On Oct 16, 2009, at 10:31 PM, Mike Wright wrote:
1. Single Fonts with the ".ttf" file extension have only a data fork, and the name of the file seems to be the name of the font.
Not necessarily. The filename is not part of the font, so it can be arbitrary, and a lot of the time it's not the same as the font name.
b. The other style has a resource fork that includes a 'FOND' resource for each individual font, with the 'FOND' resource names being the names of the fonts. They also include 'sfnt' resources, but the 'sfnt' resources do not have names. (They just have resource IDs that match the resource IDs of the corresponding 'FOND' resources.)
I don't know if the FOND resource is even used anymore. (That's all legacy stuff dating back to about 1986.) The actual font name is in the TrueType font tables making up the 'sfnt' resources.
There are a number of other formats you didn't list, like .otf, .ttc and .dfnt. I think it's still possible to have raw Type 1 PostScript fonts installed, although I don't know what the filetype for those would be. (They used to be files with HFS type 'LWFN'.)
You really, really don't want to mess with this stuff directly, unless you'd like to spend months learning all about the intricacies of font formats.
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