Delete key doesn't work in iex

[dwahyudi]

When i 'm inside iex, pressing Delete key will not delete, instead it prints out ~

Operating System: Ubuntu Vivid

Erlang/OTP 18 [erts-7.0] [source-4d83b58] [64-bit] [async-threads:10] [hipe] [kernel-poll:false]

Interactive Elixir (1.0.5) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> 3 + ~~~~4
** (SyntaxError) iex:1: invalid token: ~4

iex(1)> 

Here i want to delete 4, but instead it gives ~

[josevalim]

Do you have the same issue in the erl shell?

[dwahyudi]

@josevalim yes it also happens on erl.

I tried this as well on my remote server, Ubuntu Utopic

Erlang/OTP 18 [erts-7.0] [source-4d83b58] [64-bit] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V7.0  (abort with ^G)
1> 3 + ~4
1> 2 + ~~~~~~6

[ericmj]

If the issue also exists in erlang's shell the fix needs to happen there. You can raise the issue on erlang-bugs or erlang-questions http://erlang.org/mailman/listinfo.

[gildo]

same here

[hashd]

One can use Ctrl + d in iex instead

[epitron]

Good news! It's been fixed! erlang/otp@2c7e387

Now we just have to wait for it to slowly make its way downstream.

[xyproto]

If erlang made a new minor release, it could potentially speed things up.

[dwahyudi]

The problem remains.

Erlang (BEAM) emulator version 7.1
Compiled on Wed Sep 23 12:24:12 2015

@hashd, Ctrl + D doesn't work.

[hashd]

@dwahyudi Strange, it works for me on Ubuntu 15.04, Elixir v1.1.1 in gnome-terminal.

[dm1try]

@dwahyudi +1, it will work in any xterm-based(VT100) terminal

Ctrl-k  clear all characters after the cursor
Ctrl-w  clears word before the cursor. a word is set of characters separated by spaces
Ctrl-u  Clears all characters before the cursor
Ctrl-l  clear screen
Ctrl-d  deletes characters to the right of cursor, if no characters, logs out and closes terminal
Delete  deletes characters to the right of cursor (this may vary depending on settings)
Ctrl-h or Ctrl-8 or Ctrl-Shift-/    deletes characters to the left or the cursor
Backspace   deletes characters to the left or the cursor (this may vary depending on settings)
Ctrl-7 or Ctrl-Shift--  Removes a number? of characters from the end
ALT-Backspace   Removes words, not single chars. (same as CTRL+W)

[hashd]

@dm1try that's insightful. Thanks!

[dwahyudi]

@dm1try yep it works, Thanks 👍

but i still find delete key more natural than CTRL + D 😢

[dm1try]

but i still find delete key more natural

I totally agree, especially annoying that "DEL" prints "~" 😞