I just noticed that a content script from my extension (rut at document start) is not executed in reading mode. Is that expected, or am I missing some permissions?
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That is expected, as reader is very special and you wouldn’t have the actual dom to interact with, and most content scripts shouldn’t be running either way. I think there was discussion on enabling add-ons to modify the output of reader mode or add functionality at one point, but I’m not sure where that was left off.
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Any change to find the link of that discussion? I’m unable to locate one in bugzilla.
I’m sure there are many useful add-ons that could be used in reader more, for example:
https://addons.mozilla.org/en-US/firefox/addon/scroll_anywhere/
or
https://addons.mozilla.org/en-US/firefox/addon/highlightall/
This could be solved by introducing new permission.