tv vim: isk, INTs, and comments

tv/2configs/vim.nix

@@ -66,9 +66,10 @@ let
 
     au BufRead,BufNewFile *.nix so ${pkgs.writeText "nix.vim" ''
       setf nix
+      set isk=@,48-57,_,192-255,-,'
 
       " Ref <nix/src/libexpr/lexer.l>
-      syn match INT   /[0-9]\+/
+      syn match INT   /\<[0-9]\+\>/
       syn match PATH  /[a-zA-Z0-9\.\_\-\+]*\(\/[a-zA-Z0-9\.\_\-\+]\+\)\+/
       syn match HPATH /\~\(\/[a-zA-Z0-9\.\_\-\+]\+\)\+/
       syn match SPATH /<[a-zA-Z0-9\.\_\-\+]\+\(\/[a-zA-Z0-9\.\_\-\+]\+\)*>/
@@ -80,7 +81,7 @@ let
       hi link URI Constant
 
       syn match String /"\([^"]\|\\\"\)*"/
-      syn match Comment /\s#.*/
+      syn match Comment /\(^\|\s\)#.*/
     ''}
 
     au BufRead,BufNewFile /dev/shm/* set nobackup nowritebackup noswapfile