A lengthy discussion alluding to the pitfalls of mixing fork() arbitrarily with libraries and threads, discussing terminal sizes in the line discipline and on t

A lengthy discussion alluding to the pitfalls of mixing fork() arbitrarily with libraries and threads, discussing terminal sizes in the line discipline and on the terminal itself (although missing that these aren't necessarily the same), showing how library functions are underpinned by system calls, and basically covering the ground that led to the invention of Daniel J. Bernstein's pty tool in 1990 and others. * https://jdebp.uk/Softwares/djbwares/bernstein-ptyget.html https://jdebp.uk/Softwares/djbwares/bernstein-ptyget.html There's even scope for observation that, like the number of processes that get spawned and instructions that get executed to increment an integer shell variable by 1 (in the traditional way using expr), it's taking four extra forked processes just to write a coloured shell prompt. Hacker News comments don't get beyond the useless use of cat aside in the third paragraph. (-: