Mastodawn

Julia Evans Jul 8, 2024

entering text in the terminal is complicated https://jvns.ca/blog/2024/07/08/readline/

Entering text in the terminal is complicated

Julia Evans

Julia Evans Jul 8, 2024

someone in the replies elsewhere pointed out that Ctrl+J = 10 in the ASCII table = LF ("line feed") = Enter (because J is the 10th letter of the alphabet)

so Ctrl+J is the same as pressing enter

which I don't have any practical use for but is kind of cool

(edit: some corrections in this reply: https://pgh.social/@ben/112752235264922484)

Ben Cox (@[email protected])

@[email protected] This isn't quite right in a few ways. LF is decimal 10, ascii 0x0a. It is 10 because it's the 10th letter of the alphabet, though. But it's not the same as pressing enter except in cooked tty modes, where the terminal driver converts the return key (^M, \r, ASCII 13 / 0x0d) to a newline (^J, LF, 10/0xa) which your program then sees as its input.

pgh.social

Show thread

Julia Evans Jul 8, 2024

also someone elsewhere left a comment like "I CAN’T BELIEVE IT TOOK HER 15 YEARS TO LEARN BASIC READLINE COMMANDS". those comments are very silly and I'm going to keep writing “it took me 15 years to learn this basic thing" forever because I think it's important for people to know that it's normal to take a long time to learn “basic" things

Show thread

Shane Celis

@b0rk I just found out yesterday there are terminal extensions to get key up events in the terminal. I naively thought for the last 20 years those were already there. https://sw.kovidgoyal.net/kitty/keyboard-protocol/

Comprehensive keyboard handling in terminals

There are various problems with the current state of keyboard handling in terminals. They include: No way to use modifiers other than ctrl and alt, No way to reliably use multiple modifier keys, ot...

kitty