Spaces added to prompt on shell launch (PowerShell/pwsh) #11510

@DHowett commented on GitHub (Nov 20, 2020):

Just so long as it's the first thing printed to the screen. I used the powershell core escape escape, so it won't work in Windows PowerShell (sorry)

@DHowett commented on GitHub (Nov 20, 2020): Just so long as it's the first thing printed to the screen. I used the powershell core escape escape, so it won't work in Windows PowerShell (sorry)

claunia commented

@yooakim commented on GitHub (Dec 3, 2020):

I've been off-line for a while but thanks for the looking into this :-)

@yooakim commented on GitHub (Dec 3, 2020): I've been off-line for a while but thanks for the looking into this :-)

claunia commented

@ntaken commented on GitHub (Jan 21, 2021):

hmm.. Have the same thing happening to me with Windows terminal Version: 1.4.3243.0 but with Ubuntu wsl after following this guide [https://docs.microsoft.com/sv-se/windows/terminal/tutorials/powerline-setup] .
Works fine with wsl.exe.

Resizing the window or open any file and close it will fix the stripes.

@ntaken commented on GitHub (Jan 21, 2021): hmm.. Have the same thing happening to me with Windows terminal Version: 1.4.3243.0 but with Ubuntu wsl after following this guide [https://docs.microsoft.com/sv-se/windows/terminal/tutorials/powerline-setup] . Works fine with wsl.exe. Resizing the window or open any file and close it will fix the stripes.

claunia commented

@brunovieira97 commented on GitHub (Sep 11, 2021):

My Windows Terminal was updated yesterday and this started happening for me. Even though I always use up to date versions of everything (or did so until 2 months ago), this never happened before.

Any update on this?

@brunovieira97 commented on GitHub (Sep 11, 2021): My Windows Terminal was updated yesterday and this started happening for me. Even though I always use up to date versions of everything (or did so until 2 months ago), this never happened before. Any update on this?

claunia commented

@ghost commented on GitHub (Sep 12, 2021):

I can confirm that this happens with the -NoLogo option, and only on the first prompt:

As a workaround, I've added a cls to my PS profile, which had no impact on launch time:

Import-Module posh-git
Import-Module oh-my-posh
Set-PoshPrompt Paradox
Clear-Host

@ghost commented on GitHub (Sep 12, 2021): I can confirm that this happens with the `-NoLogo` option, and only on the first prompt: ![image](https://user-images.githubusercontent.com/63101447/132992092-7bba28df-d230-46fd-95dc-01b27e278cba.png) As a workaround, I've added a `cls` to my PS profile, which had no impact on launch time: ```powershell Import-Module posh-git Import-Module oh-my-posh Set-PoshPrompt Paradox Clear-Host ```

claunia commented

@DHowett commented on GitHub (Sep 13, 2021):

How strange! Would you be willing to try and capture this with the debug tap?

@DHowett commented on GitHub (Sep 13, 2021): How strange! Would you be willing to try and capture this with the [debug tap](https://github.com/microsoft/terminal/wiki/Enabling-the-debug-tap)?

claunia commented

@DHowett commented on GitHub (Sep 13, 2021):

Wait, I forgot that we already had a repro for this. You can ignore that request!

@DHowett commented on GitHub (Sep 13, 2021): Wait, I forgot that we already had a repro for this. You can ignore that request!

claunia commented

2026-01-31 02:49:44 +00:00

@brunovieira97 commented on GitHub (Sep 13, 2021):

@DHowett if you need any assistance in reproducing, or more information on it, count on me! I'm interested in helping in any way I can ;)

@brunovieira97 commented on GitHub (Sep 13, 2021): @DHowett if you need any assistance in reproducing, or more information on it, count on me! I'm interested in helping in any way I can ;)

claunia commented

@wu-yue-yu commented on GitHub (Sep 16, 2021):

ah, I have the same problem. But it perfoms normally before, just becomes like this when I accidentally change the cmd profile. Then my wsl looks like this.

@wu-yue-yu commented on GitHub (Sep 16, 2021): ah, I have the same problem. But it perfoms normally before, just becomes like this when I accidentally change the cmd profile. Then my wsl looks like this.

claunia commented

2026-01-31 02:49:44 +00:00

@wu-yue-yu commented on GitHub (Sep 16, 2021):

My Windows Terminal was updated yesterday and this started happening for me. Even though I always use up to date versions of everything (or did so until 2 months ago), this never happened before.

Any update on this?

Maybe because of the update? Me too. It jumps out recently.

@wu-yue-yu commented on GitHub (Sep 16, 2021): > My Windows Terminal was updated yesterday and this started happening for me. Even though I always use up to date versions of everything (or did so until 2 months ago), this never happened before. > > Any update on this? Maybe because of the update? Me too. It jumps out recently.

claunia commented

2026-01-31 02:49:44 +00:00

@wu-yue-yu commented on GitHub (Sep 16, 2021):

It happens only start up, and has nothing to do with the logo, I think.

@wu-yue-yu commented on GitHub (Sep 16, 2021): It happens only start up, and has nothing to do with the logo, I think. ![image](https://user-images.githubusercontent.com/59756623/133552772-d5e0095a-6198-492f-ad9e-e914d2f74035.png)

claunia commented

@wu-yue-yu commented on GitHub (Sep 16, 2021):

If there's anything before prompt, it works fine, even print some space before the prompt.

@wu-yue-yu commented on GitHub (Sep 16, 2021): If there's anything before prompt, it works fine, even print some space before the prompt. ![image](https://user-images.githubusercontent.com/59756623/133553267-fd5bbda6-2c00-4c1a-a866-2302bfc90c0f.png)

claunia commented

@ayalon commented on GitHub (Sep 16, 2021):

I am also affected. I'm using Powerline Go
https://github.com/justjanne/powerline-go

@ayalon commented on GitHub (Sep 16, 2021): I am also affected. I'm using Powerline Go https://github.com/justjanne/powerline-go

claunia commented

@wu-yue-yu commented on GitHub (Sep 16, 2021):

Also, when split the window, it will look like this:

@wu-yue-yu commented on GitHub (Sep 16, 2021): Also, when split the window, it will look like this: ![image](https://user-images.githubusercontent.com/59756623/133628181-c2404aa1-752c-4ef1-a34d-891a745d4c17.png)

claunia commented

@chevcast commented on GitHub (Sep 27, 2021):

Same issue for me. I'm using powerline-shell in Ubuntu. This issue only occurs in Windows Terminal and not in any other terminal. Including Hyper terminal.

This is a fresh install of Windows Terminal and like others it only happens on first render. If I hit enter for a new prompt it renders correctly. The only setting I changed is to set the font to Fira Code which has the separator symbols in it and I set the cursor style to a solid bar. That's it. The rest is all default, though I have toggled plenty of render/appearance settings back and forth to see if anything affected it. No settings seem to affect it.

@chevcast commented on GitHub (Sep 27, 2021): Same issue for me. I'm using powerline-shell in Ubuntu. This issue only occurs in Windows Terminal and not in any other terminal. Including Hyper terminal. ![image](https://user-images.githubusercontent.com/874394/134835167-8211168d-c185-4ee3-8af4-264d33611516.png) This is a fresh install of Windows Terminal and like others it only happens on first render. If I hit enter for a new prompt it renders correctly. The only setting I changed is to set the font to `Fira Code` which has the separator symbols in it and I set the cursor style to a solid bar. That's it. The rest is all default, though I have toggled plenty of render/appearance settings back and forth to see if anything affected it. No settings seem to affect it.

claunia commented

@chevcast commented on GitHub (Sep 27, 2021):

I can confirm that this happens with the -NoLogo option, and only on the first prompt:

As a workaround, I've added a cls to my PS profile, which had no impact on launch time:
Import-Module posh-git
Import-Module oh-my-posh
Set-PoshPrompt Paradox
Clear-Host

I just did the equivalent in my .bashrc for Ubuntu by putting a clear; at the bottom and this does "fix" the issue! So thanks for that. At least there's a workaround. It's a minor issue I know but it was annoying me lol

@chevcast commented on GitHub (Sep 27, 2021): > I can confirm that this happens with the `-NoLogo` option, and only on the first prompt: > > ![image](https://user-images.githubusercontent.com/63101447/132992092-7bba28df-d230-46fd-95dc-01b27e278cba.png) > > As a workaround, I've added a `cls` to my PS profile, which had no impact on launch time: > > ```powershell > Import-Module posh-git > Import-Module oh-my-posh > Set-PoshPrompt Paradox > Clear-Host > ``` I just did the equivalent in my `.bashrc` for Ubuntu by putting a `clear;` at the bottom and this does "fix" the issue! So thanks for that. At least there's a workaround. It's a minor issue I know but it was annoying me lol

claunia commented

@singh-ramanpreet commented on GitHub (Oct 12, 2021):

The issue seems to be resolved for me after switching to "WSL from Microsoft Store".
https://devblogs.microsoft.com/commandline/a-preview-of-wsl-in-the-microsoft-store-is-now-available/

@singh-ramanpreet commented on GitHub (Oct 12, 2021): The issue seems to be resolved for me after switching to "WSL from Microsoft Store". https://devblogs.microsoft.com/commandline/a-preview-of-wsl-in-the-microsoft-store-is-now-available/

claunia commented

@chevsunrun commented on GitHub (Oct 12, 2021):

Oh wow thanks for the link. Happy to see WSL progressing into a stand-alone app!

@chevsunrun commented on GitHub (Oct 12, 2021): Oh wow thanks for the link. Happy to see WSL progressing into a stand-alone app!

claunia commented

@PilotBob commented on GitHub (Jan 7, 2022):

Just to be complete, this also happens when I open the Ubnutu / WSL2 / Bash shell in Terminal.

@PilotBob commented on GitHub (Jan 7, 2022): Just to be complete, this also happens when I open the Ubnutu / WSL2 / Bash shell in Terminal.

claunia commented

@floatingrain commented on GitHub (Jan 31, 2022):

This problem still happens in Windows Terminal 1.12.3472.0

@floatingrain commented on GitHub (Jan 31, 2022): This problem still happens in Windows Terminal 1.12.3472.0

claunia commented

27de97bf93/src/renderer/vt/paint.cpp (L448-L462)

@DHowett commented on GitHub (Feb 1, 2022):

HA! We finally have a root cause for this. I ran into a different issue, where the "version update" notification was losing the background color around the edges, and it all started to fall into place.

If we are painting the first frame or any frame after you clear the entire screen, as an optimization[^1] we don't send a bunch of space characters. We neglected to check whether those space characters were meaningful (had background colors, underlines, other attributes...). This happens for each run of text (so, region of text bordered by a color/attribute change), not per line.

Proximal area of failure:

I wonder if we can use this function to help:

27de97bf93/src/buffer/out/TextAttribute.hpp (L135-L137)

[^1] The ConPTY API tries very hard to pretend that it is not translating a buffer of 120x30 cells into VT . . . so it lies, cheats and steals sometimes. The buffer contains 3900 empty spaces on startup, so we try not to send them to apps.

@DHowett commented on GitHub (Feb 1, 2022): HA! We finally have a root cause for this. I ran into a different issue, where the "version update" notification was losing the background color around the edges, and it all started to fall into place. <img width="496" alt="image" src="https://user-images.githubusercontent.com/189190/152048335-123fbc32-56ed-45a1-b066-f970f2dec9de.png"> If we are painting the first frame or any frame after you clear the entire screen, as an optimization[^1] we don't send a bunch of space characters. We neglected to check whether those space characters were _meaningful_ (had background colors, underlines, other attributes...). This happens for each run of text (so, region of text bordered by a color/attribute change), not per line. Proximal area of failure: https://github.com/microsoft/terminal/blob/27de97bf9325d02c6e5bf13e005e2c805ac963a3/src/renderer/vt/paint.cpp#L448-L462 I wonder if we can use this function to help: https://github.com/microsoft/terminal/blob/27de97bf9325d02c6e5bf13e005e2c805ac963a3/src/buffer/out/TextAttribute.hpp#L135-L137 [^1] The ConPTY API tries very hard to pretend that it is not translating a buffer of 120x30 cells into VT . . . so it lies, cheats and steals sometimes. The buffer contains 3900 empty spaces on startup, so we try not to send them to apps.

claunia commented

@DHowett commented on GitHub (Feb 17, 2022):

It's testable!
I am not certain the right way to fix it, but it's fixable too. The test passes as of c9e2069971, but the attribute math is not correct (to which I suspect @j4james will attest)

@DHowett commented on GitHub (Feb 17, 2022): <img width="278" alt="image" src="https://user-images.githubusercontent.com/189190/154380486-d4ee12af-7b9f-4c69-adf9-c8ab30728a20.png"> It's testable! I am not certain the right way to fix it, but it's fixable too. The test passes as of https://github.com/microsoft/terminal/commit/c9e206997106eeecbaa287d9f41e4ccdd6f835e1, but the attribute math is not correct (to which I suspect @j4james will attest)

claunia commented

@ghost commented on GitHub (Aug 18, 2022):

:tada:This issue was addressed in #13665, which has now been successfully released as Windows Terminal v1.14.228.🎉

Handy links:

@ghost commented on GitHub (Aug 18, 2022): :tada:This issue was addressed in #13665, which has now been successfully released as `Windows Terminal v1.14.228`.:tada: Handy links: * [Release Notes](https://github.com/microsoft/terminal/releases/tag/v1.14.228) * [Store Download](https://www.microsoft.com/store/apps/9n8g5rfz9xk3?cid=storebadge&ocid=badge)

claunia commented

@ghost commented on GitHub (Aug 18, 2022):

:tada:This issue was addressed in #13665, which has now been successfully released as Windows Terminal Preview v1.15.228.🎉

Handy links:

@ghost commented on GitHub (Aug 18, 2022): :tada:This issue was addressed in #13665, which has now been successfully released as `Windows Terminal Preview v1.15.228`.:tada: Handy links: * [Release Notes](https://github.com/microsoft/terminal/releases/tag/v1.15.228) * [Store Download](https://www.microsoft.com/store/apps/9n8g5rfz9xk3?cid=storebadge&ocid=badge)

claunia commented

@Un1q32 commented on GitHub (Dec 1, 2022):

i seem to have a similar issue

It's different on different font sizes. The above screenshot is with a font size of 12, but with a font size of 13 the gaps disappear.

@Un1q32 commented on GitHub (Dec 1, 2022): i seem to have a similar issue ![Screenshot (4) edit](https://user-images.githubusercontent.com/57970114/204942696-1762b32a-3c02-4487-9580-d3ba6ec93301.png) It's different on different font sizes. The above screenshot is with a font size of 12, but with a font size of 13 the gaps disappear.

claunia commented