Hagen - Pragma ADE

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Extensions
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Dejavu Regular Dejavu Italic
Figure 8.2 Italic overshoot in Dejavu Serif.
This means that the application of italic correction should never been applied without
knowing the font. In figure 8.3 we see an upright word following an italic. The space is
determined by the upright one.
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Latin Modern Dejavu
Figure 8.3 Italic followed by upright.
Because it is to be used with care you need to enable this feature per font, You also
need to explicitly enable the application of this correction. in figure 8.4 we see italic
correction in action.
\definefontfeature
[italic]
[default]
[itlc=yes]
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Figure 8.4 Italic correction.
This only signals the font constructor that additional italic information has to be added
to the font metrics. As we already mentioned, the application of correction is driven by
the \/ primitive and that one consults the font metrics. Because the correction is not
part of the original font metrics it is calculated automatically by adding a small value to
the width. This value is calculated as follows:
factor * (parameters.uwidth or 40) / 2
The uwidth parameter is sometimes part of the specification but if not, we take a reasonable
default. The factor is under user control:
\definefontfeature
[moreitalic]