On 3/17/24 07:10, Paul Eggert wrote:
Although removing that "mv --swap" implementation was a win, I don't think we can simply delegate this to util-linux's exch command.
I still have some headache adding this. This stems from the fact that although mv(1) is a userland frontend for renameat(2), the user interface is different: while renameat(2) deals exactly with 2 operands, mv(1) has always been able to work on more arguments. Now, extending "exchange" to more arguments is confusing and the use is not intuitive: mv -v --exchange a b c d An "exchange" can literally only be applied to 2 files, and 'exch' is IMO fine. I have the gut feeling that we didn't think through all cases, and that some might be surprising, e.g.: $ mkdir d; echo 1 > a; echo 2 > d/a $ src/mv --exchange a a a a d/a versus $ src/mv --exchange a a a a d/a Have a nice day, Berny
