De-duplicating lines in selection

[BirkhoffLee]

Hello everyone, I was looking for a command in Helix that removes duplicate lines in selection, however I couldn't find it. I also google'd and searched in Issues and Discussions and there wasn't luck. Is it supported by Helix, or it's something yet to be implemented?

There's the solution of using pipe, however

• :pipe sort -u doesn't respect original input order
• :pipe awk '!seen[$0]++' doesn't work for an unknown reason (maybe I need to escape the characters?)
• it's tedious to type all these characters every time anyway

[mweihs]

Your awk version works for me, no escaping needed. As for your 3rd point, why not just use a keybinding, e.g.

[keys.normal]
"A-d" = [":pipe awk '!s[$0]++'"]