On Thu, Oct 08, 2009 at 11:25:19AM +0200, Sebastian Guttenberg wrote: > Hi all > I have observed the following undo-bug in lyx-1.6.4 and lyx2.0svn. > I consider it to be serious, as it can completely spoil a file with many > mathematical formulas if you make many undos without thinking (which in > fact happened to me): > > * Open new file > * go to math-mode with <alt>-m-m > * write a symbol with one upper and one lower index by typing: > M^a<space>_b<space> > * then navigate with the cursor back to the beginning of the upper > index, delete it with <del> and type <space> so that the upper > index-structure will be removed. > * Now try to undo with <Ctrl-Z> and get back your original expression > M^a_b . It does not work!
This is now bug #6264 (http://www.lyx.org/trac/ticket/6264) and has been fixed in trunk. Thanks for the report. -- Enrico
