fonts/readerly
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Disable old-style kern by default

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This commit is contained in:
Nico Verbruggen
2026-03-02 13:08:37 +01:00
parent 746b8364e8
commit f89256a403
2 changed files with 27 additions and 10 deletions
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15
README.md
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@@ -30,6 +30,19 @@ After running `build.py`, you should get:
- **[fontTools](https://github.com/fonttools/fonttools)** — install with `pip install fonttools` - **[fontTools](https://github.com/fonttools/fonttools)** — install with `pip install fonttools`
- **[FontForge](https://fontforge.org)** — the build script auto-detects FontForge from PATH, Flatpak, or the macOS app bundle - **[FontForge](https://fontforge.org)** — the build script auto-detects FontForge from PATH, Flatpak, or the macOS app bundle
### Linux preparation
```
pip install fonttools
flatpak install flathub org.fontforge.FontForge
```
### macOS preparation
```
brew install fontforge
python3 -m pip install --user -U fonttools
```
## Building ## Building
``` ```
@@ -74,4 +87,4 @@ Several metadata scripts are applied via FontForge:
#### Step 4: Export #### Step 4: Export
The final fonts are exported from FontForge as both SFD (FontForge source) and TTF with old-style kern tables for maximum compatibility with e-reader rendering engines. The final fonts are exported from FontForge as both SFD (FontForge source) and TTF. The build supports optional old-style kern tables, but this is off by default because it has no effect on device tests.

22
build.py
View File

@@ -80,10 +80,14 @@ def find_fontforge():
return FONTFORGE_CMD return FONTFORGE_CMD
# 3. macOS app bundle # 3. macOS app bundle
mac_path = "/Applications/FontForge.app/Contents/MacOS/FontForge" mac_paths = [
if os.path.isfile(mac_path): "/Applications/FontForge.app/Contents/MacOS/FontForge",
FONTFORGE_CMD = [mac_path] "/Applications/FontForge.app/Contents/Resources/opt/local/bin/fontforge",
return FONTFORGE_CMD ]
for mac_path in mac_paths:
if os.path.isfile(mac_path):
FONTFORGE_CMD = [mac_path]
return FONTFORGE_CMD
print( print(
"ERROR: FontForge not found.\n" "ERROR: FontForge not found.\n"
@@ -187,13 +191,13 @@ def main():
print(f" FontForge: {' '.join(ff_cmd)}") print(f" FontForge: {' '.join(ff_cmd)}")
family = DEFAULT_FAMILY family = DEFAULT_FAMILY
old_kern = True old_kern = False
if "--customize" in sys.argv: if "--customize" in sys.argv:
print() print()
family = input(f" Font family name [{DEFAULT_FAMILY}]: ").strip() or DEFAULT_FAMILY family = input(f" Font family name [{DEFAULT_FAMILY}]: ").strip() or DEFAULT_FAMILY
old_kern_input = input(" Export with old-style kerning? [Y/n]: ").strip().lower() old_kern_input = input(" Export with old-style kerning? [y/N]: ").strip().lower()
old_kern = old_kern_input not in ("n", "no") old_kern = old_kern_input in ("y", "yes")
print() print()
print(f" Family: {family}") print(f" Family: {family}")
@@ -224,11 +228,11 @@ def _build(tmp_dir, family=DEFAULT_FAMILY, old_kern=True):
print(f" Instancing {name} (wght={wght}, opsz={opsz})") print(f" Instancing {name} (wght={wght}, opsz={opsz})")
cmd = [ cmd = [
sys.executable, "-m", "fontTools", "varLib.instancer", sys.executable, "-m", "fontTools.varLib.instancer",
vf_path, vf_path,
"-o", ttf_out,
f"wght={wght}", f"wght={wght}",
f"opsz={opsz}", f"opsz={opsz}",
"-o", ttf_out,
] ]
result = subprocess.run(cmd, capture_output=True, text=True) result = subprocess.run(cmd, capture_output=True, text=True)
if result.stdout: if result.stdout: