Re: [NTG-context] Luatex fails to load a font

On Wed, Sep 17, 2008 at 8:57 AM, holzminister wrote:

2008/9/16 Henning Hraban Ramm :

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Am 2008-09-16 um 20:29 schrieb holzminister:

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OpenType can internally use TrueType outlines or PostScript outlines (different algorithms). OpenType with PS outlines normally use the .otf extension; OpenType with TrueType outlines are valid TrueType fonts and therefore normally use the .ttf extension. But OpenType fonts are never valid PostScript fonts.

By far not every TrueType font is OpenType compatible: OT-TT fonts have their characters encoded in Unicode and may use OT features; "normal" TT fonts often use default/custom one-byte encodings.

Thanks for your explanation.

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The ordering in the TeX tree is probably a matter of taste, but you would even more confused to find .ttf fonts within the "truetype" as well as "opentype" folders, for you can't know (without tools) what's really in the font's guts. And don't you think it would be questionable to draw a line between Unicode encoded TrueType fonts with and without OpenType features?

OK, in some cases it makes sense to store them separated. But when I download a font and don't know about its features, I first have to analyse it to put it into the right folder.

No, you don't have to do this. *.ttf -> fonts/truetype *.otf -> fonts/opentype You could also use them from your OS font directory (this is what I did). Wolfgang