[nvim] apparently usage of l: inside functions is entirely optional

nvim/autoload/airline/themes/dotfiles.vim

@@ -10,9 +10,9 @@ let s:palette = {
 
 let s:colors = g:dotfiles_colorscheme_base16_colors
 function! s:base16_color(fg, bg)
-  let l:fg = s:colors[a:fg]
-  let l:bg = s:colors[a:bg]
-  return [l:fg.gui, l:bg.gui, l:fg.cterm, l:bg.cterm]
+  let fg = s:colors[a:fg]
+  let bg = s:colors[a:bg]
+  return [fg.gui, bg.gui, fg.cterm, bg.cterm]
 endfunction
 
 let s:section_a = s:base16_color(0x1, 0xB)

nvim/autoload/dotfiles/indent_motion.vim

@@ -2,48 +2,48 @@
 " A motion for moving over enclosing indentation blocks. Primarily intended
 " for reverse-engineering CrossCode.
 
-function dotfiles#indent_motion#run(direction)
-  let l:cursor_linenr = line(".")
-  let l:max_linenr = line("$")
+function dotfiles#indent_motion#run(direction) abort
+  let cursor_linenr = line(".")
+  let max_linenr = line("$")
 
-  let l:retry = 0
-  while l:retry <# 2
-    let l:retry += 1
+  let retry = 0
+  while retry <# 2
+    let retry += 1
 
-    let l:base_linenr = l:cursor_linenr
-    let l:base_indent = 0
-    while 1 <=# l:base_linenr && l:base_linenr <=# l:max_linenr
-      let l:base_indent = dotfiles#indent_motion#indent_level_of(l:base_linenr)
-      if l:base_indent >=# 0
+    let base_linenr = cursor_linenr
+    let base_indent = 0
+    while 1 <=# base_linenr && base_linenr <=# max_linenr
+      let base_indent = dotfiles#indent_motion#indent_level_of(base_linenr)
+      if base_indent >=# 0
         break
       endif
-      let l:base_linenr += a:direction
+      let base_linenr += a:direction
     endwhile
 
-    let l:target_linenr = l:base_linenr
+    let target_linenr = base_linenr
 
-    let l:curr_linenr = l:base_linenr + a:direction
-    let l:prev_indent = l:base_indent
-    while 1 <=# l:curr_linenr && l:curr_linenr <=# l:max_linenr
-      let l:indent = dotfiles#indent_motion#indent_level_of(l:curr_linenr)
+    let curr_linenr = base_linenr + a:direction
+    let prev_indent = base_indent
+    while 1 <=# curr_linenr && curr_linenr <=# max_linenr
+      let indent = dotfiles#indent_motion#indent_level_of(curr_linenr)
 
-      if l:indent >=# 0
-        if l:indent <# l:base_indent
+      if indent >=# 0
+        if indent <# base_indent
           break
         else
-          let l:target_linenr = l:curr_linenr
+          let target_linenr = curr_linenr
         endif
-      elseif l:base_indent ==# 0 && l:prev_indent ==# 0
+      elseif base_indent ==# 0 && prev_indent ==# 0
         break
       endif
 
-      let l:prev_indent = l:indent
-      let l:curr_linenr += a:direction
+      let prev_indent = indent
+      let curr_linenr += a:direction
     endwhile
 
-    if l:target_linenr ==# l:cursor_linenr
-      let l:cursor_linenr += a:direction
-      if 1 <=# l:cursor_linenr && l:cursor_linenr <=# l:max_linenr
+    if target_linenr ==# cursor_linenr
+      let cursor_linenr += a:direction
+      if 1 <=# cursor_linenr && cursor_linenr <=# max_linenr
         continue
       endif
     endif
@@ -51,7 +51,7 @@ function dotfiles#indent_motion#run(direction)
     break
   endwhile
 
-  execute "normal! " . l:target_linenr . "G^"
+  execute "normal! " . target_linenr . "G^"
 endfunction
 
 " <https://github.com/kana/vim-textobj-indent/blob/deb76867c302f933c8f21753806cbf2d8461b548/autoload/textobj/indent.vim#L120-L127>

nvim/autoload/dotfiles/utils.vim

@@ -1,6 +1,6 @@
 function dotfiles#utils#array_remove_element(array, element)
-  let l:index = index(a:array, a:element)
-  if l:index >= 0
-    call remove(a:array, l:index)
+  let index = index(a:array, a:element)
+  if index >= 0
+    call remove(a:array, index)
   endif
 endfunction

nvim/colors/dotfiles.vim

@@ -24,23 +24,23 @@
 
   let s:colors = g:dotfiles_colorscheme_base16_colors
   function s:hi(group, fg, bg, attr, guisp)
-    let l:args = ''
+    let args = ''
     if a:fg isnot ''
-      let l:fg = s:is_number(a:fg) ? s:colors[a:fg] : {'gui': a:fg, 'cterm': a:fg}
-      let l:args .= ' guifg=' . l:fg.gui . ' ctermfg=' . l:fg.cterm
+      let fg = s:is_number(a:fg) ? s:colors[a:fg] : {'gui': a:fg, 'cterm': a:fg}
+      let args .= ' guifg=' . fg.gui . ' ctermfg=' . fg.cterm
     endif
     if a:bg isnot ''
-      let l:bg = s:is_number(a:bg) ? s:colors[a:bg] : {'gui': a:bg, 'cterm': a:bg}
-      let l:args .= ' guibg=' . l:bg.gui . ' ctermbg=' . l:bg.cterm
+      let bg = s:is_number(a:bg) ? s:colors[a:bg] : {'gui': a:bg, 'cterm': a:bg}
+      let args .= ' guibg=' . bg.gui . ' ctermbg=' . bg.cterm
     endif
     if a:attr isnot ''
-      let l:args .= ' gui=' . a:attr . ' cterm=' . a:attr
+      let args .= ' gui=' . a:attr . ' cterm=' . a:attr
     endif
     if a:guisp isnot ''
-      let l:guisp = s:is_number(a:guisp) ? s:colors[a:guisp].gui : a:guisp
-      let l:args .= ' guisp=' . l:guisp
+      let guisp = s:is_number(a:guisp) ? s:colors[a:guisp].gui : a:guisp
+      let args .= ' guisp=' . guisp
     endif
-    exec 'hi' a:group l:args
+    exec 'hi' a:group args
   endfunction
 " }}}
 

nvim/plugin/editing.vim

@@ -163,10 +163,10 @@ set commentstring=//%s
 
   " * and # in the Visual mode will search the selected text
   function! s:VisualStarSearch(search_cmd)
-    let l:tmp = @"
+    let tmp = @"
     normal! y
     let @/ = '\V' . substitute(escape(@", a:search_cmd . '\'), '\n', '\\n', 'g')
-    let @" = l:tmp
+    let @" = tmp
   endfunction
   " HACK: my mappings are added on VimEnter to override mappings from the
   " vim-indexed-search plugin

nvim/plugin/files.vim

@@ -52,12 +52,12 @@ nnoremap <silent><expr> <CR> empty(&buftype) ? ":write<bar>wall\<CR>" : "\<CR>"
   " DiffWithSaved {{{
     " Compare current buffer with the actual (saved) file on disk
     function s:DiffWithSaved()
-      let l:filetype = &filetype
+      let filetype = &filetype
       diffthis
       vnew | read # | normal! ggdd
       diffthis
       setlocal buftype=nofile bufhidden=wipe nobuflisted noswapfile readonly nomodifiable
-      let &filetype = l:filetype
+      let &filetype = filetype
     endfunction
     command DiffWithSaved call s:DiffWithSaved()
   " }}}
@@ -100,9 +100,9 @@ nnoremap <silent><expr> <CR> empty(&buftype) ? ":write<bar>wall\<CR>" : "\<CR>"
     " argument list, so it doesn't play well with Obsession.vim because it
     " saves the argument list in the session file.
     function s:EditGlob(...)
-      for l:glob in a:000
-        for l:name in glob(l:glob, 0, 1)
-          execute 'edit' fnameescape(l:name)
+      for glob in a:000
+        for name in glob(glob, 0, 1)
+          execute 'edit' fnameescape(name)
         endfor
       endfor
     endfunction
@@ -135,31 +135,31 @@ nnoremap <silent><expr> <CR> empty(&buftype) ? ":write<bar>wall\<CR>" : "\<CR>"
   " create directory {{{
     " Creates the parent directory of the file if it doesn't exist
     function s:CreateDirOnSave()
-      let l:file = expand('<afile>')
+      let file = expand('<afile>')
       " check if this is a regular file and its path is not a URL
-      if empty(&buftype) && !s:IsUrl(l:file)
-        let l:dir = fnamemodify(l:file, ':h')
-        if !isdirectory(l:dir) | call mkdir(l:dir, 'p') | endif
+      if empty(&buftype) && !s:IsUrl(file)
+        let dir = fnamemodify(file, ':h')
+        if !isdirectory(dir) | call mkdir(dir, 'p') | endif
       endif
     endfunction
   " }}}
 
   " fix whitespace {{{
     function s:FixWhitespaceOnSave()
-      let l:pos = getpos('.')
+      let pos = getpos('.')
       " remove trailing whitespace
       keeppatterns %s/\s\+$//e
       " remove trailing newlines
       keeppatterns %s/\($\n\s*\)\+\%$//e
-      call setpos('.', l:pos)
+      call setpos('.', pos)
     endfunction
   " }}}
 
   " auto-format with Coc.nvim {{{
     let g:coc_format_on_save_ignore = []
     function s:FormatOnSave()
-      let l:file = expand('<afile>')
-      if IsCocEnabled() && !s:IsUrl(l:file) && index(g:coc_format_on_save_ignore, &filetype) < 0
+      let file = expand('<afile>')
+      if IsCocEnabled() && !s:IsUrl(file) && index(g:coc_format_on_save_ignore, &filetype) < 0
         silent CocFormat
       endif
     endfunction

nvim/plugin/interface.vim

@@ -41,18 +41,18 @@ endif
 
   " Bbye with confirmation, or fancy buffer closer {{{
     function s:CloseBuffer(cmd) abort
-      let l:cmd = a:cmd
+      let cmd = a:cmd
       if &modified
-        let l:answer = confirm("Save changes?", "&Yes\n&No\n&Cancel")
-        if l:answer ==# 1      " Yes
+        let answer = confirm("Save changes?", "&Yes\n&No\n&Cancel")
+        if answer ==# 1      " Yes
           write
-        elseif l:answer ==# 2  " No
-          let l:cmd .= '!'
+        elseif answer ==# 2  " No
+          let cmd .= '!'
         else                   " Cancel/Other
           return
         endif
       endif
-      execute l:cmd
+      execute cmd
     endfunction
   " }}}
 
@@ -108,19 +108,19 @@ endif
   let g:airline#extensions#tabline#left_alt_sep = ''
 
   function StatusLine_filesize()
-    let l:bytes = getfsize(expand('%'))
-    if l:bytes < 0 | return '' | endif
+    let bytes = getfsize(expand('%'))
+    if bytes < 0 | return '' | endif
 
-    let l:factor = 1
-    for l:unit in ['B', 'K', 'M', 'G']
-      let l:next_factor = l:factor * 1024
-      if l:bytes < l:next_factor
-        let l:number_str = printf('%.2f', (l:bytes * 1.0) / l:factor)
+    let factor = 1
+    for unit in ['B', 'K', 'M', 'G']
+      let next_factor = factor * 1024
+      if bytes < next_factor
+        let number_str = printf('%.2f', (bytes * 1.0) / factor)
         " remove trailing zeros
-        let l:number_str = substitute(l:number_str, '\v\.?0+$', '', '')
-        return l:number_str . l:unit
+        let number_str = substitute(number_str, '\v\.?0+$', '', '')
+        return number_str . unit
       endif
-      let l:factor = l:next_factor
+      let factor = next_factor
     endfor
   endfunction
   call airline#parts#define('filesize', { 'function': 'StatusLine_filesize' })