Preview

Press p to toggle the preview pane. It updates automatically as you navigate — what it shows depends on what is currently selected.

Context-aware content

Context	What preview shows
Revision highlighted	Diff of that revision (jj show)
File highlighted in details	Diff of that file (jj diff)
Evolog entry highlighted	Patch diff of that entry (jj evolog -p -n 1)
Oplog entry highlighted	Operation details (jj op show)

Keys

• p: toggle preview on/off
• shift+p: move preview to bottom (toggle between side and bottom)
• ctrl+n: scroll one line down
• ctrl+p: scroll one line up
• ctrl+d: scroll half page down
• ctrl+u: scroll half page up
• ctrl+h: expand preview width
• ctrl+l: shrink preview width

When mouse support is available, you can scroll the preview and drag the separator to resize it.

Position

[preview]
position = "auto"      # auto | right | bottom
show_at_start = false
width_percentage = 50.0
width_increment_percentage = 5.0

• auto (default): uses bottom in tall terminals, right in wide terminals
• right: always on the right
• bottom: always at the bottom

Customizing preview commands

All preview commands are configurable. The placeholders $change_id, $commit_id, $operation_id, and $file are substituted at runtime.

[preview]
revision_command = ["show", "--color", "always", "-r", "$change_id"]
evolog_command   = ["evolog", "--color", "always", "-r", "$commit_id", "-p", "-n", "1"]
oplog_command    = ["op", "show", "$operation_id", "--color", "always"]
file_command     = ["diff", "--color", "always", "-r", "$change_id", "$file"]