[XeTeX] How to create a fake slanted font variant with fontspec

[Peter Dyballa]

Hello!

When fontspec is loaded it tries to set a slanted font variant to keep NFSS2 satisfied. But when there is no such variant in a font family \textsl{some slanted text} is left as is (default). When I then try

	\newfontface\slanted[RawFeature={slant=0.149}]{Font Family}
	\DeclareRobustCommand{\textsl}[1]{{\slanted #1}}

it has the disadvantage that no bold variant is available and that a new font family instance is created:

	.................................................
	. fontspec info: "defining-font"
	. 
	. Font family 'FontFamily(1)' created for font 'Font Family' with options
	. [Mapping=tex-text,
	. Renderer=ICU,BoldFont={},ItalicFont={},SmallCapsFont={},RawFeature={slant=0.194}].
	. 
	. This font family consists of the following shapes:
	. 
	. * 'normal' with NFSS spec.:
	. <->"Font Family/ICU:mapping=tex-text;slant=0.149;"
	.................................................

Is there another way to create fake slanted variants from the upright normal and upright bold variants?

--
Greetings

  Pete

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