Handling selection manually, rather than relying on native web selection, will fix a bunch of issues that are introduced by the input helper text area, such as #68, #69 as well as:

• Double clicking on the prompt line being flaky due to focus shifting from .xterm to the text area.
• Double clicking on a URL/path to highlight the whole path (ie. don't use / and similar chars as separators)
• Selecting and copying multiple pages of the buffer
• Making the selection's line height exact so there are never any gaps between lines
• Don't drop the selection when there's a content change or viewport scroll text-selection is lost when data is written outside of the viewport #468 (comment)