Update lang#vim layer

autoload/SpaceVim/layers/lang/vim.vim

@@ -13,4 +13,25 @@ endfunction
 
 function! SpaceVim#layers#lang#vim#config() abort
   call SpaceVim#mapping#gd#add('vim','lookup#lookup')
+  call SpaceVim#mapping#space#regesit_lang_mappings('vim', funcref('s:language_specified_mappings'))
+endfunction
+
+function! s:language_specified_mappings() abort
+  call SpaceVim#mapping#space#langSPC('nmap', ['l','e'],  'call call('
+                \ . string(function('s:eval_cursor')) . ', [])',
+                \ 'echo eval under cursor', 1)
+  call SpaceVim#mapping#space#langSPC('nmap', ['l','v'],  'call call('
+                \ . string(function('s:helpversion_cursor')) . ', [])',
+                \ 'echo helpversion under cursor', 1)
+endfunction
+
+function! s:eval_cursor() abort
+  let is_keyword = &iskeyword
+  set iskeyword+=:
+  echo expand('<cword>') 'is' eval(expand('<cword>'))
+  let &iskeyword = is_keyword
+endfunction
+
+function! s:helpversion_cursor() abort
+  exe 'HelpfulVersion' expand('<cword>')
 endfunction

docs/layers/lang/vim.md

@@ -0,0 +1,28 @@
+---
+title: "SpaceVim lang#vim layer"
+---
+
+# [SpaceVim Layers:](https://spacevim.org/layers) lang#vim
+
+<!-- vim-markdown-toc GFM -->
+
+- [Description](#description)
+- [Layer Installation](#layer-installation)
+- [Key bindings](#key-bindings)
+
+<!-- vim-markdown-toc -->
+
+## Description
+
+This layer is for vim plugin development.
+
+## Layer Installation
+
+To use this configuration layer, add `call SpaceVim#layers#load('lang#vim')` to your custom configuration file.
+
+## Key bindings
+
+| Key Binding | Description                               |
+| ----------- | ----------------------------------------- |
+| `SPC l e`   | print the eval under the cursor           |
+| `SPC l v`   | print the helpfulversion under the cursor |