I'm not asking when to underline. There are myriad references for that via a simple internet search. However, this one doesn't seem to appear anywhere...

For print-based projects....

I'm curious if space characters should be included when underlining general text for emphasis?

In other words, which of the below would be the preferred usage for an underline?

Or is this merely a more stylistic preference left to the typesetter/editor/designer?

I realize for web-based projects you want the underline to encompass an entire link, not each word. So, this really doesn't apply to anything web-based. I would honestly never use an underline for emphasis where there is also not a link for digital projects. And any failure to include a space would indicate separate links in digital delivery.

I'm not asking when to underline. There are myriad references for that via a simple internet search. However, this one doesn't seem to appear anywhere...

For print-based projects....

I'm curious if space characters should be included when underlining general text for emphasis?

In other words, which of the below would be the preferred usage for an underline?

Or is this merely a more stylistic preference left to the typesetter/editor/designer?

I realize for web-based projects you want the underline to encompass an entire link, not each word. So, this really doesn't apply to anything web-based. For digital projects, I would honestly never use an underline for emphasis where there is also not an associated link. Any failure to include a space would indicate separate links in digital delivery.