Fix freeze when requesting clipboard image from our own window #83970
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes #83949.
When requesting clipboard contents from the current window, the
SelectionNotify
event is never received, which causes a freeze. I'm not sure if that's expected X11 behavior or a bug in the selection logic. Either way, the text clipboard avoids this problem by handling the request without involving the X11 clipboard system, so here I've done something similar. Since we don't support putting images on the clipboard (yet 🤞), I just early-exit in the selection logic.