Am Montag, 17. Oktober 2016 um 14:57:02, schrieb Scott Kostyshak 
> On Mon, Oct 17, 2016 at 08:10:04PM +0200, Enrico Forestieri wrote:
> > On Sun, Oct 16, 2016 at 11:27:02PM -0400, Scott Kostyshak wrote:
> > > I tested it out and have a couple of questions. Attached is a file. If I
> > > compile I get an error ("there's no line to end here"). If I put the
> > > cursor at the end of "hello" and press (forward) delete to remove the
> > > newline (nothing changes on the screen) and then compile, there is no
> > > error.
> > 
> > Fixed at c1bfaa5c.
> Tested and confirmed.
> > > A second question is: Is the diagonal line supposed to be so large?
> > > Screenshot attached.
> > 
> > Yes, unfortunately. There is no way (that I know of) for determing the
> > width occupied by displayed math,
> Neither can I. The only thing I can think of is to preview the display
> equation but that seems like a bad hack for something like this.
> > However, one can redefine \lyxmathsout
> > and customize the width of the line case by case. See the attached first
> > example. Maybe that hook should be provided by default?
> Could be. I think leaving it how you had it is fine though. This is only
> about aesthetics. The important thing is that thanks to your fix, the
> information that the display equation was deleted can now be accurately
> conveyed it the output.
> > I also explored other different ways for striking out displayed math.
> > I like very much method 1 in the second attached example. However, it is
> > more complicated to automate in LyX. Maybe I could do that when I find
> > the necessary time and introduce some preference for choosing the way
> > display math is striked out. But don't hold your breath while waiting ;-)
> OK.
> One more detail I noticed is that the size of the equation is not
> accurate when showing the changes in output. Again, I don't think this
> is that important since the information that the equation was deleted is
> the only critical thing, but I report it nonetheless. To see this,
> compile the attached example file with "show changes in output". The
> equations should be the same size.

For me, they look same size.
> Scott


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