When docking/undocking my laptop, I change Xft.dpi in the X server resource database using xrdb. After that happened, I would like to inform as many applications as possible that they should re-read and apply the changed settings.
According to this answer:
Reloading the configuration is a feature that not all programs support. X resources in particular are usually read when a program starts up; there's no protocol to notify an application that it should use new resources¹. Rxvt tends towards being small, so it's no surprise that it doesn't support reloading its configuration after startup.
Firefox is a bit bigger than Rxvt therefore my question:
Q: How do I inform Firefox about a change in the X server resource database?
Related:
