Fix fsSelection for SF Mono, SF Pro Text and other fonts

On Windows and Linux, intellij IDEA(and other jetbrains' products in general) query a field named fsSlection from font files to determine style of glyphs font files contain. Some font files may actually contain, say italic glyphs, but their fsSlection fields are set as if they contain regular glyphs, so if you happen to use such fonts with intellij IDEA on Windows and Linux, you will see italic glyphs where you are supposed to see regular glyphs. Apple's SanFrancisco font is exactly this case.

So I rolled up some scripts to fix SF Mono and SF Pro Text's Regular, RegularItalic, Bold, BoldItalic. There is also another more general script that can fix any fonts.

patch_SF_Mono_SF_Pro_Text.sh

This script patches SF Mono and SF Pro Text's Regular, RegularItalic, Bold, BoldItatlic font files. It downloads the fonts' .dmg from Apple's upstream url, then patches them, then put the patched and original fonts under <pwd>/SF_Mono_SF_Pro_Text.

There are also font files for other styles and weights, like SemiBold andHeavy and whatnot, but I didn't fix them with this script because I don't know what is the correct fsSelection value for those less common weights and styles. If someone could inform me how to properly fix those fonts, I would gladly update the scripts.

Dependency:

• the other two scripts - get_SF_Mono_SF_Pro_Text.sh and fix_fsSelection.sh
• wget
• 7z
• ttx from fonttools
• xmlstarlet from xmlStarlet

fix_fsSelection.sh

You can use this script to fix fsSelection field for any fonts. That patch_SF_Mono_SF_Pro_Text.sh mentioned above also uses this to fix those fields.

Usage:

./fix_fsSelection.sh font_path font_style_bits
# font_style_bits: <bold bit><italic bit><regular bit>
#                  so, to fix for bold - 100
#                  for bold italic - 110
#                  for regular - 001
#                  for italic - 010
#                  other bits are invalid, like 111 or 000 or whatnot

Example:

./fix_fsSelection.sh ./MyBoldFont.otf 100
./fix_fsSelection.sh ./MyBoldItalicFont.otf 110
./fix_fsSelection.sh ./MyRegularFont.otf 001
./fix_fsSelection.sh ./MyItalicFont.otf 010

Some bad example:

./fix_fsSelection.sh ./MyBoldFont.otf 010
# the font still contains glyphs of bold style
# the command just marks this font as "containing glyphs of itatlic style"
# so when your text editor is about to render itatlic glyph on UI
# it would actually pick this font (and therefore render bold glyphs)

Pretty straightforward..?

Dependency:

• ttx from fonttools
• xmlstarlet from xmlStarlet