termux/termux-app

Weird rendering when using specific shell theme and then recalling command history with long commands

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#1,860 创建于 2020年12月26日

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 (6 评论) (0 反应) (0 负责人)Java (54,915 star) (6,572 fork)batch import
help wanted

描述

Problem description

When recalling command history, if encountered long commands, the rendering behaves weird.

Shell: fish 3.1.2 Using oh-my-fish with bobthefish theme

Ascinema recording that contains the problematic sequences Screen recording of asciinema replaying the above cast in Termux

Steps to reproduce

  1. pkg install fish
  2. Install oh-my-fish.
  3. Use omf theme bobthefish to switch theme.
  4. Type a long enough command that exceeds the maximum width and wraps.
  5. Press up to recall and observe weird behaviors, for example, characters disappearing, or the whole line moving backwards for one character.

Expected behavior

Termux should render just like how the above asciinema recording renders on the website.

Additional information

  • Termux application version: 0.103
  • Android OS version: 10 (LineageOS 17.1)
  • Device model: Sony Xperia XZ1

贡献者指南

技术栈
javaandroid
领域
mobilecli
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-2 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
JavaAndroid developmentTerminal emulation concepts
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
30
研究方向
Investigate the rendering logic in the Termux terminal emulator, particularly how command history is displayed when commands wrap. Look at files such as TerminalView.java or EmulatorView.java for text rendering. Reproduce the issue with fish shell and bobthefish theme as described in the issue. Check if the issue is related to prompt rendering or line wrapping. Consider testing with different terminal widths and long commands.