slab/quill

Wrong cursor behavior after changing format and pressing arrow key

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#1395 opened on Apr 8, 2017

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 (3 comments) (3 reactions) (0 assignees)TypeScript (47,108 stars) (3,637 forks)batch import
bug:functionalitygood first issue

Description

Wrong cursor behavior after changing format and pressing right/left arrow key.

Steps for Reproduction

  1. Visit https://quilljs.com/playground/
  2. Write some text
  3. Put cursor in the middle of text
  4. Change format, e.g. turn bold on
  5. Press right arrow key - cursor jumps to the end of text or
  6. Press left arrow key - nothing happens (second pressing works)

Expected behavior: After pressing right arrow key, cursor should move one character right. After pressing left arrow key, cursor should move one character left.

Actual behavior: After pressing right arrow key cursor jumps to the end of text. After first pressing left arrow key nothing happens.

Platforms:

Win10, Firefox 52.0.2 (64 bity) Chrome 57.0.2987.133 (64-bit)

Contributor guide

Tech stack
typescriptjavascript
Domain
frontend
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.
half day
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
Familiarity with QuillUnderstanding of DOM eventsJavaScript debugging
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Investigate the cursor movement logic in Quill's selection module, likely in 'quill/core/selection.ts'. Look for how format changes affect the selection range. Check if any recent changes or related issues exist. Reproduce the bug and trace the keyboard event handling to identify the cause.