On Thu, 2005-12-22 at 12:48 +0100, Jean-Marc Lasgouttes wrote: > >>>>> "Martin" == Martin Vermeer <[EMAIL PROTECTED]> writes: > > Martin> Jean-Marc, I think it is safe to assume that we do not want > Martin> *this* in 1.4.0... what about the limited patch, with a better > Martin> signature? > > Yes, it looks a bit too complicated for now :) > > I think singlerow4+fixes+signature would be OK. > > Concerning the signature, we should leverage boost::crc32. Two ideas > of text to compute against: > > - the easy one: take the text of the row (including META_INSET > characters) as a string to compute the crc on, and add the y > information somehow (we could maybe keep a <crc,y> pair as > signature). This is crude, but uniformly better than what we have.
Is crc32 invariant for character transposition? > - the expensive one: generate the .lyx format code to the range in the > row (the changes to lyx writing code to make this happen are > hopefully small) and compute crc on this. This may prove less expensive > than it seems :) Of course, in a world where we hope to be able to > update insets without updating the hosting row, it will redraw too > much. Or use the width of the whole row. *Very* likely to change if the inset gets written into (OK, not perfect) > - an alternative in the middle would be to replace the META_INSET > chars by a string (like "[12,32]") describing the dimension of the > inset. Yes, that's an option too. I'd like to keep it simple though, remember it is only cosmetic. - Martin
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