Created attachment 8783 screenshot with red error highlight of field Steps: 1. right-click on Clock in panel 2. click Properties in context menu 3. under Clock Options, select 'Custom Format' in Format drop down list 4. enter in %D into the text field In panel 4.12.2 (Xubuntu 18.04) and 4.13.6 (Xubuntu 19.10), the entire text of the Clock with disappear. In 4.13.6, the text field will also turn red to indicate an error, though the documentation clearly states that %D is for "date; same as %m/%d/%y". http://docs.xfce.org/help.php?version=4.12&locale=en_US&component=xfce4-panel&page=clock
Seems more are affected as mentioned here - "The %D, %U and %W conversions are not supported, nor is the 'E' modifier." https://developer.gnome.org/glib/stable/glib-GDateTime.html#g-date-time-format
Yeah, the docs need to be updated in this case. If you have a full list of characters I can go ahead and do that.
Okay I checked them all and other than the ones already mentioned, only the %N (nanoseconds) didnt work.
Thanks for checking, fixed in both: https://docs.xfce.org/xfce/xfce4-panel/4.12/clock#label_and_tooltip_markup and https://docs.xfce.org/xfce/xfce4-panel/clock#label_and_tooltip_markup