Hello, I use mutt and happened to receive an email that caused st to crash. It turned out that the email contained a unicode emoji character for which I didn't have a suitable font.
The character in question was U+1F917. I was able to reproduce the crash in st by cat-ing a file containing the single bad character. Pasting it from the X clipboard also reliably causes the crash. This is the error that is produced: X Error of failed request: BadLength (poly request too large or internal Xlib length error) Major opcode of failed request: 139 (RENDER) Minor opcode of failed request: 20 (RenderAddGlyphs) Serial number of failed request: 1442 Current serial number in output stream: 1454 I'm guessing that somewhere a 'missing glyph' error isn't getting checked, but I wasn't able to find the relevant code from a quick perusal. Anyway, the same issue seems to exist in dmenu. As a sanity check, I checked against the following: 1) different X terminal, i.e. xterm, 2) different character with missing glyph, i.e. U+1F642, and 3) installing a font with the appropriate glyphs, i.e. Symbola. As far as I can tell, the crash reliably occurs in st when attempting to display a character that has no associated glyph. As a workaround, I was able to install the Symbola font which apparently contains several unicode emoji.
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