If font is saved in .sfdir, glyphs with code point > 0xFFFF are saved to files with name uXXXXX.glyph (where XXXXX is upper-case hexadecimal number). If last digit has value > 9, underscore prefix appears.

Example

Save font as test.sfdir with two glyphs: code point 0x1F4F9 and 0x1F4FA.

Expected behavior

There will be glyph files with names:

• u1F4F9.glyph
• u1F4FA.glyph

Current behavior

There are glyph files with names:

• u1F4F9.glyph
• u1F4F_A.glyph

Fix

Pull request #5333