Version: 0.9.94 (using KDE 4.2.0) Compiler: gcc (GCC) 4.2.4 (Gentoo 4.2.4-r1 p1.1) OS: Linux Installed from: Gentoo Packages When merging files, KDiff3 offers a simple editor to make changes on the merged file. There is, however, no undo function to revert unwanted text modification steps (e.g. deletions).
Still no undo feature in KDiff3 0.9.97. I use KDE SC 4.12.3 on Fedora 20.
*** This bug has been confirmed by popular vote. ***