Am 08.02.2011 um 08:02 schrieb Stephan Witt: > Am 07.02.2011 um 21:15 schrieb LyX Ticket Tracker: > >> #7209: assertion when clicking on unfinished command in math >> Ticket URL: <http://www.lyx.org/trac/ticket/7209#comment:5> >> -----------------------+---------------------------------------------------- >> Reporter: uwestoehr | Owner: poenitz >> Type: defect | Status: reopened >> Priority: high | Milestone: 1.6.9 >> Component: mathed | Version: 1.6.8 >> Severity: critical | Resolution: >> Keywords: | >> -----------------------+---------------------------------------------------- >> Changes (by metrics): >> >> * status: closed => reopened >> * resolution: fixed => >> >> >> Comment: >> >> I can still reproduce this (or a related bug) in beta 4. Create a >> displayed math inset, type \var, wait for the autocompletion to appear, >> then _right_ click on the backslash. > > Indeed this is a related bug. The menu expansion crashes now in > MenuDefinition::expandSpellingSuggestions(). > > I tried to add an early return there if we are in math mode. If I do so I can > see the real cause for the problem: the right button opens the wrong menu. It > should be the math context menu and in fact it is the normal text menu. But > only the first time - if the crash is avoided every following right click > opens the math menu. So, there is something wrong with the menu binding. I > don't know enough about that machinery... but the early return patch only > hides the root cause I think.
It turns out the problem is the missing metrics info somehow. BufferView::contextMenu() tries to choose the correct context menu for cursor position. This ends up in TextMetrics::checkInsetHit() ... ... there the math inset isn't found because probably it's metrics are not correct. So, finally the "covering_inset" in BufferView::contextMenu() is 0 and the default context menu "context-edit" is the result. Unfortunately it's not a good idea to try this on a math inset. To fix it we have to correct the metrics computation time. Is this a known issue? I'd guess that's not an easy business. Stephan
