On Thu, Feb 13, 2025 at 02:45:39PM +0800, lilydjwg wrote: > In the past I can run `cat` without any arguments and it prints > whatever I type at the terminal. However since 9.6, `cat` reports the > following error: > > cat: -: input file is output file
Ah, I find it's not always reproducible, and a strace reveals that the stdout flags are different: Erroring cat (in my existing shell session): fcntl(1</dev/pts/5<char 136:5>>, F_GETFL) = 0x402 (flags O_RDWR|O_APPEND) Working cat (in a new shell session): fcntl(1</dev/pts/11<char 136:11>>, F_GETFL) = 0x2 (flags O_RDWR) I'm using zsh, and this issue starts to occur after I do a tab completion (in my case, type "cat" and then tab). Other users report that some fish completion can also cause this issue. The terminal in use itself seems to not matter. I'm using GNOME Terminal, inside and outside tmux. -- Best regards, lilydjwg
