Some feeds choose to use HTML markup tags in their links and descriptions. Pango markup already provides support for a subset of this syntax which allows, for example, anchor links to function.
Relying on Pango for this means not everything will work consistently. Hence, a choice needs to be made:
Strip all markup (probably shouldn't do this)
Use a full HTML renderer (perfect markup handling but heavier than the other solutions)
Continue relying on Pango and strip markup it cannot handle (lost functionality but at least it will look nice)
Some feeds choose to use HTML markup tags in their links and descriptions. Pango markup already provides support for a subset of this syntax which allows, for example, anchor links to function.
Relying on Pango for this means not everything will work consistently. Hence, a choice needs to be made: