LyX developers: I've noticed several instabilities concerning the math editor and subscripts/superscripts. In the following, I give the "recipe" for one crash and one odd behaviour of LyX 1.3.5 (also happens in 1.3.4):
CRASH: * Math-display. * type "ab", for example. * LEFT CURSOR, so that cursor is between "a" and "b" * _ to create the subscript -- also "works" with a superscript ;-) * RIGHT CURSOR, to exit the "subscript red box" (what is the correct name for that?), leaving the subscript empty * LEFT CURSOR again, to re-enter the "subscript red box" * DOWN CURSOR (UP CURSOR in the case of superscript) ----> crash Now an odd behaviour: * Math-display. * type "a" * _ to create the subscript * RIGHT CURSOR, exit the subscript. * DOWN CURSOR, to re-enter the subscript, the cursor goes to the right place, you can type there and the cursor moves correspondingly, but nothing appears. If you save the file, you see the subscript is just absent. This "ghost subscript" survives as much as you don't leave the display and can be edited "normally", even if it is not displayed, but it is not saved in the .lyx file. Seems mathed is getting a little confused when you create a subscript/superscript but leave it empty, so that strange things can happen when you re-enter it. Looking at the old messages in the list and in the bugzilla, I found that *maybe* this behaviour has something to do with this: http://www.mail-archive.com/lyx-devel%40lists.lyx.org/msg61977.html but since I'm not a programmer, I'm just guessing. Best regards, Alysson
