Revert "improve selection-routine."

This reverts commit ab46117.

lua/luasnip/util/select.lua

@@ -57,25 +57,29 @@ local function restore_registers(restore_data)
 	end
 end
 
--- subtle: `:lua` exits VISUAL, which means that the '< '>-marks (which we need
--- in pre_cut) will be set correctly!
+-- subtle: `:lua` exits VISUAL, which means that the '< '>-marks will be set correctly!
 -- Afterwards, we can just use <cmd>lua, which does not change the mode.
---
--- Also: yank to z, and then cut to blackhole. This is preferable to just
--- cutting to z immediately since it affects fewer registers.
 M.select_keys =
-	[[:lua require("luasnip.util.select").pre_cut()<Cr>gv"zygv"_s<cmd>lua require('luasnip.util.select').post_cut("z")<Cr>]]
+	[[:lua require("luasnip.util.select").pre_cut()<Cr>gv"zs<cmd>lua require('luasnip.util.select').post_cut("z")<Cr>]]
 
 local saved_registers
 local lines
 local start_line, start_col, end_line, end_col
 local mode
 function M.pre_cut()
 	-- store registers so we don't change any of them.
-	-- Since we yank to a named register and cut to the blackhole, only the
-	-- unnamed- and the z-register are changed (yank to named does not affect 0 or 1-9)
 	saved_registers = store_registers(
 		"",
+		"1",
+		"2",
+		"3",
+		"4",
+		"5",
+		"6",
+		"7",
+		"8",
+		"9",
+		"-",
 		"z"
 	)