Update statusline doc

autoload/SpaceVim/layers/core/statusline.vim

@@ -174,7 +174,7 @@ function! s:date() abort
 endfunction
 
 function! s:whitespace() abort
-  let ln = search('\s\+$', 'n')
+  let ln = search('\s\+$', 'nw')
   if ln != 0
     return ' trailing[' . ln . '] '
   else

docs/cn/layers/core/statusline.md

@@ -38,7 +38,7 @@ lang: cn
 
 ## 相关选项
 
-在这里，将列出一些与状态栏相关的 SpaceVim 相关选项，这些选项并非模块选项，需加以区分：
+在这里，将列出一些与状态栏相关的 SpaceVim 选项，这些选项并非模块选项，需加以区分：
 
 ```toml
 [options]
@@ -83,3 +83,4 @@ lang: cn
     # 'search status' 搜索状态
 ```
 
+更多关于 SpaceVim 状态栏的配置，可以参考[《用户手册》](../../../documentation/#状态栏)

docs/layers/core/statusline.md

@@ -8,15 +8,89 @@ description: "This layer provides default statusline for SpaceVim"
 <!-- vim-markdown-toc GFM -->
 
 - [Description](#description)
+- [Install](#install)
 - [Configuration](#configuration)
 
 <!-- vim-markdown-toc -->
 
-## Description
+### Description
 
- This layer provides default statusline for SpaceVim.
+This layer provides a heavily customized powerline with the following capabilities:
 
-## Configuration
+- show the window number
+- show the current mode
+- color code for current state
+- show the index of searching result
+- toggle syntax checking info
+- toggle battery info
+- toggle minor mode lighters
+- show VCS information (branch, hunk summary) (need `git` and `VersionControl` layer)
+
+### Install
+
+To use this configuration layer, add following snippet to your custom configuration file.
+
+```toml
+[[layers]]
+  name = "core#statusline"
+```
+
+### Configuration
+
+Here is a list of SpaceVim options for statusline, these are different from layer options:
+
+```toml
+[options]
+    # options for statusline
+    # Set the statusline separators of statusline, default is "arrow"
+    statusline_separator = "arrow"
+    # Set the statusline separators of inactive statusline
+    statusline_inactive_separator = "bar"
+
+    # Set SpaceVim buffer index type
+    buffer_index_type = 4
+    # 0: 1 ➛ ➊
+    # 1: 1 ➛ ➀
+    # 2: 1 ➛ ⓵
+    # 3: 1 ➛ ¹
+    # 4: 1 ➛ 1
+
+    # Enable/Disable show mode on statusline
+    enable_statusline_display_mode = true
+
+    # left sections of statusline
+    statusline_left_sections = [
+       'winnr',
+       'major mode',
+       'filename',
+       'fileformat',
+       'minor mode lighters',
+       'version control info',
+       'search status'
+    ]
+    # right sections of statusline
+    statusline_right_sections = [
+       'cursorpos',
+       'percentage',
+       'input method',
+       'date',
+       'time'
+    ]
+
+    # 'winnr' window number
+    # 'syntax checking'
+    # 'filename' file name
+    # 'fileformat' file format
+    # 'major mode'
+    # 'minor mode lighters'
+    # 'cursorpos' cursor position
+    # 'percentage' content range
+    # 'date' date
+    # 'time' time
+    # 'whitespace' line number with trailing space at the end
+    # 'battery status' battery status
+    # 'input method' input method
+    # 'search status' search index
+```
 
 All statusline key bindings can be find on [SpaceVim documentation](../../../documentation/#statusline)
-