(u.pos) add more utility functions

lua/u/pos.lua

@@ -41,6 +41,18 @@ function Pos.new(bufnr, lnum, col, off)
   return pos
 end
 
+--- @param bufnr? number
+--- @param lnum0 number 1-based
+--- @param col0 number 1-based
+--- @param off? number
+function Pos.from00(bufnr, lnum0, col0, off) return Pos.new(bufnr, lnum0 + 1, col0 + 1, off) end
+
+--- @param bufnr? number
+--- @param lnum1 number 1-based
+--- @param col0 number 1-based
+--- @param off? number
+function Pos.from10(bufnr, lnum1, col0, off) return Pos.new(bufnr, lnum1, col0 + 1, off) end
+
 function Pos.invalid() return Pos.new(0, 0, 0, 0) end
 
 function Pos.__lt(a, b) return a.lnum < b.lnum or (a.lnum == b.lnum and a.col < b.col) end
@@ -110,6 +122,11 @@ function Pos:eol() return Pos.from_eol(self.bufnr, self.lnum) end
 --- @param pos string
 function Pos:save_to_pos(pos) vim.fn.setpos(pos, { self.bufnr, self.lnum, self.col, self.off }) end
 
+--- @param winnr? integer
+function Pos:save_to_cursor(winnr)
+  vim.api.nvim_win_set_cursor(winnr or 0, { self.lnum, self.col - 1 })
+end
+
 --- @param mark string
 function Pos:save_to_mark(mark)
   local p = self:as_real()