How to select text beyond the visible text?

[0xferrous]

Scenario:

1. cat a long hex string that exceeds the visible window even after wrapping
2. double click
3. this selects all the text but only what is visible

By default behavior, it should select the whole word which is the full hex string instead of just the visible part.
i.e. i cannot copy the hex string if it spills out of current window's view

[kovidgoyal]

That's by design. Double clicking selecting offscreen contents means you can never know what has actually been selected without scrolling. If you need to select for than a screens worth of content simply use any of the other selection methods such as drag select or right click to extend selection.

[0xferrous]

They(mouse drag/right click and drag) are not very well suited for when the string to select is too big, also bigger the text, harder it is to ensure the boundary selection is accurate. This is not just the case for bigger strings only either, it is also a problem when you are using the splits layout and you have a small split(alternative is to temporarily switch to stack layout) or if your window itself is small and not taking up the whole size of your display, etc.

But if no one has reported inconvenience about this maybe its not that big of a problem for everyone. But only way I can think of accurately copying text would be piping it to vim and then using visual mode and b/e for quicker boundary selection and yanking it.