vim: Add autohl and array converter plugins

.vim/plugin/autohl.vim

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+" Highlight all instances of word under cursor, when idle.
+" Useful when studying strange source code.
+" Type z/ to toggle highlighting on/off.
+nnoremap z/ :if AutoHighlightToggle()<Bar>set hls<Bar>endif<CR>
+function! AutoHighlightToggle()
+  let @/ = ''
+  if exists('#auto_highlight')
+    au! auto_highlight
+    augroup! auto_highlight
+    setl updatetime=4000
+    echo 'Highlight current word: off'
+    return 0
+  else
+    augroup auto_highlight
+      au!
+      au CursorHold * let @/ = '\V\<'.escape(expand('<cword>'), '\').'\>'
+    augroup end
+    setl updatetime=500
+    echo 'Highlight current word: ON'
+    return 1
+  endif
+endfunction

.vim/plugin/convert.vim

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+ " convert rows of numbers or text (as if pasted from excel column) to a tuple
+function! ToTupleFunction() range
+    silent execute a:firstline . "," . a:lastline . "s/^/'/"
+    silent execute a:firstline . "," . a:lastline . "s/$/',/"
+    silent execute a:firstline . "," . a:lastline . "join"
+    silent execute "normal I("
+    silent execute "normal $xa)"
+    silent execute "normal ggVGYY"
+endfunction
+command! -range ToTuple <line1>,<line2> call ToTupleFunction()
+
+" convert rows of numbers or text (as if pasted from excel column) to an array
+function! ToArrayFunction() range
+    silent execute a:firstline . "," . a:lastline . "s/^/'/"
+    silent execute a:firstline . "," . a:lastline . "s/$/',/"
+    silent execute a:firstline . "," . a:lastline . "join"
+    silent execute "normal I["
+    silent execute "normal $xa]"
+endfunction
+command! -range ToArray <line1>,<line2> call ToArrayFunction()
+
+