MacDownApp / MacDownApp/macdown

Not up-to-dated PDF/HTML are exported if the preview is hidden

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Rich Text Format
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Description

It seems there used to be a problem with copying HTML, so there is an useful comment in [MPDocument.m](https://github.com/MacDownApp/macdown/blob/master/MacDown/Code/Document/MPDocument.m#L1234-L1242).

```objc
// If the preview is hidden, the HTML are not updating on text change.
// Perform one extra rendering so that the HTML is up to date, and do the
// copy in the rendering callback.
if (!self.needsHtml)
{
self.copying = YES;
[self.renderer parseAndRenderNow];
return;
}
```

I think similar process should be executed before exporting HTML/PDF. I'm trying to fix this myself but not yet succeeded.

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First steps

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Research direction

Start in MacDown/Code/Document/MPDocument.m at the linked rendering comment, then trace the HTML/PDF export entry points. Compare their behavior when the preview is hidden; done means both exports use the current document content without requiring the preview to be visible.

Written by the indexing model from the issue text.

Assessment

Tech stack
macos, objective-c
Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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