Re: Google Summer of Code - LaTeX processing

[Ben Abbott]

On Jun 20, 2013, at 8:49 PM, Michael Goffioul wrote:

> On Thu, Jun 20, 2013 at 8:44 AM, Ben Abbott <address@hidden> wrote:
> 
> On Jun 20, 2013, at 7:57 PM, Michael Goffioul wrote:
> 
> > On Thu, Jun 20, 2013 at 7:49 AM, Benjamin Abbott <address@hidden> wrote:
> > On Jun 20, 2013, at 7:38 PM, Michael Goffioul <address@hidden> wrote:
> >
> >> On Wed, Jun 19, 2013 at 9:57 PM, Ben Abbott <address@hidden> wrote:
> >> On Jun 19, 2013, at 10:46 PM, Michael Goffioul wrote:
> >>
> >> > On Wed, Jun 19, 2013 at 10:40 AM, Andrej Lojdl <address@hidden> wrote:
> >> >
> >> > Error message is:
> >> > get: unknown text property lineheight
> >> > error: called from:
> >> > error:   /usr/share/octave/3.6.2/m/plot/private/__axis_label__.m at line 
> >> > 30, column 3
> >> > error:   /usr/share/octave/3.6.2/m/plot/title.m at line 39, column 7
> >> >
> >> > This may be due to the fact that you marked the option as "hidden".
> >> >
> >> > Michael.
> >>
> >> Correct.  The hidden attribute means the command line has no access to it. 
> >>  I had asked the hidden attributed to be added, as I had inferred he was 
> >> working on the c++ side.
> >>
> >> He's working in C++, specifically modifying this to add a new parameter:
> >>
> >> http://hg.savannah.gnu.org/hgweb/octave/file/0bf1d559b321/libinterp/interp-core/gl-render.cc#l2665
> >>
> >> But it appears you can't get a property by name if it's hidden, even in 
> >> C++. The other solution would be to use get_lineheight(), but that's not 
> >> possible as you only have a base_properties object.
> >>
> >> Michael.
> >
> > How will write access be prevented on the m-file side?
> >
> > It shouldn't be prevented, otherwise the property is useless :)
> > Maybe I'm wrong, but I had the impression that a "hidden" property would 
> > not appear in the list of properties (e.g. in "get(h)"), but would still be 
> > readable/writable if you refer it by name.
> >
> > Michael.
> 
> My expectation is that from Octave's command line, "lineheight" would be 
> similar to the text object's "extent" property, but be hidden like the 
> figure's looseinset property (which is still readable and writable).
> 
> No. The "lineheight" property is intended to be controlled by the user, not 
> automatically computed. The "hidden" flag is only because there's no 
> equivalent in Matlab.
>  
> That expectation is because I've assumed that the line height would not be 
> something the user has control over, but would be determined in a manner 
> equivalent to what is now done for the line height for "interpreter" = "tex" 
> or "none".
> 
> I've mentioned it at least 10 times before. The intent is to have something 
> that is equivalent to the CSS line-height property.
> 
> Michael.

Ok. My apologies.  I have no idea what " CSS line-height property" is

Ben