nvim: plugins: Drop vim-husk

There has not been any update to the plugin in 8 years. Just drop
it from the plugin list and incorporate it directly in our config.

nvim/.config/nvim/autoload/husk.vim

@@ -0,0 +1,39 @@
+function! husk#left()
+  let line = getcmdline()
+  let pos = getcmdpos()
+  let next = 1
+  let nextnext = 1
+  let i = 2
+  while nextnext < pos
+    let next = nextnext
+    let nextnext = match(line, '\<\S\|\>\S\|\s\zs\S\|^\|$', 0, i) + 1
+    let i += 1
+  endwhile
+  return repeat("\<Left>", pos - next)
+endfunction
+
+function! husk#abstract_right(command)
+  let line = getcmdline()
+  let pos = getcmdpos()
+  let next = 1
+  let i = 2
+  while next <= pos && next > 0
+    let next = match(line, '\<\S\|\>\S\|\s\zs\S\|^\|$', 0, i) + 1
+    let i += 1
+  endwhile
+  return repeat(a:command, next - pos)
+endfunction
+
+function! husk#right()
+  return husk#abstract_right("\<Right>")
+endfunction
+
+function! husk#del_word()
+  return husk#abstract_right("\<Right>\<BS>")
+endfunction
+
+function! husk#clear_line_after_cursor()
+  let pos = getcmdpos()
+  let line_len = strlen(getcmdline())
+  return repeat("\<Del>", line_len - pos + 1)
+endfunction

nvim/.config/nvim/lua/keymappings.lua

@@ -98,7 +98,13 @@ remap('c', '<S-Tab>', 'getcmdtype() =~ \'[?/]\' ? \'<C-t>\' : feedkeys(\'<S-Tab>
 remap('c', '<Up>'  , 'pumvisible() ? feedkeys(\'<S-Tab>\', \'int\')[1] : \'<Up>\''  , expr_opts)
 remap('c', '<Down>', 'pumvisible() ? feedkeys(\'<Tab>\'  , \'int\')[1] : \'<Down>\'', expr_opts)
 
-remap('n', '<F2>', ':TSHighlightCapturesUnderCursor<CR>', opts)
+-- Husk mappings
+remap('c', '<C-a>', '<Home>'                        , opts     )
+remap('c', '<C-e>', '<End>'                         , opts     )
+remap('c', '<C-b>', 'husk#left()'                   , expr_opts)
+remap('c', '<C-f>', 'husk#right()'                  , expr_opts)
+remap('c', '<C-d>', 'husk#del_word()'               , expr_opts)
+remap('c', '<C-k>', 'husk#clear_line_after_cursor()', expr_opts)
 
 -- After shifting a visual block, select it again
 remap('v', '<', '<gv', opts)

nvim/.config/nvim/lua/plugins.lua

@@ -9,7 +9,6 @@ require "paq" {
   'lewis6991/gitsigns.nvim'           ,
   'tpope/vim-fugitive'                ,
   'SanchayanMaity/gitlinker.nvim'     ,
-  'vim-utils/vim-husk'                ,
   'yorickpeterse/nvim-pqf'            ,
   'wellle/targets.vim'                ,
   'chrisgrieser/nvim-various-textobjs',