- fmt_resize (&v->print, new_width);
- fmt_resize (&v->write, new_width);
+ if (fmt_resize (&v->print, new_width))
+ traits |= VAR_TRAIT_PRINT_FORMAT;
+
+ if (fmt_resize (&v->write, new_width))
+ traits |= VAR_TRAIT_WRITE_FORMAT;
+
+ if (v->width != new_width)
+ {
+ v->width = new_width;
+ traits |= VAR_TRAIT_WIDTH;
+ }
+
+ if (print)
+ {
+ var_set_print_format_quiet (v, print);
+ traits |= VAR_TRAIT_PRINT_FORMAT;
+ }
+
+ if (write)
+ {
+ var_set_write_format_quiet (v, write);
+ traits |= VAR_TRAIT_WRITE_FORMAT;
+ }
+
+ if (traits != 0)
+ dict_var_changed (v, traits, ov);
+}
+
+/* Changes the width of V to NEW_WIDTH.
+ This function should be used cautiously. */
+void
+var_set_width (struct variable *v, int new_width)
+{
+ const int old_width = v->width;
+
+ if (old_width == new_width)
+ return;