Review-request: Fix infinite loop caused by variable-refresh

[C. Boemann]

On Friday 03 June 2011 22:09:38 Sebastian Sauer wrote:
> C. Boemann wrote:
> > On Friday 03 June 2011 21:13:59 Sebastian Sauer wrote:
> >> Hi,
> >> 
> >> attached patch fixes the infinite loop with the document attached to
> >> comment #3 in https://bugs.kde.org/show_bug.cgi?id=260219 .
> >> 
> >> The idea is to not include the previous and next root-areas and mark
> >> them dirty if charsAdded and charsRemoved ==0 what means no characters
> >> where changed. In such a case we can assume that the change is related
> >> to the current root-area only.
> > 
> > well think of the first line being 48 point font being changed to 8pt.
> > wouldnt this affect the previos page??
> 
> This emits charsAdded>0 and charsRemoved>0. In that case the previous logic
> still applies. It seems the only case where we have charsAdded==0 and
> charsRemoved==0 is with variables where we call documentChanged ourself.
> 
> Attached an updated patch that adds an additional comment for that.
great, then ship it if you already havn't done so