Re: Google Summer of Code - LaTeX processing

[Ben Abbott]

On Jun 20, 2013, at 10:47 PM, Michael Goffioul wrote:

> On Thu, Jun 20, 2013 at 10:32 AM, Ben Abbott <address@hidden> wrote:
> 
> 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
> 
> The best it to try it:
> http://www.w3schools.com/cssref/tryit.asp?filename=trycss_line-height
> 
> Michael.

ah-ha ... thanks for the explanation!

Ben