Lines plugin

A toolbox of whole-line operations — duplicate, move, sort, deduplicate, split, join and clean up lines, following Notepad++ conventions. Each command records a single undo step.

Scope: what each command acts on

• Caret-line operations (duplicate, move, insert blank) act on the selected line span, or just the caret's line when nothing is selected.
• Range transforms (sort, deduplicate, reverse, randomise, remove empty/blank, split) act on the selected lines, or the whole document when nothing is selected.
• Join Lines needs a multi-line selection and joins those lines with a single space.

Each line keeps its original end-of-line sequence (\n, \r\n, \r), so mixed or non-native line endings survive the operation.

Where to find it — Edit ▸ Lines

Editing & movement

Command	What it does
Duplicate Current Line	Copies the line span below itself.
Move Up / Move Down Current Line	Shifts the line span one row up or down.
Insert Blank Line Above / Below Current	Adds an empty line next to the caret line.
Split Lines	Hard-wraps lines longer than 80 columns, breaking at the last space before the limit (or hard at 80).
Join Lines	Merges the selected lines into one, space-separated.

Removing lines

Command	What it does
Remove Duplicate Lines	Drops every later duplicate, keeping first occurrences.
Remove Consecutive Duplicate Lines	Collapses only adjacent duplicates.
Remove Empty Lines	Removes lines with no characters.
Remove Empty Lines (Containing Blank characters)	Also removes lines that hold only whitespace.

Reordering

Command	What it does
Reverse Line Order	Flips the order of the lines.
Randomize Line Order	Shuffles the lines.

Sorting

Sort comes in seven keys, each available Ascending and Descending (14 commands). Sorting is stable — equal lines keep their relative order.

Sort key	Orders by
Lexicographically	Raw byte value.
Lex. … Ignoring Case	Byte value, ASCII case-insensitive.
In Locale Order	Language-aware collation (accents, locale rules).
As Integers	The leading whole number on each line; non-numeric lines sort first.
As Decimals (Dot)	The leading number, using . as the decimal separator.
As Decimals (Comma)	The leading number, using , as the decimal separator.
By Length	Line length in bytes.

Trailing newline is preserved

Reordering keeps the document's overall trailing-newline shape: a file that ended without a final newline still does after a sort, reverse or shuffle.