(I mainly have okular as a pdf viewer in mind.) It would be useful to be able to search a text viewed for a specific character or string in a specific font or font style. An example of what I would like to do is find an italic ‘x’, not just any ‘x’. In my example the difference is just style, upright vs. slanted/italic, but I am certainly also interested in the capability of having the search procedure being able to take into account differences in font. This feature would be especially useful when trying to search a pdf for the occurrence of a mathematical variable, which is usually denoted in a different style or font. Reproducible: Always