Line Editor Undo

DEPRECATED: Line Editor Undo is no longer updated. Use Line Manager Plus instead: it has the same Undo and Redo buttons, plus target line info for Send to Line.

Clicked or deleted a stop by accident and can't remember which one? Line Editor Undo adds Undo and Redo buttons to the line manager, so you can step back through your edits of a line's stops, put them all back the way they were when you opened the line, and redo what you undid.

Features

• Undo button (a curved-arrow icon) left of the Auto-Rename button of a single selected line: each click undoes one edit (adding, removing or moving a stop, a waypoint, a terminal, load mode, waiting times or cargo settings), most recent first.
• Revert all: Shift+click Undo puts every stop back the way it was when you opened the line.
• Redo button right of Undo: re-applies the edits you undid, one per click, also after a revert all. Making a new edit clears what can be redone.
• Tooltips name the edit the next click undoes or redoes and how many changes you made since opening the line. Up to 50 steps are kept; Shift+click always reaches the start.
• Each button stays greyed out while there is nothing to undo or redo.

How to use

• Open the line manager and select one line. The button row reads Undo, Redo, Auto-Rename, colour, Buy Vehicles.
• Click Undo to take back your last stop edit. Click again to go further back.
• Shift+click Undo to revert all changes since you opened the line.
• Click Redo to bring back an edit you undid.
• The history starts each time you open a line, and is cleared when you switch to another line or close the line manager.

Notes

• Line Manager Plus includes these buttons, so use one or the other. The two are marked incompatible; if both are enabled anyway, Line Editor Undo stays off and Line Manager Plus provides the buttons (unless its undo setting is Off).
• GUI only: the undo and redo history lives in memory and is never saved. Safe to add to or remove from existing saves.
• Only stops and the line's stop settings are reverted. Name, colour and vehicles are left alone.
• If a station from the state you go back to has been demolished, nothing is changed and a message explains why.

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Changelog

Revision 5 (2026-10-10)

• Line Manager Plus now includes this mod. The two are marked incompatible, and if both are enabled anyway, Line Editor Undo stays off so only one set of buttons appears.
• Fixed: opening the line manager again no longer writes a stack trace to the game's log (stdout.txt). The buttons read the closed window's line once before switching to the new window.

Revision 4 (2026-10-10)

• Fixed: fewer stylesheet rules (12 → 5), so large mod sets no longer hit the game's load crash (the game crashes on load when mods add too many style rules).

Revision 3 (2026-10-10)

• New: translations into Russian, German, French, Spanish, Italian, Dutch, Polish, Portuguese (Brazil), Japanese, Korean and Chinese (Simplified and Traditional). The mod follows the game's language setting.
• Fixed: the message about a single missing station now reads "1 station ... no longer exists".

Revision 2 (2026-10-08)

• Performance: while a line is open in the line manager, the buttons now check the line once per frame instead of twice, without copying it, and the tooltip texts are only worked out again after an edit.

Revision 1 (2026-10-08)

• First release.