Unexpected space between PowerLine Symbols on Integrated Terminal

[fluentmoheshwar]

Type: Bug

1. Install starship
2. Use this starship config

format = """
[](#182C61)\
$username\
[](fg:#182C61 bg:#01579B)\
$directory\
[](fg:#01579B bg:#16a085)\
$git_branch\
$git_status\
[](fg:#16a085 bg:#1B5E20)\
$c\
$python\
$elixir\
$elm\
$golang\
$gradle\
$haskell\
$java\
$julia\
$nodejs\
$nim\
$rust\
$scala\
[](fg:#1B5E20 bg:#2980b9)\
$docker_context\
[](fg:#2980b9 bg:#3F51B5)\
$time\
[](fg:#3F51B5 bg:#1A237E)\
$cmd_duration\
[](fg:#1A237E bg:#2c3e50)\
$status\
[ ](fg:#2c3e50)\
"""
command_timeout = 5000
scan_timeout = 70

[username]
show_always = true
style_user = "bg:#182C61"
style_root = "bg:#182C61"
format = "[󰀉 $user ]($style)"
disabled = false


[directory]
style = "bg:#01579B"
format = "[ 󰉋 $path ]($style)"
truncation_length = 3
truncation_symbol = "…/"


[c]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[python]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"


[elixir]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[elm]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[git_branch]
symbol = ""
style = "bg:#16a085 fg:#000000"
format = "[ $symbol $branch ]($style)"

[git_status]
style = "bg:#16a085 fg:#000000"
format = "[$all_status$ahead_behind ]($style)"

[golang]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[gradle]
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[haskell]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[java]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[julia]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[nodejs]
symbol = ""
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[nim]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[rust]
symbol = ""
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[scala]
symbol = " "
style = "bg:#1B5E20"
format = "[ $symbol ($version) ]($style)"

[docker_context]
symbol = " "
style = "bg:#2980b9"
format = "[ $symbol $context ]($style) $path"

[time]
disabled = false
time_format = "%r" # Hour:Minute:Seconds AM/PM Format
style = "bg:#3F51B5 fg:#000000"
format = "[ 󰥔 $time ]($style)"

[cmd_duration]
style = "bg:#1A237E"
min_time = 500
format = "[ 󰅒 took: $duration ]($style)"

[status]
style = "bg:#2c3e50"
symbol = "💔 "
success_symbol = "❤️"
format = "[ $symbol$common_meaning$signal_name$maybe_int ]($style)"
map_symbol = true
disabled = false

3. Configure PowerShell to use starship
4. Open PowerShell using Integrated Terminal
5. See Unexpected space between PowerLine Symbols on Integrated Terminal

VS Code version: Code 1.82.1 (6509174, 2023-09-08T08:45:05.575Z)
OS version: Windows_NT x64 10.0.22621
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM)2 Duo CPU T5870 @ 2.00GHz (2 x 1995)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: disabled_off opengl: enabled_on rasterization: unavailable_off raw_draw: disabled_off_ok video_decode: unavailable_off video_encode: unavailable_off vulkan: disabled_off webgl: enabled webgl2: unavailable_off webgpu: enabled
Load (avg)	undefined
Memory (System)	1.93GB (0.27GB free)
Process Argv	--disable-extensions --crash-reporter-id 1c4fcefb-ace5-4e79-bc88-877db98ea822
Screen Reader	no
VM	0%

Extensions disabled

A/B Experiments

vsliv368cf:30146710
vsreu685:30147344
python383cf:30185419
vspor879:30202332
vspor708:30202333
vspor363:30204092
vswsl492cf:30256860
vslsvsres303:30308271
vserr242cf:30382550
pythontb:30283811
vsjup518:30340749
pythonptprofiler:30281270
vsdfh931:30280409
vshan820:30294714
vstes263:30335439
vscod805cf:30301675
binariesv615:30325510
bridge0708:30335490
bridge0723:30353136
vsaa593:30376534
pythonvs932:30410667
vsclangdf:30486550
c4g48928:30535728
dsvsc012:30540252
pynewext54:30695312
azure-dev_surveyone:30548225
vscccc:30803845
2e4cg342:30602488
89544117:30613380
a9j8j154:30646983
showlangstatbar:30737416
962ge761:30835153
03d35959:30757346
pythonfmttext:30731395
fixshowwlkth:30771522
showindicator:30805244
pythongtdpath:30769146
i26e3531:30792625
pythonnosmt12:30797651
pythonidxptcf:30805731
pythonnoceb:30805159
dsvsc013:30795093
dsvsc014:30804076
diffeditorv2:30821572
dsvsc015cf:30829746

[fluentmoheshwar]

Related issue on starship/starship#5439

[fluentmoheshwar]

I would like to note that Integrated Terminal of Visual Studio Code for Linux works fine.

[manuth]

I was searching for this issue for evenings now - bruh.
As mentioned here, this issue occurs on Windows but not on linux.

It might also be worth mentioning that this issue only occurs for characters which have a code point above U+FFFF (i.e. any nerd font glyph which has an ID with more than 4 hexadecimal characters).

Meaning:

The folder icon nf-md-folder with the code point f024b will cause this issue, while the (I believe) similar looking icon nf-fa-folder with code point f07b (take note that it only has 4 characters) won't:

[pfmoore]

I'm seeing this as well, with Oh-My-Posh. It looks like the integrated terminal is miscalculating the width of a character string like "\udb84\udfab" as 2, rather than 1 (it's the UTF-16 representation of a high bit character).

[fluentmoheshwar]

I'm seeing this as well, with Oh-My-Posh. It looks like the integrated terminal is miscalculating the width of a character string like "\udb84\udfab" as 2, rather than 1 (it's the UTF-16 representation of a high bit character).

So it's indeed a bug for Visual Studio Code not starship or oh-my-posh

[Tyriar]

This issue seems to originate from an upstream component and is not something VSCode can fix by making a change to our code. As such, I will go ahead and close it. Please try to reproduce in Windows Terminal and report to microsoft/terminal with repro steps.

If you cannot reproduce in Windows Terminal, chances are it's fixed in a later version of Windows. You can read more about how we consume conpty here. Thanks for understanding.

/label upstream terminal-conpty windows

Also we plan on shipping conpty v2 in product soon so these types of problems should go away soon! #224488

[manuth]

Hi @Tyriar
I tested quite a few versions of Windows Terminal and the error seems to occur on Windows in any Windows Terminal version below 1.20:

starship/starship#5439 (comment)

Is this information of any help?