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[why] The systematic evaluation of all fonts is finished and we do not need any comparison with the old naming anymore. This can partially replaced by something like NERDFONTS='--debug --dry --makegroups 1' ./gotta-patch-em-all-font-patcher\!.sh -cv /iA-Writer | grep '===' [note] Also update query_names helper to what I used recently with length indicators. Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
72 lines
3.1 KiB
Markdown
72 lines
3.1 KiB
Markdown
## Creating Consistently Grouped Patched Fonts
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This is a small sub-project to font-patcher that uses a little bit more knowledge
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to come up with font names and name parts. In applications multiple fonts are grouped
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under a 'Family'. Each member of the Family has a different 'SubFamily' or 'Style'.
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Consider a font named 'Times' that has two variants: normal and bold. For this font the
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Family would be 'Times' and the 'Style' would be 'Regular' (i.e normal) in one file and
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'Bold' in the other file.
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With this information applications are able to group all 'Times' together and additionally choose the
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'Bold' font if the user pushes the 'B' button on the font style dialog in that application.
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### Motivation
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Quite a number of patched fonts have inconsistent or simply wrong font grouping. The naming in
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general is sometimes surprising and not following naming conventions. This is in part due to
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the font-patcher, but in part the source fonts are already strange.
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This results in invisible (but installed) fonts in some applications, inconsistent naming
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(Familyname differs from Fullname) and not correctly working bold/italic selectors in some applications.
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And we would like to have the information within the names sorted in a consistent way.
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usually a font name consists of these parts (in this order):
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1. Name base (e.g. `Noto`)
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2. Variant (e.g. `Sans`)
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3. Subvariant (e.g. `Display`)
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4. Weight (e.g. `Black`)
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5. Style (e.g. `Italic`)
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This is important because we want to add subvariant information, namely the `Nerd Font` part.
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Example:
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* (old) `Iosevka Term Light Italic Nerd Font`
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* (new) `Iosevka Term Nerd Font Light Italic`
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### The Plan
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To solve these issues the font name parts have to be analyzed more thoroughly and then categorized.
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These categories are then used to assemble the names in correct order. The simple (not
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typographically aware) applications shall always get groups of at most four styles, and these
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are Regular, Bold, Italic, and Bold-Italic. Other styles turn up as Families, because this is the
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only way they would work in these more simple applications.
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Typographically aware applications, on the other hand, get all styles grouped under one Family name.
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First experiments showed that the full information can usually be restored already from the file
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names that our source fonts have.
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This new naming is complete optional (but recommended). Give the option `--makegroups` to `font-patcher`
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and it will try to come up with reasonable grouping and naming. Leave the option out and it will
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work as it always did.
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### The Tests
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In this directory were two tests. If interested you need to go back in the git history.
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They are not needed anymore.
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### Helper scripts
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There are some helper scripts that help examining the font files. Of course there are other,
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more professional tools to dump font information, but here we get all we need in a concise
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way:
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* `query_mono` `font_name [font_name ...]`
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* `query_names` `font_name [font_name ...]`
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* `query_panose` `font_name`
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* `query_sftn` `[<sfnt-name>] font_name`
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* `query_version` `font_name`
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They can be invoked like this `$ fontforge query_sfnt foo.ttf`.
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