cursor position absolute needs to ignore all the offset stuff

src/Window.zig

@@ -706,13 +706,7 @@ pub fn setCursorUp(self: *Window, amount: u16) !void {
 }
 
 pub fn setCursorCol(self: *Window, col: u16) !void {
-    if (self.terminal.modes.origin == 1) {
-        // TODO
-        log.err("setCursorCol: implement origin mode", .{});
-        unreachable;
-    }
-
-    self.terminal.setCursorPos(self.terminal.screen.cursor.y + 1, col);
+    self.terminal.setCursorColAbsolute(col);
 }
 
 pub fn setCursorRow(self: *Window, row: u16) !void {

src/terminal/Terminal.zig

@@ -463,6 +463,21 @@ pub fn setCursorPos(self: *Terminal, row_req: usize, col_req: usize) void {
     self.screen.cursor.pending_wrap = false;
 }
 
+/// Move the cursor to column `col_req` (1-indexed) without modifying the row.
+/// If `col_req` is 0, it is changed to 1. If `col_req` is greater than the
+/// total number of columns, it is set to the right-most column.
+///
+/// If cursor origin mode is set, the cursor row will be set inside the
+/// current scroll region.
+pub fn setCursorColAbsolute(self: *Terminal, col_req: usize) void {
+    // TODO: test
+
+    assert(self.modes.origin == 0); // TODO
+
+    const col = if (col_req == 0) 1 else col_req;
+    self.screen.cursor.x = @minimum(self.cols, col) - 1;
+}
+
 /// Erase the display.
 /// TODO: test
 pub fn eraseDisplay(