PageUp / PageDown keys do not reach tmux

[magdumnikhil]

Issue Type: Bug

Configure tmux to cycle through windows with key "Ctrl + PageUp", "Ctrl + PageDown"

bind -n C-PgDn prev
bind -n C-PgUp next

Launch tmux, create multiple windows
Issue the above key-combinations

Output: Nothing happens with Ctrl + PageUp. Ctrl-PageDown just prints the "~" character on the terminal.

Any default/user-defined keyboard shortcuts involving PageUp/PageDown related to the terminal are removed.

settings and keybindings are attached

The keyboard is set to "US QWERTY"

VS Code version: Code 1.66.2 (dfd34e8, 2022-04-11T07:46:01.075Z)
OS version: Windows_NT x64 10.0.22000
Restricted Mode: No
Remote OS version: Linux x64 5.4.0-107-generic

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz (16 x 2496)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_renderer: enabled_on video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	31.73GB (20.21GB free)
Process Argv	--crash-reporter-id 85c323a1-5d98-45e5-8818-74519d9e3b95
Screen Reader	no
VM	0%

Item	Value
Remote	SSH: 10.40.199.111
OS	Linux x64 5.4.0-107-generic
CPUs	Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (4 x 3600)
Memory (System)	62.70GB (7.58GB free)
VM	0%

Extensions (18)

Extension	Author (truncated)	Version
project-manager	ale	12.5.0
docs-view	bie	0.0.10
arm	dan	1.7.4
remote-ssh	ms-	0.78.0
remote-ssh-edit	ms-	0.80.0
remote-wsl	ms-	0.66.2
linkerscript	Zix	1.0.2
atlascode	atl	2.10.12
codealignment-vscode	cpm	2.0.19
doxdocgen	csc	1.4.0
gitlens	eam	12.0.6
todo-tree	Gru	0.0.215
cpptools	ms-	1.9.8
hexeditor	ms-	1.9.6
vscode-commons	red	0.0.6
vscode-xml	red	0.20.0
vscode-yaml	red	1.7.0
tmlanguage	Tog	0.9.0

(1 theme extension excluded)

A/B Experiments

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vsreu685:30147344
python383:30185418
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pythonvspyl392:30443607
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pythonvspyt551cf:30345471
pythonptprofiler:30281270
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pythondataviewer:30285071
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pythonvspyt200:30340761
binariesv615:30325510
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vsaa593cf:30376535
vsc1dst:30438360
pythonvs932:30410667
wslgetstarted:30449410
pythonvsnew555:30457759
vscscmwlcmt:30465135
cppdebugcf:30475217

settings.txt
keybindings.txt

[Tyriar]

With these keybindings:

{ "key": "ctrl+pagedown",         "command": "-workbench.action.nextEditor" },
{ "key": "ctrl+pageup",           "command": "-workbench.action.previousEditor" },
{ "key": "ctrl+pagedown",         "command": "-workbench.action.terminal.focusNext",
    "when": "terminalFocus && terminalHasBeenCreated && !terminalEditorFocus || terminalFocus && terminalProcessSupported && !terminalEditorFocus" },
{ "key": "ctrl+pageup",           "command": "-workbench.action.terminal.focusPrevious",
    "when": "terminalFocus && terminalHasBeenCreated && !terminalEditorFocus || terminalFocus && terminalProcessSupported && !terminalEditorFocus" },

ctrl+pageup/pagedown do get sent to the shell, but end up getting send using the same sequence as without ctrl.

pageup:        xterm.js: sending data "�[5~" (4) [27, 91, 53, 126]
ctrl+pageup:   xterm.js: sending data "�[5~" (4) [27, 91, 53, 126]
pagedown:      xterm.js: sending data "�[6~" (4) [27, 91, 54, 126]
ctrl+pagedown: xterm.js: sending data "�[6~" (4) [27, 91, 54, 126]

[magdumnikhil]

Is any workaround available?

[Tyriar]

Yes, you can use workbench.action.terminal.sendSequence to send whatever you want, example keybinding:

{ "key": "ctrl+backspace",
  "command": "workbench.action.terminal.sendSequence",
  "when": "terminalFocus",
  "args": {"text":"\u0017"} }

You'd need to figure out the right sequence to send though, I'm not sure currently.

[magdumnikhil]

Thanks for the suggestion. The following entries in the keybindings.json helped.

{
	"key": "ctrl+pageup",
	"command": "workbench.action.terminal.sendSequence",
	"args": { "text": "\u001b\u005b\u0035\u003b\u0035\u007e"},
	"when": "terminalFocus"
},
{
	"key": "ctrl+pagedown",
	"command": "workbench.action.terminal.sendSequence",
	"args": { "text": "\u001b\u005b\u0036\u003b\u0035\u007e"},
	"when": "terminalFocus"
}

In case anyone else lands here, the following is the pyhon3 code to get the sequence

key = input()

print("".join("\\u{:04x}".format(ord(k)) for k in key))

[Tyriar]

Thanks for looking up the sequence, I put a fix out upstream xtermjs/xterm.js#3761

[Tyriar]

Fixed via #148923

[roblourens]

I was trying to set this up in iTerm at first to compare, but was confused because it just doesn't work in iTerm 😁 works great in vscode