diff --git a/config/fish/config.fish b/config/fish/config.fish
index f3f0de4..504511d 100644
--- a/config/fish/config.fish
+++ b/config/fish/config.fish
@@ -25,6 +25,7 @@ end
 source-file-if-exists /usr/share/autojump/autojump.fish
 source-file-if-exists /usr/local/share/autojump/autojump.fish
 append-path-if-exists ~/.local/bin
+append-path-if-exists ~/Programs/bin
 append-path-if-exists ~/.yarn/bin
 source-file-if-exists ~/.cargo/env
 append-path-if-exists /usr/local/bin
diff --git a/tex.vimrc b/tex.vimrc
new file mode 100644
index 0000000..ef37679
--- /dev/null
+++ b/tex.vimrc
@@ -0,0 +1,102 @@
+function! MathAndLiquid()
+  "" Define certain regions
+  " Block math. Look for "$$[anything]$$"
+  syn region math start=/\$\$/ end=/\$\$/
+  " inline math. Look for "$[not $][anything]$"
+  syn match math_block '\$[^$].\{-}\$'
+
+  " Liquid single line. Look for "{%[anything]%}"
+  syn match liquid '{%.*%}'
+  " Liquid multiline. Look for "{%[anything]%}[anything]{%[anything]%}"
+  syn region highlight_block start='{% highlight .*%}' end='{%.*%}'
+  " Fenced code blocks, used in GitHub Flavored Markdown (GFM)
+  syn region highlight_block start='```' end='```'
+
+  "" Actually highlight those regions.
+  hi link math Statement
+  hi link liquid Statement
+  hi link highlight_block Function
+  hi link math_block Function
+endfunction
+
+" Call everytime we open a Markdown file
+"autocmd BufRead,BufNewFile,BufEnter *.md,*.markdown call MathAndLiquid()
+
+" \vm 2 4\<Tab>
+" \begin{vmatrix}
+" <++> & <++> & <++> & <++> \\
+" <++> & <++> & <++> & <++ > \\
+" \end{vmatrix}<++>
+"
+function! Tex()
+  let mark = '\'
+  let sepr = ' '
+  let tags = {'vm': 'vmatrix', 'bm': 'bmatrix', 'mt': 'matrix', 'cs': 'cases', 'ad': 'aligned', 'al': 'align', 'ar': 'array'}
+  let text = getline('.')
+  let end = col('.')
+  let start = strridx(text, mark, end)
+  if start > -1
+    let params = strpart(text, start+1, end - start - 1)
+    let params = split(params, sepr)
+    let abbr = params[0]
+    if strlen(abbr) == 0 || !has_key(tags, abbr)
+      return
+    endif
+    let rc = params[1]
+    if !(rc>0)
+      return
+    endif
+    if len(params)>2
+      let cc = params[2]
+      if !(cc>0)
+        return
+      endif
+    else
+      let cc = 1
+    end
+
+    let prefix = repeat(' ', start)
+
+    let thecols = []
+    let i = 0
+    while i < cc
+      call add(thecols, '<++>')
+      let i += 1
+    endwhile
+    let columnsText = prefix . '  '. join(thecols, ' & ') . ' \\'
+
+    let lines = []
+    let i = 0
+    while i < rc
+      call add(lines, columnsText)
+      let i += 1
+    endwhile
+    call add(lines, prefix . '\end{' . tags[abbr] . '}<++>')
+
+    let leftPart = strpart(text, 0, start)
+    let rightPart = strpart(text, end)
+    if strlen(rightPart) > 0
+      call add(lines, prefix . rightPart)
+    endif
+    call setline(line('.'), leftPart . '\begin{' . tags[abbr] . '}')
+    call append(line('.'), lines)
+    "call append(line('.'), lines)
+  endif
+endfunction
+
+" autocmd FileType markdown
+inoremap <Bslash><Tab> <Esc>:call Tex()<Esc>a
+" Navigating with guides
+inoremap <leader><Tab> <Esc>/<++><Enter>"_c4l
+vnoremap <leader><Tab> <Esc>/<++><Enter>"_c4l
+map <leader><Tab> <Esc>/<++><Enter>"_c4l
+nmap <C-_>   <Plug>NERDCommenterToggle
+vmap <C-_>   <Plug>NERDCommenterToggle<CR>gv
+
+" Markdown setup
+autocmd FileType markdown inoremap \cs<Tab> \begin{cases}\end{cases}<++><Esc>F\i
+autocmd FileType markdown inoremap \fr<Tab> \frac{<++>}{<++>}<++><Esc>F\i
+autocmd FileType markdown inoremap `<Tab> `$$`<++><Esc>F$i
+autocmd FileType markdown inoremap $<Tab> $$<Enter>$$<Enter><++><Esc>kO
+autocmd FileType markdown inoremap \{ \{\}<++><Esc>F{a
+autocmd FileType markdown vnoremap <leader>b c__<C-r>"__<Esc>
diff --git a/vimrc b/vimrc
index 2417cfd..a28fb4b 100644
--- a/vimrc
+++ b/vimrc
@@ -37,50 +37,44 @@ else
   source $VIMRUNTIME/delmenu.vim
   source $VIMRUNTIME/menu.vim
 endif
-Plug 'terryma/vim-multiple-cursors'
-Plug 'jiangmiao/auto-pairs'
-"Plug 'scrooloose/syntastic'
-"Plug 'w0rp/ale'
-Plug 'scrooloose/nerdtree'
-Plug 'alvan/vim-closetag'
-"Plug 'AndrewRadev/tagalong.vim'
-Plug 'tpope/vim-repeat'
-Plug 'tpope/vim-fugitive'                                         " git 功能
-Plug 'tpope/vim-surround'
-"Plug 'vim-airline/vim-airline'
-"Plug 'vim-airline/vim-airline-themes'
-Plug 'scrooloose/nerdcommenter'
-Plug 'editorconfig/editorconfig-vim'
+
+" searching and formatting
 Plug 'mhinz/vim-grepper', { 'on': ['Grepper', '<plug>(GrepperOperator)'] }
 Plug 'ctrlpvim/ctrlp.vim'
+Plug 'godlygeek/tabular' " align text by specified pattern   :Tabularize /<pattern>
+Plug 'editorconfig/editorconfig-vim'
+Plug 'tpope/vim-surround'
+Plug 'tpope/vim-repeat'
+Plug 'alvan/vim-closetag'
+Plug 'jiangmiao/auto-pairs'
+
+" ide like
+Plug 'neoclide/coc.nvim', {'branch': 'release'}
+Plug 'mgedmin/coverage-highlight.vim'
+"Plug 'klesh/vim-fakeclip'
+Plug 'scrooloose/nerdcommenter'
+Plug 'tpope/vim-fugitive'                                         " git 功能
+Plug 'scrooloose/nerdtree'
+
+" color themes
+Plug 'morhetz/gruvbox'
+
+" syntax
+Plug 'peitalin/vim-jsx-typescript'
+Plug 'pangloss/vim-javascript'
 Plug 'lunaru/vim-less'
 Plug 'posva/vim-vue'
 Plug 'othree/html5.vim'
-Plug 'mtscout6/syntastic-local-eslint.vim'
-Plug 'pangloss/vim-javascript'
-Plug 'klesh/vim-fakeclip'
 Plug 'dag/vim-fish'
-Plug 'digitaltoad/vim-pug'
-"Plug 'ludovicchabant/vim-gutentags'
-Plug 'godlygeek/tabular'
-Plug 'plasticboy/vim-markdown'
-Plug 'triglav/vim-visual-increment'
-Plug 'jvirtanen/vim-octave'
 Plug 'vim-python/python-syntax'
-Plug 'mgedmin/coverage-highlight.vim'
-Plug 'neoclide/coc.nvim', {'branch': 'release'}
-Plug 'neoclide/coc-python', {'do': 'yarn install --frozen-lockfile'}
-Plug 'neoclide/coc-tsserver', {'do': 'yarn install --frozen-lockfile'}
-Plug 'morhetz/gruvbox'
-Plug 'peitalin/vim-jsx-typescript'
+Plug 'plasticboy/vim-markdown'
+"Plug 'digitaltoad/vim-pug'
+
+" statusline
+Plug 'liuchengxu/eleline.vim'
 call plug#end()
 
-" coc configuration, may need to run `yarn` in ~/.vim/coc-python folder
-" $ pip install --user python-language-server jedi rope
-
-
-
-" Remap keys for gotos
+" ==== coc configuration ====
 nmap <silent> gd <Plug>(coc-definition)
 nmap <silent> gy <Plug>(coc-type-definition)
 nmap <silent> gi <Plug>(coc-implementation)
@@ -89,9 +83,6 @@ nmap <silent> gr <Plug>(coc-references)
 " Highlight symbol under cursor on CursorHold
 autocmd CursorHold * silent call CocActionAsync('highlight')
 
-" Use K to show documentation in preview window
-nnoremap <silent> K :call <SID>show_documentation()<CR>
-
 " Remap for rename current word
 nmap <leader>rn <Plug>(coc-rename)
 
@@ -99,305 +90,45 @@ nmap <leader>rn <Plug>(coc-rename)
 xmap <leader>f  <Plug>(coc-format-selected)
 nmap <leader>f  <Plug>(coc-format-selected)
 
+" Use K to show documentation in preview window
 function! s:show_documentation()
+  " s:f makes function f local, use <SID>f() to call it, ! replaces existing
+  " function quitely
   if (index(['vim','help'], &filetype) >= 0)
     execute 'h '.expand('<cword>')
   else
     call CocAction('doHover')
   endif
 endfunction
+nnoremap <silent> K :call <SID>show_documentation()<CR>
 
 
-" markdown
+" ==== markdown configuration ====
 let g:vim_markdown_folding_disabled = 1
 let g:vim_markdown_math = 1
 
-" nerdtree
+
+" ==== nerdtree configuration ====
 let NERDTreeDirArrowExpandable = "+"
 let NERDTreeDirArrowCollapsible = "-"
+let NERDTreeIgnore = ['\.pyc$', '__pycache__']
 
-" python
+
+" ==== python configuration ====
 let g:python_highlight_all = 1
 
-" airline
-let g:airline_theme='bubblegum'
-let g:airline_left_sep = ''
-let g:airline_right_sep = ''
-"let g:airline_left_sep = ' '
-"let g:airline_right_sep = ' '
-let g:airline_symbols#crypt = '🔒'
-let g:airline_symbols#linenr = '¶'
-let g:airline_symbols#maxlinenr = '☰'
-let g:airline_symbols#branch = ''
-"let g:airline_symbols#paste = 'ρ'
-let g:airline_symbols#paste = 'Þ'
-"let g:airline_symbols#paste = '∥'
-"let g:airline_symbols#spell = 'Ꞩ'
-"let g:airline_symbols#notexists = '∄'
-"let g:airline_symbols#whitespace = 'Ξ'
-"
-"let g:airline_theme='luna'
 
-" CtrlP
+" ==== ctrlp configuration ====
 let g:ctrlp_user_command = ['.git', 'git ls-files -co --exclude-standard']
-"let g:ctrlp_map = '<Space><Space>'
-" NERDTree
-let NERDTreeIgnore = ['\.pyc$', '__pycache__']
-" syntastic
-" let g:syntastic_javascript_checkers = ['eslint']
-"let g:ale_python_pylint_change_directory = 0
-let g:ale_linters = {
-      \  'python': ['flake8']
-      \}
 
 
-
-" vue-vim
-" 解决跳到尾部时语法高亮不正常的问题
+" ==== vue configuration ====
+" syntax highlighting not working correctly occasionally for vue
 autocmd FileType vue syntax sync fromstart
-" 利用现有的插件对语法进行高亮
-"autocmd BufRead,BufNewFile *.vue setlocal filetype=vue.html5.javascript.less
 autocmd BufRead,BufNewFile *.vue setlocal filetype=vue
 
-" vim
-set ts=4
-set sw=4
-set listchars=eol:$,tab:->,extends:>,precedes:<,space:.,
-set list
-set nu
-set expandtab
-set hidden
-set autoindent
-set confirm
-set noundofile
-set nobackup
-set ruler                                                           " 开启游标右下角行、列显示
-set noswapfile                                                      " 关闭临时文件
-set hlsearch
-set lazyredraw
-set noshowmatch
-set laststatus=2
-let html_no_rendering=1
-set fillchars=vert:\ ,fold:-
-"highlight VertSplit guibg=Orange guifg=Black ctermbg=None ctermfg=033
-hi StatusLine cterm=NONE
 
-" keybindings
-" 从系统剪贴板复制/粘贴
-"inoremap <C-p> <ESC>"+pa
-"nnoremap <C-p> "+p
-"vnoremap <C-p> "+p
-"vnoremap <C-y> "+y
-vmap <C-y> <Plug>(fakeclip-y)
-inoremap <C-S-s> <ESC>:<C-u>:w<CR>a
-nnoremap <C-S-s> :<C-u>:w<CR>
-
-"nnoremap <Space><Space> :CtrlP<CR>
-nnoremap <Space>n :NERDTreeToggle<CR>
-nnoremap <Space>g :Grepper -tool git<CR>
-
-nnoremap <Esc><Esc> :noh<return><esc>
-nnoremap <Space>o :only<CR>
-nnoremap <Space>w <C-w><C-w>
-nnoremap <Space>q :<C-u>qall<CR>
-vnoremap <Space>p "_dP
-nnoremap <Space>e :<C-u>%s/\s\+$//g<CR>
-nnoremap <Space>s :<C-u>syntax sync fromstart<CR>
-nnoremap <Space>c :<C-u>:set cursorcolumn!<CR>
-
-nnoremap <Space>h <C-w>h
-nnoremap <Space>j <C-w>j
-nnoremap <Space>k <C-w>k
-nnoremap <Space>l <C-w>l
-nnoremap <Space>m :vertical resize +5<CR>
-nnoremap <Space>, :vertical resize -5<CR>
-nnoremap <Space>. :resize +5<CR>
-nnoremap <Space>/ :resize -5<CR>
-nnoremap <Space>d :vs<CR>
-nnoremap <Space>[ :lprev<CR>
-nnoremap <Space>] :lnext<CR>
-
-vnoremap <silent> <leader>m c<c-r>=trim(@") . '=' . trim(system('math ' . shellescape(@")))<cr><esc>
-
-" 行尾空格高亮
-highlight ExtraWhitespace ctermbg=red guibg=red
-au ColorScheme * highlight ExtraWhitespace ctermbg=red guibg=red
-au Syntax * match ExtraWhitespace /\s\+$/
-
-" iterm2 插入模式时backspace不works
-set backspace=indent,eol,start
-
-function! ReadClipboardWsl()
-  let text = system('powershell.exe -Command Get-Clipboard')
-  let text = substitute(text, "\r\n", '', 'g')
-  return text
-endfunction
-
-function! TabNewFromClipboard()
-  exec ':tabnew ' . ReadClipboardWsl()
-endfunction
-
-function! Jsonpp()
-  "exec ':%!python -m json.tool'
-  exec ':%!json_pp'
-endfunction
-
-function! DecodeHtml()
-  exec ':%s/<pre>/```\r/g'
-  exec ':%s/<\/pre>/\r```/g'
-  exec ':%s/&lt;/</g'
-  exec ':%s/&gt;/>/g'
-  exec ':%s/&amp;/\&/g'
-endfunction
-
-cnoremap <C-a> <Home>
-cnoremap <C-e> <End>
-cnoremap <C-f> <Right>
-cnoremap <C-b> <Left>
-cnoremap <C-d> <Delete>
-cnoremap <C-n> <Down>
-cnoremap <C-p> <Up>
-
-inoremap <C-a> <Home>
-inoremap <C-e> <End>
-inoremap <C-f> <Right>
-inoremap <C-b> <Left>
-inoremap <C-d> <Delete>
-inoremap <C-n> <Down>
-inoremap <C-p> <Up>
-
-noremap <C-a> <Home>
-noremap <C-e> <End>
-noremap <C-f> <Right>
-noremap <C-b> <Left>
-noremap <C-n> <Down>
-noremap <C-p> <Up>
-
-function! MathAndLiquid()
-  "" Define certain regions
-  " Block math. Look for "$$[anything]$$"
-  syn region math start=/\$\$/ end=/\$\$/
-  " inline math. Look for "$[not $][anything]$"
-  syn match math_block '\$[^$].\{-}\$'
-
-  " Liquid single line. Look for "{%[anything]%}"
-  syn match liquid '{%.*%}'
-  " Liquid multiline. Look for "{%[anything]%}[anything]{%[anything]%}"
-  syn region highlight_block start='{% highlight .*%}' end='{%.*%}'
-  " Fenced code blocks, used in GitHub Flavored Markdown (GFM)
-  syn region highlight_block start='```' end='```'
-
-  "" Actually highlight those regions.
-  hi link math Statement
-  hi link liquid Statement
-  hi link highlight_block Function
-  hi link math_block Function
-endfunction
-
-" Call everytime we open a Markdown file
-"autocmd BufRead,BufNewFile,BufEnter *.md,*.markdown call MathAndLiquid()
-
-" \vm 2 4\<Tab>
-" \begin{vmatrix}
-" <++> & <++> & <++> & <++> \\
-" <++> & <++> & <++> & <++ > \\
-" \end{vmatrix}<++>
-"
-function! Tex()
-  let mark = '\'
-  let sepr = ' '
-  let tags = {'vm': 'vmatrix', 'bm': 'bmatrix', 'mt': 'matrix', 'cs': 'cases', 'ad': 'aligned', 'al': 'align', 'ar': 'array'}
-  let text = getline('.')
-  let end = col('.')
-  let start = strridx(text, mark, end)
-  if start > -1
-    let params = strpart(text, start+1, end - start - 1)
-    let params = split(params, sepr)
-    let abbr = params[0]
-    if strlen(abbr) == 0 || !has_key(tags, abbr)
-      return
-    endif
-    let rc = params[1]
-    if !(rc>0)
-      return
-    endif
-    if len(params)>2
-      let cc = params[2]
-      if !(cc>0)
-        return
-      endif
-    else
-      let cc = 1
-    end
-
-    let prefix = repeat(' ', start)
-
-    let thecols = []
-    let i = 0
-    while i < cc
-      call add(thecols, '<++>')
-      let i += 1
-    endwhile
-    let columnsText = prefix . '  '. join(thecols, ' & ') . ' \\'
-
-    let lines = []
-    let i = 0
-    while i < rc
-      call add(lines, columnsText)
-      let i += 1
-    endwhile
-    call add(lines, prefix . '\end{' . tags[abbr] . '}<++>')
-
-    let leftPart = strpart(text, 0, start)
-    let rightPart = strpart(text, end)
-    if strlen(rightPart) > 0
-      call add(lines, prefix . rightPart)
-    endif
-    call setline(line('.'), leftPart . '\begin{' . tags[abbr] . '}')
-    call append(line('.'), lines)
-    "call append(line('.'), lines)
-  endif
-endfunction
-
-" autocmd FileType markdown
-inoremap <Bslash><Tab> <Esc>:call Tex()<Esc>a
-" Navigating with guides
-inoremap <Space><Tab> <Esc>/<++><Enter>"_c4l
-vnoremap <Space><Tab> <Esc>/<++><Enter>"_c4l
-map <Space><Tab> <Esc>/<++><Enter>"_c4l
-nmap <C-_>   <Plug>NERDCommenterToggle
-vmap <C-_>   <Plug>NERDCommenterToggle<CR>gv
-
-" Markdown setup
-autocmd FileType markdown inoremap \cs<Tab> \begin{cases}\end{cases}<++><Esc>F\i
-autocmd FileType markdown inoremap \fr<Tab> \frac{<++>}{<++>}<++><Esc>F\i
-autocmd FileType markdown inoremap `<Tab> `$$`<++><Esc>F$i
-autocmd FileType markdown inoremap $<Tab> $$<Enter>$$<Enter><++><Esc>kO
-autocmd FileType markdown inoremap \{ \{\}<++><Esc>F{a
-autocmd FileType markdown vnoremap <Space>b c__<C-r>"__<Esc>
-autocmd FileType json nnoremap <Space>f %!json_pp<Cr>
-
-function! HTML5()
-  let html = []
-  call setline(1, '<!DOCTYPE html>')
-  call add(html, '<html>')
-  call add(html, ' <head>')
-  call add(html, '   <meta charset="UTF-8">')
-  call add(html, '   <title><++></title>')
-  call add(html, ' </head>')
-  call add(html, ' <body>')
-  call add(html, ' <++>')
-  call add(html, ' </body>')
-  call add(html, '</html>')
-  call append(1, html)
-endfunction
-
-color gruvbox
-set background=dark
-highlight Normal ctermbg=None
-
-" closetag
-" dict
+" ==== closetag configuration ====
 " Disables auto-close if not in a "valid" region (based on filetype)
 let g:closetag_regions = {
     \ 'typescript.tsx': 'jsxRegion,tsxRegion',
@@ -405,9 +136,10 @@ let g:closetag_regions = {
     \ }
 let g:closetag_shortcut = '>'
 let g:closetag_filenames = "*.html,*.xhtml,*.phtml,*.js,*.vue,*.tsx"
-"
-"let g:tagalong_additional_filetypes = ['typescript.tsx']
 
+
+" ==== nerdcommenter configuration ====
+" fixing vue commenting problem
 fu! NERDCommenter_before()
   if &ft == 'vue'
     let b:isvue = 1
@@ -427,13 +159,93 @@ fu! NERDCommenter_after()
     let b:isvue = 0
   endif
 endfu
-"
-
-"fu! NERDCommenter_before()
-  "setf javascript
-"endfu
 
 
-"fu! NERDCommenter_after()
-  "setf vue
-"endfu
+" ==== general configuration ====
+set ts=4
+set sw=4
+set listchars=eol:$,tab:->,extends:>,precedes:<,space:.,
+set list
+set nu
+set expandtab
+set hidden
+set autoindent
+set confirm
+set noundofile
+set nobackup
+set ruler                                                           " 开启游标右下角行、列显示
+set noswapfile                                                      " 关闭临时文件
+set hlsearch
+set lazyredraw
+set noshowmatch
+set laststatus=2
+let html_no_rendering=1
+set fillchars=vert:\ ,fold:-
+set showcmd
+hi StatusLine cterm=NONE
+
+" 行尾空格高亮
+highlight ExtraWhitespace ctermbg=red guibg=red
+au ColorScheme * highlight ExtraWhitespace ctermbg=red guibg=red
+au Syntax * match ExtraWhitespace /\s\+$/
+
+" theme
+try
+    color gruvbox
+catch
+    color delek
+endtry
+set background=dark
+highlight Normal ctermbg=None
+
+" ==== keybinding configuration ====
+"vmap <C-y> <Plug>(fakeclip-y)
+inoremap <C-S-s> <ESC>:<C-u>:w<CR>a
+nnoremap <C-S-s> :<C-u>:w<CR>
+
+vnoremap <leader>p "_dP
+nnoremap <leader><Esc> :noh<return><esc>
+nnoremap <leader>n :NERDTreeToggle<CR>
+nnoremap <leader>g :Grepper -tool git<CR>
+nnoremap <leader>o :only<CR>
+nnoremap <leader>q :<C-u>qall<CR>
+nnoremap <leader>e :<C-u>%s/\s\+$//g<CR>
+nnoremap <leader>s :<C-u>syntax sync fromstart<CR>
+nnoremap <leader>c :<C-u>:set cursorcolumn!<CR>
+autocmd FileType json nnoremap <leader>f %!json_pp<Cr>
+
+"nnoremap <leader>m :vertical resize +5<CR>
+"nnoremap <leader>, :vertical resize -5<CR>
+"nnoremap <leader>. :resize +5<CR>
+"nnoremap <leader>/ :resize -5<CR>
+"nnoremap <leader>d :vs<CR>
+"nnoremap <leader>[ :lprev<CR>
+"nnoremap <leader>] :lnext<CR>
+"vnoremap <silent> <leader>m c<c-r>=trim(@") . '=' . trim(system('math ' . shellescape(@")))<cr><esc>
+
+" iterm2 插入模式时backspace不works
+set backspace=indent,eol,start
+
+
+function! DecodeHtml()
+  exec ':%s/<pre>/```\r/g'
+  exec ':%s/<\/pre>/\r```/g'
+  exec ':%s/&lt;/</g'
+  exec ':%s/&gt;/>/g'
+  exec ':%s/&amp;/\&/g'
+endfunction
+
+function! HTML5()
+  let html = []
+  call setline(1, '<!DOCTYPE html>')
+  call add(html, '<html>')
+  call add(html, ' <head>')
+  call add(html, '   <meta charset="UTF-8">')
+  call add(html, '   <title><++></title>')
+  call add(html, ' </head>')
+  call add(html, ' <body>')
+  call add(html, ' <++>')
+  call add(html, ' </body>')
+  call add(html, '</html>')
+  call append(1, html)
+endfunction