I was looking at code (as used in prolog_pack.pl) to query the user for a Y/N answer. This code doesn’t use line discipline whereby the input needs to be terminated by a EOL (that would be the case when reading user input via read_line_to_string/2 for example) but just gets the next character from …

[image] dtonhofer: The library for Primitive character I/O doesn’t seem to provide such a facility. did you try read_pending_codes/3 or read_pending_chars/3?

you may also want to check with_tty_raw/1, as pointed out by Jan here: [image] How does one read keyboard input using SWI-prolog without local echo, specifically the arrow keys? Help! Hi everyone, My question is old (16 years ago) … I got something in https://swi-prolog.…

Is there a way to drain STDIN by reading characters in non-blocking mode?

Help!

swi March 15, 2021, 12:37am 3

you may also want to check with_tty_raw/1, as pointed out by Jan here:

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Is there a way to drain STDIN by reading characters in non-blocking mode?

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