jj log -r <revset> [-p]               # View history (--patch/-p: include diffs, --count: just count)
jj log -r <revset> -G                 # -G is short for --no-graph
jj show -r <rev>                      # Show revision details (description + diff)
jj evolog -r <rev> [-p]               # View a revision's evolution
jj new [-A] <base>                    # Create revision and edit it (-A: insert between <base> and its children rather than just on top of base)
jj new --no-edit <base>               # Create without switching
jj edit <rev>                         # Switch to editing revision
jj desc -r <rev> -m "text"            # Set description
jj metaedit -r <rev> -m "text"        # Modify metadata (author, timestamps, description)

jj diff                               # Changes in @
jj diff -r <revset>                   # Changes in revset (need to be contiguous)
jj diff -f <rev1> -t <rev2>           # Differences between two states
jj file show -r <rev> <fileset>       # Show file contents at revision (without switching)
jj file show -r <rev> **/*.md -T '"=== " ++ path ++ " ===\n"'  # Multiple files with path headers
jj restore <fileset>                    # Discard changes to files
jj restore --from <commit-id> <fileset> # Restore from another revision/commit

jj split -r <rev> <paths> -m "text"   # Split into two revisions
jj absorb                             # Auto-squash changes into ancestor commits

jj rebase -s <src> -o <dest>          # Rebase with descendants onto <dest>
jj rebase -r <rev> -o <dest>          # Rebase single revision onto <dest>
# NOTE: -d/--destination is deprecated, use -o/--onto instead

jj file annotate <path>               # Blame: who changed each line
jj bisect run -- <cmd>                # Binary search for bug-introducing commit

jj undo                               # Undo last operation (progressive - repeat to go further back)
jj redo                               # Redo undone operation
jj sign -r <rev>                      # Cryptographically sign commit
jj unsign -r <rev>                    # Remove signature
jj revert -r <rev>                    # Create commit that reverts changes (replaces old jj backout)
jj tag set <name> -r <rev>            # Create/update local tag
jj tag delete <name>                  # Delete local tag
jj git colocation enable              # Convert to colocated repo
jj git colocation disable             # Convert to non-colocated

@, @-, @--                            # Working copy, parent(s), grandparent(s)
::@                                   # Ancestors
@::                                   # Descendants
mine()                                # Your changes
conflicted()                          # Has conflicts (renamed from conflict() in v0.33)
visible()                             # Visible revisions (built-in alias)
hidden()                              # Hidden revisions (built-in alias)
description(substring-i:"text")       # Match description (partial, case-insensitive)
subject(substring:"text")             # Match first line only
signed()                              # Cryptographically signed commits
A | B, A & B, A ~ B                   # Union, intersection, difference
change_id(prefix)                     # Explicit change ID prefix lookup
parents(x, 2)                         # Parents with depth
exactly(x, 3)                         # Assert exactly N revisions

jj log -r xyz          # ✅
jj log --revisions xyz # ❌

jj new parent -m "A"; jj new -m "B"                             # ❌ B is child of A!
jj new --no-edit parent -m "A"; jj new --no-edit parent -m "B"  # ✅ Both children of parent

jj log -r 'description(substring:"[todo]")'    # ✅

jj rebase -s xyz -o main   # ✅ New syntax
jj rebase -s xyz -d main   # ⚠️ Deprecated (still works but warns)

jj log -r abc              # ❌ Error if 'abc' matches multiple change IDs
jj log -r 'change_id(abc)' # ✅ Explicitly query by prefix
jj log -r 'bookmarks(abc)' # ✅ For bookmark name patterns

jj diff 'src/*.rs'         # Matches glob pattern by default
jj diff 'cwd:"src/*.rs"'   # Use cwd: prefix for literal path with special chars

jj op log              # Find operation before problem
jj op restore <op-id>  # Restore the WHOLE repository (history included) to that state