Some shortcuts not passed to application

[Vladimir-csp]

Expected Behavior

mcedit should receive shift+pgup/pgdown, ctrl+shift+home/end like any other mods+directions shortcuts.

Current Behavior

It receives pgup/pgdown instead and ignores ctrl+shift+home/end

Possible Solution

Steps to Reproduce (for bugs)

1. Run mcedit (editor from Midnight Commander)
2. Try selecting text with shift+pgup/pgdown or ctrl+shift+home/end

Context

TERM: xterm-256color, emulation: default

System Information

• QTerminal version: 1.4.0
• Distribution & Version: Debian testing
• Kernel: 6.5.0-5-amd64
• Qt Version: 5.15.10

[Vladimir-csp]

Also can not block select (terminal-side) in mcedit.

In other terminal emulators I could do it with ctrl+shift (ctrl for terminal block select, shift to bypass mcedit mouse handling).

Trided with ctrl+alt+shift, but that may be partially intercepted by compositor or something. Plain selecting with shift works, ctrl+shift does the same.

Can block select be remapped to ctrl instead of ctrl+alt?

[Vladimir-csp]

...also paste on middleclick is successfully initiated even when shift is not pressed (usually mcedit blocks it, but it seems that it can not do that in qterminal). No, that is normal behavior.

[yan12125]

Updating https://github.com/lxqt/qtermwidget/blob/master/lib/kb-layouts/default.keytab may fix them. Patches are welcom.

[Vladimir-csp]

What exactly needs updating? Do I need to remove references to pgup/pgdown for applications to receive them (does not seem to work), or do I need to bind some tricky escape sequences to shift+pgup/pgdown, ctrl+shift+home/end?

[yan12125]

Could you try appending this to /usr/share/qtermwidget5/kb-layouts/default.keytab?

key PgUp    +Shift+AppScreen : "some escape sequence"

The escape sequence can be checked in another terminal that works with mcedit. This is often tricky - here are some possible ways to find it:

• Using strace to see what mcedit gets upon shortcuts
• Run cat -v and hit shortcuts (the result may not be useful for mcedit as terminals can send different escape sequences to different applications)

Here I assume mcedit uses AppScreen mode, which is common for TUI applications. If not, you need to remove the following and append another line with the desired escape sequence

key PgUp    +Shift-AppScreen : scrollPageUp

[Vladimir-csp]

only strace mcedit worked, in sakura:

# shift + pgup
read(4, "\33", 1)                       = 1
read(4, "[", 1)                         = 1
read(4, "5", 1)                         = 1
read(4, ";", 1)                         = 1
read(4, "2", 1)                         = 1
read(4, "~", 1)                         = 1

# shift + pgdown
read(4, "\33", 1)                       = 1
read(4, "[", 1)                         = 1
read(4, "6", 1)                         = 1
read(4, ";", 1)                         = 1
read(4, "2", 1)                         = 1
read(4, "~", 1)                         = 1

Added this, it works:

key PgUp    +Shift+AppScreen : "\E[5;2~"                                                                                                                                                                                                                   
key PgDown  +Shift+AppScreen : "\E[6;2~"  

ctrl+shift+home/end did not work even in sakura, maybe my memory just fails me. I wonder if it is possible to guess those sequences.

[yan12125]

Cool! Feel free to open a pull request for working shortcuts.

I wonder if it is possible to guess those sequences.

Maybe try more terminals? Usually xterm supports escape sequences better, as most terminals follow escape sequences defined by xterm (that's what the environment variable TERM=xterm or TERM=xterm-256color means). If it doesn't work in xterm, I guess mcedit neees some changes.

[Vladimir-csp]

lxqt/qtermwidget#530
It does not work in xterm )

[yan12125]

Thanks! I merged the pull request for Shift+PgUp/PgDown. Issues with Ctrl+Shift+Home/End may not be caused by qterminal, so closing.