MacDownApp/macdown

Crashes on <pre> tag

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#996 opened on Jul 6, 2018

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 (5 comments) (0 reactions) (0 assignees)Objective-C (7,686 stars) (930 forks)batch import
help wanted

Description

Take this line for instance > Hello world Now try editing it to > Hello <pre>world</pre>

MacDown crashes the moment I type > after <pre

Contributor guide

Tech stack
objective c
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.
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
Objective CXcodedebugging skills
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
The crash occurs when typing `>` after `<pre` in a blockquote. Investigate MacDown's markdown parser (likely in MParser class). Check for how HTML tags are handled inside blockquotes. Look for any unhandled edge case that causes memory corruption or nil pointer dereference. Consider adding a test case covering this scenario.