jj-improve-history

name	jj-improve-history
description	Improve jj (Jujutsu) commit messages while preserving original authorship. Use only when the user explicitly asks — git is the default workflow. Trigger on "improve jj history", "rewrite jj messages", "/jj-improve-history". Optional argument: base revision to compare against (default: main).
version	0.1.0
allowed-tools	Bash(jj:*), Read, Edit

jj improve history

Arguments

• base-revision (optional): Base revision to compare against (default: main). Referred to as <base> below.

Context

Gather context first:

• Current revision: jj log -r @ --no-graph --template 'change_id.short() ++ " " ++ description.first_line()'
• Working copy clean or not: jj diff --stat

Task

Review and improve commit messages in range <base>..@-.

List commits with their current messages:

jj log -r "<base>..@-" --template '
change_id.short() ++ " by " ++ author.name() ++ "\n" ++
"  " ++ description.first_line() ++ "\n"
'

For each commit needing improvement, read its diff to understand the change, then:

jj describe <change_id> -m "type: improved message"

jj describe preserves original authorship automatically.

Use conventional commits format: feat | fix | change | remove | refactor | docs | test | chore Focus on capturing WHY the change was made, not just what changed.