QL-Win / QL-Win/QuickLook

QuickLook.Plugin.TextViewer.config totally ignored

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Dominant language
C#
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Description

Describe the bug

  • Whatever the content of UserData\QuickLook.Plugin.TextViewer.config in portable mode, no change.
  • Any change in UserData\QuickLook.config does work, though.

To Reproduce
For my test, this is the content of the config file:

<?xml version="1.0" encoding="utf-8"?>
<Settings>
  <FontFamily>Arial</FontFamily>
  <FontSize>30</FontSize>
</Settings>

Expected behavior
On a pure .txt file, I expect to see very large fonts, in Arial.
Instead, I can only see default monospace fonts, default sIze (likely 14).

Desktop (please complete the following information):

  • OS Version: Windows 11 25H2 - 26200.8893
  • QuickLook Version: 4.5.0 from .7z available on GitHub releases.

Screenshots and Exception Log

Image

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing how portable-mode settings are loaded for UserData\QuickLook.Plugin.TextViewer.config and compare that path with UserData\QuickLook.config, which is reported to work. Reproduce the issue with the supplied XML on a .txt file; done when FontFamily and FontSize changes affect the preview.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
58/100

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