How do I enable undo in eclipse ant editor?

Undo is not working for me in ant editor in eclipse. When I press Ctrl-Z nothing happens.

Is it possible to enable undo somehow or is this a bug?

I am using Eclipse 3.4.2 (Ganymede) on Windows XP Professional.

Yes undo should be working perfectly in an ant editor.
For Ctrl-Z to not workcould mean:

• the shortcut has been assigned to another action (Windows > Preferences > General > Keys)
• the undo buffer size is somehow at '0' (Windows > Preferences > General > Editors > Text Editor)
• a plugin somehow 'steals' the key event for itself

Try a fresh install, and check also with a latest Galileo (3.5RC2) install to see if the problem persist.

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Note: zvikico mentions the existence of a known bug with ant editor in 3.4.2

After a quick search, the following bugs might explain your situation:

• 267780 [ant editor] delete line cannot be undone after cursor has been moved
• 247434 Failed to undo removal of line in Ant editor, only with 'Eclipse IDE for Java Developers', with Eclipse Classic you don't get this behavior

and finally:

• 239115 Undo functionality does not work anymore in the ant editor, mainly because a WTP issue, only solved in 3.5