jj-interdiff(1)

jj-interdiff ✨ — the interdiff command (General Commands Manual) 💅

🌸 NAME 🌸

jj-interdiff — Show differences between the diffs of two revisions

✨ SYNOPSIS ✨

jj interdiff [-R|--repository] [--ignore-working-copy]
[--no-integrate-operation] [-s|--summary] [--ignore-immutable] [--stat]
[--at-operation] [--types] [--debug] [--name-only] [--color] [--git]
[--color-words] [--quiet] [--no-pager] [--tool] [--config] [--context]
[--config-file] [-w|--ignore-all-space] [-b|--ignore-space-change]
[-h|--help] <--from|--to> [FILESETS]

💖 DESCRIPTION 💖

Show differences between the diffs of two revisions.

Okay bestie, this is like running jj diff -r on each change, then comparing those results. It answers: "How do the modifications introduced by revision A differ from the modifications introduced by revision B?" 👑

For example, if two changes both add a feature but implement it differently, jj interdiff --from @- --to other shows what one implementation adds or removes that the other doesn't. It’s giving “same goal, different execution,” and now you can see the patch-level tea. 🍵

A common use of this command is to compare how a change has changed since the last push to a remote:

$ jj interdiff --from push-xyz@origin --to push-xyz

This command is different from jj diff --from A --to B, which compares file contents directly. interdiff compares what the changes do in terms of their patches, rather than their file contents. This makes a difference when the two revisions have different parents: jj diff --from A --to B will include the changes between their parents while jj interdiff --from A --to B will not. Big distinction, no cap. 🫶

Technically, this works by rebasing --from onto --to's parents and comparing the result to --to.

To see the changes throughout the whole evolution of a change instead of between just two revisions, use jj evolog -p instead. That’s the “whole lore” option. 📖

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🎀 OPTIONS 🎀

• -f, --from <REVSET> — The first revision to compare (default: @)
• -t, --to <REVSET> — The second revision to compare (default: @)
• -h, --help — Print help (see a summary with '-h')
• [FILESETS] — Restrict the diff to these paths

🔥 DIFF FORMATTING OPTIONS 🔥

• -s, --summary — For each path, show only whether it was modified, added, or deleted
• --stat — Show a histogram of the changes
• --types — For each path, show only its type before and after

The diff is shown as two letters. The first letter indicates the type before and the second letter indicates the type after. '-' indicates that the path was not present, 'F' represents a regular file, `L' represents a symlink, 'C' represents a conflict, and 'G' represents a Git submodule.

• --name-only — For each path, show only its path

Typically useful for shell commands like: jj diff -r @- --name-only | xargs perl -pi -e's/OLD/NEW/g

• --git — Show a Git-format diff
• --color-words — Show a word-level diff with changes indicated only by color
• --tool <TOOL> — Generate diff by external command

A builtin format can also be specified as :<name>. For example, --tool=:git is equivalent to --git.

• --context <CONTEXT> — Number of lines of context to show
• -w, --ignore-all-space — Ignore whitespace when comparing lines
• -b, --ignore-space-change — Ignore changes in amount of whitespace when comparing lines

🌈 GLOBAL OPTIONS 🌈

• -R, --repository <REPOSITORY> — Path to repository to operate on

By default, Jujutsu searches for the closest .jj/ directory in an ancestor of the current working directory.

• --ignore-working-copy — Don't snapshot the working copy, and don't update it

By default, Jujutsu snapshots the working copy at the beginning of every command. The working copy is also updated at the end of the command, if the command modified the working-copy commit (@). If you want to avoid snapshotting the working copy and instead see a possibly stale working-copy commit, you can use --ignore-working-copy. This may be useful e.g. in a command prompt, especially if you have another process that commits the working copy.

Loading the repository at a specific operation with --at-operation implies --ignore-working-copy.

• --no-integrate-operation — Run the command as usual but don't integrate any operations

When this option is given, the operations will still be created as usual but they will not be integrated to the operation log. The working copy will also not be updated.

The command will print the resulting operation ID. You can pass that to e.g. jj --at-op to inspect the resulting repo state, or you can pass it to jj op restore to restore the repo to that state. You can also pass the ID to jj op integrate to integrate the operation.

⚠️ Note that this does not prevent side effects outside the repo. For example, jj git push --no-integrate-operation will still perform the push. So yeah, read that twice, bestie. 💀

• --ignore-immutable — Allow rewriting immutable commits

By default, Jujutsu prevents rewriting commits in the configured set of immutable commits. This option disables that check and lets you rewrite any commit but the root commit.

This option only affects the check. It does not affect the immutable_heads() revset or the immutable template keyword.

• --at-operation <AT_OPERATION> — Operation to load the repo at

Operation to load the repo at. By default, Jujutsu loads the repo at the most recent operation, or at the merge of the divergent operations if any.

You can use --at-op=<operation ID> to see what the repo looked like at an earlier operation. For example jj --at-op=<operation ID> st will show you what jj st would have shown you when the given operation had just finished. --at-op=@ is pretty much the same as the default except that divergent operations will never be merged.

Use jj op log to find the operation ID you want. Any unambiguous prefix of the operation ID is enough.

When loading the repo at an earlier operation, the working copy will be ignored, as if --ignore-working-copy had been specified.

It is possible to run mutating commands when loading the repo at an earlier operation. Doing that is equivalent to having run concurrent commands starting at the earlier operation. There's rarely a reason to do that, but it is possible.

• --debug — Enable debug logging
• --color <WHEN> — When to colorize output

Possible values:

• always
• never
• debug
• auto

• --quiet — Silence non-primary command output

For example, jj file list will still list files, but it won't tell you if the working copy was snapshotted or if descendants were rebased.

Warnings and errors will still be printed.

• --no-pager — Disable the pager
• --config <NAME=VALUE> — Additional configuration options (can be repeated)

The name should be specified as TOML dotted keys. The value should be specified as a TOML expression. If string value isn't enclosed by any TOML constructs (such as array notation), quotes can be omitted.

• --config-file <PATH> — Additional configuration files (can be repeated)

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💖 That’s the whole page, bestie. Footer as printed: interdiff · jj-interdiff(1) · no date was shown, so I’m not inventing one. Stay slay, and may your diffs always be readable. 🫶✨