']
+                Default value is [].
+
 g:indentLine_setColors                          *g:indentLine_setColors*
                 By default, indentLine will overwrite 'conceal' color.
                 If you want to highlight conceal with your