The wiki asserts (see below) that Fossil can cope with any prefix length. If so can we have a feature in the configuration pages to set the prefix length for use across fossil. The standard 10 chars is still quite large and on smaller projects the risk of a UUID clash is small using only 4 or 5 chars. It would be easier on the eye when viewing, for example, timeline pages.

Thanks

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As stated in the wiki

A version in fossil is 40 character hexadecimal string. fossil will be able to figure out which version you want with any prefix of that string that is distinct from all others. Commands which require a version are looking for that string, the unique prefix, or a tag.