How to show selected list items in preview window

[rbusfield]

I have a selected list of dozens of items with many different filter string iterations. In the end, I have many selections. How can I show the list in the preview window.

[LangLangBart]

Placeholder	Description
{}	current line
{n}	current line number (zero index)
{q} /{fzf:query}	current query
{fzf:prompt}	current prompt
{fzf:action}	name of the last action performed

Placeholder expression flags	Description
+	space-separated list of the selected lines
f	temporary file
s	preserve whitespace

Try using placeholders with the --preview flag.
In your example, displaying all selected items from your list in the preview should work with the following flag:

# Run the command 'select' some items and notice the preview will show one selection per line.
# '{+f}' gives you the path to the temporary file where your selected lines are stored, thus the 'cat' command.
seq 12 | fzf --preview 'cat {+f}' --multi

[rbusfield]

Answered in #3574