Re: Escape delay

Posted in 1995

Bruce Momjian — Thu, 2 Feb 1995 15:54:40 GMT — source: Informix-list mailing list archive (1991-1998)

Chris Stone (chriss@brttsg.demon.co.uk) wrote: : I am curious about this also. The delay seems to only occur in VT-nnn : mode, including XTerm. There is no delay when using Wyse-nn emulation : however... I have checked termcap/info and can see nothing obvious. Many terminals use the escape code as a lead-in to varous key sequences. For example, the up arrow key generates ESC-[-A on an ANSI/VT* terminal. Informix must determine from the stream of characters whether you typed an escape, or an arrow key, hence it must wait a short period of time after receiving an escape code to see if anything else is going to arrive. (There is an 8-bit ANSI/VT* mode which sets the high bit rather than sending an escape key, but it is not used very often.) -- Bruce Momjian | 830 Blythe Avenue root@candle.pha.pa.us | Drexel Hill, Pennsylvania 19026 + If your life is a hard drive, | (610) 353-9879(w) + Christ can be your backup. | (610) 853-3000(h)