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appcast.md: update for new checkpoint command (#29312)

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Vítor Galvão 2017-01-23 16:53:30 +00:00 committed by Markus Reiter
parent cb84b014b0
commit 6a21c00034
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doc/cask_language_reference/stanzas/appcast.md
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@ -6,7 +6,7 @@ The value of the `appcast` stanza is a string, holding the URL for an appcast wh
| key | value |
| ------------- | ----------- |
| `checkpoint:` | a string holding a custom checksum of the most recent appcast which matches the current Cask versioning. Use `curl --compressed --location --user-agent 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36' "{{appcast_url}}" | /usr/bin/sed 's|<pubDate>[^<]*</pubDate>||g' | shasum --algorithm 256` to calculate it.
| `checkpoint:` | a string holding a custom checksum of the most recent appcast which matches the current Cask versioning. Use `brew cask _appcast_checkpoint --calculate "{{appcast_url}}"` to calculate it.
Example: [`atom.rb`](https://github.com/caskroom/homebrew-cask/blob/4d5a2dd2376f42c726148cfccaefe839f21e42ab/Casks/atom.rb#L7L8)