On Mon, 13 Jun 2011, Pander wrote: > TeX Live 2010 > > /usr/local/texlive/2010/texmf-dist/fonts/opentype/public/ocr-b-outline/ocrb10.otf
That is Zdeněk Wagner's auto-conversion of Norbert Schwarz's Metafont source. It doesn't contain f-ligatures no matter what the GSUB table may say. I took a look at it with Fontforge and I see that it contains a GSUB table pointing the ligatures at "alternate" and added non-ASCII characters from the Schwarz version, some of which happen to be ligature-like but not the correct ones. For instance, "fl" points at the Æ glyph. I recogize that pattern because it happened in an earlier version of my own version of the font, as a result of auto-conversion. The thing is, Schwarz's Metafont files used a nonstandard custom encoding. If you simply convert the font code point for code point to whatever the default 8-bit Adobe encoding might be, you end up with Schwarz's extra glyphs at the "f-ligature" code points (as well as some distortions at quotation mark, dotless i and j, and similar code points). The existence of a GSUB table pointing at those points can probably be explained by defaults from the auto-conversion. So in summary, yes, it's a bug in the font. The current version of my own OCR B fonts, available on ansuz.sooke.bc.ca, is also based on Schwarz's, but via a more manual conversion process (rewriting the Metafont sources to work with MetaType1), and I've attempted to put all glyphs at their correct Unicode code points. It contains a GSUB table for alternate forms of glyphs, but none for ligatures. > > I just downloaded the demo from here: > > http://www.barcodesoft.com/ocr_font.aspx > Maybe TeX Live should use these OTF files? Barcodesoft's "free" version is a watermarked demo of an expensive commercial product, basically just an advertisement, and for that reason I wouldn't recommend its distribution in TeXLive; I'm not even sure that the license agreement would allow such distribution. -- Matthew Skala msk...@ansuz.sooke.bc.ca People before principles. http://ansuz.sooke.bc.ca/
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