Commands

Type them after : (or Ctrl+K). Tab/Shift+Tab, ↑/↓ or Ctrl+N/Ctrl+P pick an entry, Enter runs it (a command that still needs its argument is completed instead), Esc or Backspace on an empty line closes. Text that is not a command searches the actions by name. A command that cannot run shows an error and the line stays open.

Editor commands (from the editor, : starts the line with '<,'> in Visual mode and with .,.+2 after a count of 3, as Vim does; the command runs in the active tab’s editor):

• A line range alone goes to its last line (the first non-blank): :12, :$, :+3, :-, :'a. Addresses are a number, ., $, 'x (a mark: 'a-'z, '<, '>, '', '.), each with +n / -n; a,b, a;b (the second counted from the first) and % (every line).
• :[range]s/pattern/replacement/[flags] (:substitute) replaces in the range’s lines (the cursor’s line without one) as one undo step; the cursor goes to the last line changed. The pattern is a Rust regular expression, as in search (an empty one is the last search’s), and becomes the last search. The replacement is Vim’s: & or \0 the match, \1-\9 a group (an absent one is empty), ~ the previous replacement, \r a line break (\n too; in Vim it is a NUL), \t a tab, \u \l the next character upper or lower case, \U \L up to \E or \e, a backslash before any other character that character (\&, \~, \\, the delimiter); $1 is plain text. Flags: g (every match in a line), i / I (ignore case, or not), e (no error when nothing matches), & first (the last flags again); c (confirm) is not supported and says so. Any delimiter that is not a letter, digit, blank, \, " or | works (:s#a/b#c#). :s alone and :& repeat the last :s without its flags, :&& with them. Nothing matched: “Pattern not found”.
• :[range]format formats the range’s lines (:'<,'>format, :%format); :format without a range, and Space e f (editor.format), format the statement under the cursor or the Visual selection. The formatter is never run on its own. It changes only the layout: where lines break, the indent ([editor] format_indent) and, if asked, the case of keywords ([editor] format_keyword_case). Names, strings, comments and dollar-quoted bodies stay as written. When its result would differ in anything else (an operator written apart, strings joined across a line break, U&'…', a psql \command) it changes nothing and says on which line. One format is one undo step.

An editor command closes the line; what went wrong is said in the status bar.

Settings of :set (saved to config.toml like the matching actions):