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30 lines
2.1 KiB
Plaintext
30 lines
2.1 KiB
Plaintext
---
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title: "Desktop App custom dictionaries"
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---
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import useBaseUrl from '@docusaurus/useBaseUrl';
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<PlanAvailability slug="all-commercial" />
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From Mattermost desktop app v4.7.1, custom dictionary definitions can be served through a URL on Windows and Linux. If custom dictionaries aren't specified, default dictionary definitions are obtained automatically from Chromium's CDNs (content delivery networks). On macOS, the Mattermost desktop app uses dictionary definitions provided by Apple that can't be customized.
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## Prepare custom dictionaries
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On Windows and Linux, the Mattermost desktop app uses [Hunspell Dictionary definitions](https://hunspell.github.io/) by default. You can download a copy of these dictionary definitions and modify them to fit specific needs.
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To access a copy of these dictionary definitions:
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1. Download a copy of `hunspell_dictionaries.zip` from the [latest electron release](https://github.com/electron/electron/releases/latest).
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2. Extract the dictionary definitions from the ZIP file.
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3. Convert the filenames to lowercase. (Chromium expects `en-us` rather than `en-US`). Once renamed, these definition files match the usage of using Chromium's CDN ones, and you can modify the definitions as needed.
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4. Serve the extracted and converted files from a web server, and note the URL to the root folder of the dictionaries. Specify this URL as the **alternate dictionary URL** in the desktop app.
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## Configure the Desktop App
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1. In the Mattermost Desktop App, go to Settings by selecting <img src={useBaseUrl('/img/ui/dots-vertical_F01D9.svg')} alt="Use the More icon in the top left corner to access Mattermost desktop apps customization settings." className="theme-icon" /> **\> File \> Settings**.
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2. Under **App Options**, ensure that the **Check spelling** option is enabled.
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3. Select **Use an alternative dictionary URL** to specify the URL to the root folder of your custom dictionaries, then select **Save**.
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## Remove custom dictionaries
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Select **Revert to default** to stop using the specified dictionary definitions, and revert to default dictionary definitions.
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