Issue with Control mappings

[jreybert]

When I type <Ctrl>-_, it acts like Backspace.

I do not configure any mappings in my configuration files, and I don't find any <Ctrl>-_ mapping in configuration.

Configuration:

• kitty 13.3 and 14.0 (get from https://sw.kovidgoyal.net/kitty/installer.sh)
• Centos 7.6.1810

I don't know if it related, but I also encounter conflicts between system libraries and the ones installed by kitty. I had to remove libharfbuzz.so.0 installed by kitty from my LD_LIBRARY_PATH, or I was unable to start firefox, or mate-terminal for example:

$ mate-terminal
mate-terminal: symbol lookup error: /lib64/libpangoft2-1.0.so.0: undefined symbol: hb_glib_script_from_script

[kovidgoyal]

What keyboard layout is this? And post the output from --debug-keyboard

[kovidgoyal]

And dont put the kitty libraries in LD_LIBRARY_PATH, they are meant to be used privately for kitty. They will not work with other software on your system

[jreybert]

What keyboard layout is this?

I use azerty layout.

And post the output from --debug-keyboard

In the new terminal, I only type <Ctrl-_>

$ ./bin/kitty  --debug-keyboard
Press scancode: 0x25 clean_sym: Control_L composed_sym: Control_L mods: none glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: PRESS mods: 0x0 text: '' state: 0 sent key to child
Press scancode: 0x11 clean_sym: underscore composed_sym: underscore mods: ctrl+numlock glfw_fallback_key: 56 (8) xkb_key: 56 (8)
on_key_input: glfw key: 56 native_code: 0x38 action: PRESS mods: 0x2 text: '' state: 0 sent key to child
Release scancode: 0x11 clean_sym: underscore mods: ctrl+numlock glfw_fallback_key: 56 (8) xkb_key: 56 (8)
on_key_input: glfw key: 56 native_code: 0x38 action: RELEASE mods: 0x2 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x25 clean_sym: Control_L mods: ctrl+numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: RELEASE mods: 0x2 text: '' state: 0 ignoring as keyboard mode does not allow release events

And dont put the kitty libraries in LD_LIBRARY_PATH, they are meant to be used privately for kitty. They will not work with other software on your system

I did not notice the rpath. Thanks.

[kovidgoyal]

Can't be pure azerty since it does not have an underscore key as far as I know. Must be some some modified form since the default us-keyborad based one has underscore as shift+hyphen.

You have two possibilities to fix it, either use send_text in kitty.conf with the native_code from the debug output to map it to whatever you need, or if you want it to work automatically, add a GLFW_KEY_UNDERSCORE to the kitty source code. You can see how I added GLFW_KEY_PLUS in the past and do it similarly.

[kovidgoyal]

Note that I have not tested the fix.

[jreybert]

I've tested it. The good news is that <C-_> does not acts like <Backspace> anymore. The bad news is that vim still does not trigger it.

in vim, if I add the following mapping:

map <C-_> :echomsg "<C-_> triggered"<CR>

With vim in mate-terminal, when I type <C-_>, I get the following message:

^_ triggered

With vim in kitty, I get nothing.

Comments: I tried to map other top row keyboard keys in vim: <C--> and <C-)> for example. These mappings do not work in vim, either within mate or kitty. These top row keys may have some strange behavior.

[kovidgoyal]

What does shift+underscore produce on your system?

[kovidgoyal]

In vim you will only be able to map keys that have ascii key codes,
underscore is one of those keys, parentheses and hyphens are not.

[jreybert]

Badly, I encounter another issue, which is more problematic. I can work without <C-_>, because this is a personal mapping. I remapped it on <C-y> and it is OK.

Now, vim has a builtin mapping (to switch between buffers). On azerty keyboard, to type 6, you must type <Shift-minus>. Then, to do <C-6>, you must type <Ctrl-Shift-minus>.

On kitty, it acts like it ignores the Shift key, because when I type <C-S-minus>, it reduces the font (like <C-minus> would do).

Debug:

<C-_>
Press scancode: 0x25 clean_sym: Control_L composed_sym: Control_L mods: numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: PRESS mods: 0x0 text: '' state: 0 sent key to child
Press scancode: 0x11 clean_sym: underscore composed_sym: underscore mods: ctrl+numlock glfw_fallback_key: 56 (8) xkb_key: 56 (8)
on_key_input: glfw key: 56 native_code: 0x38 action: PRESS mods: 0x2 text: '' state: 0 sent key to child
Release scancode: 0x11 clean_sym: underscore mods: ctrl+numlock glfw_fallback_key: 56 (8) xkb_key: 56 (8)
on_key_input: glfw key: 56 native_code: 0x38 action: RELEASE mods: 0x2 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x25 clean_sym: Control_L mods: ctrl+numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: RELEASE mods: 0x2 text: '' state: 0 ignoring as keyboard mode does not allow release events

<C-S-_>
Press scancode: 0x25 clean_sym: Control_L composed_sym: Control_L mods: numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: PRESS mods: 0x0 text: '' state: 0 sent key to child
Press scancode: 0x32 clean_sym: Shift_L composed_sym: Shift_L mods: ctrl+numlock glfw_key: 340 (LEFT SHIFT) xkb_key: 65505 (Shift_L)
on_key_input: glfw key: 340 native_code: 0xffe1 action: PRESS mods: 0x2 text: '' state: 0 sent key to child
Press scancode: 0x11 clean_sym: underscore composed_sym: 8 mods: ctrl+shift+numlock glfw_fallback_key: 56 (8) xkb_key: 56 (8)
Keypress matched action: nth_window
on_key_input: glfw key: 56 native_code: 0x38 action: PRESS mods: 0x3 text: '' state: 0 handled as shortcut
Release scancode: 0x11 clean_sym: underscore mods: ctrl+shift+numlock glfw_fallback_key: 56 (8) xkb_key: 56 (8)
on_key_input: glfw key: 56 native_code: 0x38 action: RELEASE mods: 0x3 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x32 clean_sym: Shift_L mods: ctrl+shift+numlock glfw_key: 340 (LEFT SHIFT) xkb_key: 65505 (Shift_L)
on_key_input: glfw key: 340 native_code: 0xffe1 action: RELEASE mods: 0x3 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x25 clean_sym: Control_L mods: ctrl+numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: RELEASE mods: 0x2 text: '' state: 0 ignoring as keyboard mode does not allow release events

<C-minus>
Press scancode: 0x25 clean_sym: Control_L composed_sym: Control_L mods: numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: PRESS mods: 0x0 text: '' state: 0 sent key to child
Press scancode: 0xf clean_sym: minus composed_sym: minus mods: ctrl+numlock glfw_key: 45 (MINUS) xkb_key: 45 (minus)
on_key_input: glfw key: 45 native_code: 0x2d action: PRESS mods: 0x2 text: '' state: 0 sent key to child
Release scancode: 0xf clean_sym: minus mods: ctrl+numlock glfw_key: 45 (MINUS) xkb_key: 45 (minus)
on_key_input: glfw key: 45 native_code: 0x2d action: RELEASE mods: 0x2 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x25 clean_sym: Control_L mods: ctrl+numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: RELEASE mods: 0x2 text: '' state: 0 ignoring as keyboard mode does not allow release events

<C-S-minus>
Press scancode: 0x25 clean_sym: Control_L composed_sym: Control_L mods: numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: PRESS mods: 0x0 text: '' state: 0 sent key to child
Press scancode: 0x32 clean_sym: Shift_L composed_sym: Shift_L mods: ctrl+numlock glfw_key: 340 (LEFT SHIFT) xkb_key: 65505 (Shift_L)
on_key_input: glfw key: 340 native_code: 0xffe1 action: PRESS mods: 0x2 text: '' state: 0 sent key to child
Press scancode: 0xf clean_sym: minus composed_sym: 6 mods: ctrl+shift+numlock glfw_key: 45 (MINUS) xkb_key: 45 (minus)
Keypress matched action: change_font_size
on_key_input: glfw key: 45 native_code: 0x2d action: PRESS mods: 0x3 text: '' state: 0 handled as shortcut
Release scancode: 0xf clean_sym: minus mods: ctrl+shift+numlock glfw_key: 45 (MINUS) xkb_key: 45 (minus)
on_key_input: glfw key: 45 native_code: 0x2d action: RELEASE mods: 0x3 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x25 clean_sym: Control_L mods: ctrl+shift+numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: RELEASE mods: 0x3 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x32 clean_sym: Shift_L mods: shift+numlock glfw_key: 340 (LEFT SHIFT) xkb_key: 65505 (Shift_L)
on_key_input: glfw key: 340 native_code: 0xffe1 action: RELEASE mods: 0x1 text: '' state: 0 ignoring as keyboard mode does not allow release events

[kovidgoyal]

C-S-minus is the key combination to reduce font size.

[jreybert]

Hm, fair enough. For that, I just have to override the reduce font size mapping in a first time. Actually I can't... So my only move would be to change the kitty_mod to something else, like ctrl-super.

It seems that I am not the first one which had this issue (#171). I will try to understand what are the causes and see if I can try anything around here (though, it seems to be a very difficult issue).

[kovidgoyal]

by the way see c2fd700

[kovidgoyal]

And you should be able to unmap it in kitty.conf with

ctrl+shift+- noop

[jreybert]

I still have issue with key mappings. I am using c2fd700 version.

• <Alt-.> in bash does not work (with azerty, this is <Alt-Shift-;>). This is a standard bash mapping to get the last parameter in history.
• <C-6> (<C-S-minus> with azerty) in vim still doesn't work, even with ctrl+shift+- noop config.
• <C-_>` still doesn't work

<Alt-Shit-;>
Press scancode: 0x40 clean_sym: Alt_L composed_sym: Alt_L mods: numlock glfw_key: 342 (LEFT ALT) xkb_key: 65513 (Alt_L)
on_key_input: glfw key: 342 native_code: 0xffe9 action: PRESS mods: 0x0 text: '' state: 0 sent key to child
Press scancode: 0x32 clean_sym: Shift_L composed_sym: Shift_L mods: alt+numlock glfw_key: 340 (LEFT SHIFT) xkb_key: 65505 (Shift_L)
on_key_input: glfw key: 340 native_code: 0xffe1 action: PRESS mods: 0x4 text: '' state: 0 sent key to child
Press scancode: 0x3b clean_sym: semicolon composed_sym: period mods: alt+shift+numlock glfw_key: 59 (SEMICOLON) xkb_key: 59 (semicolon)
on_key_input: glfw key: 59 native_code: 0x3b action: PRESS mods: 0x5 text: '' state: 0 sent key to child
Release scancode: 0x3b clean_sym: semicolon mods: alt+shift+numlock glfw_key: 59 (SEMICOLON) xkb_key: 59 (semicolon)
on_key_input: glfw key: 59 native_code: 0x3b action: RELEASE mods: 0x5 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x32 clean_sym: Shift_L mods: alt+shift+numlock glfw_key: 340 (LEFT SHIFT) xkb_key: 65505 (Shift_L)
on_key_input: glfw key: 340 native_code: 0xffe1 action: RELEASE mods: 0x5 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x40 clean_sym: Alt_L mods: alt+numlock glfw_key: 342 (LEFT ALT) xkb_key: 65513 (Alt_L)
on_key_input: glfw key: 342 native_code: 0xffe9 action: RELEASE mods: 0x4 text: '' state: 0 ignoring as keyboard mode does not allow release events

<C-Shift-minus>
Release scancode: 0x85 clean_sym: Super_L mods: super+numlock glfw_key: 343 (LEFT SUPER) xkb_key: 65515 (Super_L)
Press scancode: 0x25 clean_sym: Control_L composed_sym: Control_L mods: numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: PRESS mods: 0x0 text: '' state: 0 sent key to child
Press scancode: 0x32 clean_sym: Shift_L composed_sym: Shift_L mods: ctrl+numlock glfw_key: 340 (LEFT SHIFT) xkb_key: 65505 (Shift_L)
on_key_input: glfw key: 340 native_code: 0xffe1 action: PRESS mods: 0x2 text: '' state: 0 sent key to child
Press scancode: 0xf clean_sym: minus composed_sym: 6 mods: ctrl+shift+numlock glfw_key: 45 (MINUS) xkb_key: 45 (minus)
on_key_input: glfw key: 45 native_code: 0x2d action: PRESS mods: 0x3 text: '' state: 0 sent key to child
Release scancode: 0xf clean_sym: minus mods: ctrl+shift+numlock glfw_key: 45 (MINUS) xkb_key: 45 (minus)
on_key_input: glfw key: 45 native_code: 0x2d action: RELEASE mods: 0x3 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x25 clean_sym: Control_L mods: ctrl+shift+numlock glfw_key: 341 (LEFT CONTROL) xkb_key: 65507 (Control_L)
on_key_input: glfw key: 341 native_code: 0xffe3 action: RELEASE mods: 0x3 text: '' state: 0 ignoring as keyboard mode does not allow release events
Release scancode: 0x32 clean_sym: Shift_L mods: shift+numlock glfw_key: 340 (LEFT SHIFT) xkb_key: 65505 (Shift_L)
on_key_input: glfw key: 340 native_code: 0xffe1 action: RELEASE mods: 0x1 text: '' state: 0 ignoring as keyboard mode does not allow release events

[kovidgoyal]

I dont understand what you are saying. According to that log, when you press alt+shift+; the keys kitt receives are alt+shift+; not alt+. so your keyboard layout doesn't appear to be working. If for some reason you want alt+shift+; to send the same bytes as alt+, use send_text for it in kitty.conf, like this:

map alt+shift+; send_text all \x1b\x2e

[jreybert]

What I mean is that <Alt-Shift-;> works in other terminals, bash reacts like it receives <Alt-.>.

Bash mapping is <Alt-.>. Since . (dot) is not a direct key on azerty mapping, but accessible through a modifier (Shift + semicolon), it seems reasonable that bash receives <Alt-.> code. I suspect the problem I have in vim with <C-6> is the same.

I wonder how terminals handle this kind of behavior. I understand this can be nightmare to manage this kind of keyboard specific behavior. But this is the first time such standard mapping do not work out of the box.

I will take a look on mate-terminal source code, and try to to understand how they manage this.

[kovidgoyal]

@gsker What nonsense. Application private libraries such as those used by the kitty binary build are loaded using rpath. Putting them in LD_LIBRARY_PATH would mean that any application launched from within kitty would also use them, potentially breaking it, just as @jreybert found.

[gsker]

Truly I am ignorant. I deleted my nonsense comment.