microsoft/Terminal

"less" pager renders in the wrong color when started at the bottom of the screen from powershell

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#3,218 opened on Oct 16, 2019

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Area-OutputArea-RenderingHelp WantedIssue-BugPriority-3Product-Conpty

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Description

Environment

Windows build number: 10.0.18362.356
Windows Terminal version (if applicable): 0.5.2762.0

Any other software? less pager (https://chocolatey.org/packages/Less)

Steps to reproduce

Open PowerShell Tab less <somefile> will show the file in foreground color gci less <somefile> will show the file in black color

Expected behavior

<somefile> should be shown in foreground color

Actual behavior

Somehow, after "gci" the file is shown in black. This does not happen with Cmd (note: at least when I tried to reproduce it, but I believe it had happened previously with cmd as well) and it doesn't happen in PowerShell or Cmd standalone (same note applies).

Contributor guide

Research direction
Investigate why the less pager renders in black after running gci in PowerShell. Trace the sequence of VT commands sent by less and how Windows Terminal processes them when the screen is scrolled.
Tech stack
cpp
Domain
cli
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70