vercel/hyper

Clear (⌘K) loses content shorter than the displayed rows

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#665 opened on Aug 27, 2016

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 (0 comments) (5 reactions) (0 assignees)TypeScript (44,582 stars) (3,558 forks)batch import
help wanted🐛 Type: Bug

Description

When using 'clear' (⌘K) with content that is longer than the maximum displayed rows, it is possible to reach the cleared content by scrolling up. When clearing content that is shorter than this amount of rows however, the content is seemingly lost and not available when scrolling. In Terminal.app, cleared content appears to be available regardless of the amount of rows being cleared.

Contributor guide

Tech stack
typescriptreactelectronnodejs
Domain
desktop
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
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.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Understanding of terminal emulationBasic knowledge of TypeScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate the implementation of the clear command in Hyper's terminal emulator. Look at how scrollback data is handled when clearing the buffer. Compare with Terminal.app behavior. Check relevant files in the terminal package, such as the clear action handler and the scrollback buffer management. Consider whether the issue is in the xterm.js library or Hyper's custom code.