mleech@bcarh342.bnr.ca (Marcus Leech) (05/09/90)
I didn't want to clutter up comp.unix.wizards with this one. Can someone explain to me the mechanism used by the BSD4.3 CSH to implement file completion, given that, as far as I can tell, it runs the TTY in COOKED mode? I have Apollos and HP9000/3xx with the BSD4.3 CSH. Both systems have file completion, but I can't figure out HOW the CSH gets to see the ESC char given that it runs the TTY in COOKED mode. Someone care to enlighthen me? I looked for an "alternate" line-discipline, but CSh uses the default regular line-discipline. On the HP, there's no V7ish "alternate line-terminator character" that it could be setting to ESC. I'm quite puzzled. ----------------- Marcus Leech, 4Y11 Bell-Northern Research |opinions expressed mleech@bnr.ca P.O. Box 3511, Stn. C |are my own, and not VE3MDL@VE3JF.ON.CAN.NA Ottawa, ON, CANADA |necessarily BNRs
net@tub.UUCP (Oliver Laumann) (05/09/90)
In article <1990May8.222108.23839@bnrgate.bnr.ca> mleech@bcarh342.bnr.ca (Marcus Leech) writes: > Can someone explain to me the mechanism used by the BSD4.3 CSH > to implement file completion, given that, as far as I can tell, > it runs the TTY in COOKED mode? I have Apollos and HP9000/3xx > with the BSD4.3 CSH. Both systems have file completion, but I > can't figure out HOW the CSH gets to see the ESC char given that > it runs the TTY in COOKED mode. Someone care to enlighthen me? It's implemented by means of the secondary input delimiter character (`t_brkc' in the `tchars' structure; see "man 4 tty"). When this field is set to a character other than `-1', this character acts the same way newline does (i.e. it is echoed, and then the current input line is made available to the program). -- Oliver Laumann net@TUB.BITNET net@tub.cs.tu-berlin.de net@tub.UUCP