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docs: Explain what elided revisions are

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A common question is asking how to show elided revisions. This FAQ
explains why revisions are elided and how to display them.
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Stephen Jennings 2025-01-10 14:43:17 -08:00
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@ -33,6 +33,42 @@ revision visible again.
See [revsets] and [templates] for further guidance. See [revsets] and [templates] for further guidance.
### What are elided revisions in the output of `jj log`? How can I display them?
"Elided revisions" appears in the log when one revision descends from another,
both are in the revset, but the revisions connecting them are _not_ in the
revset.
For example, suppose you log the revset `tyl|mus` which contains exactly two
revisions:
```sh
$ jj log -r 'tyl|mus'
○ musnqzvt me@example.com 1 minute ago 9a09f8a5
│ Revision C
~ (elided revisions)
○ tylynnzk me@example.com 1 minute ago f26967c8
│ Revision A
```
Only the two revisions in the revset are displayed. The text "(elided
revisions)" is shown to indicate that `musnqzvt` descends from `tylynnzk`, but
the nodes connecting them are not in the revset.
To view the elided revisions, change the [revset expression](revsets.md) so it
includes the connecting revisions. The `connected()` revset function does
exactly this:
```sh
$ jj log -r 'connected(tyl|mus)'
○ musnqzvt me@example.com 43 seconds ago 9a09f8a5
│ Revision C
○ rsvnrznr me@example.com 43 seconds ago 5b490f30
│ Revision B
○ tylynnzk me@example.com 43 seconds ago f26967c8
│ Revision A
```
### How can I get `jj log` to show me what `git log` would show me? ### How can I get `jj log` to show me what `git log` would show me?
Use `jj log -r ..`. The `..` [operator] lists all visible commits in the repo, excluding the root (which is never interesting and is shared by all repos). Use `jj log -r ..`. The `..` [operator] lists all visible commits in the repo, excluding the root (which is never interesting and is shared by all repos).