is_utf8_continuation(9)

🌸 is_utf8_continuation(9) 🌸

okay so bestie, welcome to the Kernel API Manual — this is the is_utf8_continuation(9) page and it's honestly a tiny little icon ✨

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💅 NAME 💅

is_utf8_continuation — the utf8 multibyte check, and yes she's exactly as niche and essential as she sounds 🎀

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✨ SYNOPSIS ✨

int is_utf8_continuation (u8 c );

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🦋 ARGUMENTS 🦋

• c — the byte to check, bestie. that's it. that's the whole input. one singular byte, living its life 🫶

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👑 RETURN 👑

returns true if the utf8 character c is a multibyte continuation character. fr fr, that's the whole deal 💖

and the reason we even care? we use this to correctly compute the on-screen size of the character when printing. like, so your terminal doesn't have a whole meltdown and misalign everything 😭 the math needs to know if this byte is a continuation or not, no cap.

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🌈 SEE ALSO 🌈

the whole kernel file lives in ./drivers/tty/n_tty.c, and here's the full squad — literally the entire group chat:

• n_tty_kick_worker(9)
• n_tty_write_wakeup(9)
• put_tty_queue(9)
• reset_buffer_flags(9)
• n_tty_flush_buffer(9)
• is_continuation(9)
• do_output_char(9)
• process_output(9)
• process_output_block(9)
• __process_echoes(9)
• add_echo_byte(9)
• echo_move_back_col(9)
• echo_set_canon_col(9)
• echo_erase_tab(9)
• echo_char_raw(9)
• echo_char(9)
• finish_erasing(9)
• eraser(9)
• isig(9)
• n_tty_receive_break(9)
• n_tty_receive_overrun(9)
• n_tty_receive_parity_error(9)
• n_tty_receive_char_flow_ctrl(9)
• n_tty_receive_char(9)
• n_tty_receive_buf_common(9)
• n_tty_set_termios(9)
• n_tty_close(9)
• n_tty_open(9)
• copy_from_read_buf(9)
• canon_copy_from_read_buf(9)
• job_control(9)
• n_tty_read(9)
• n_tty_write(9)
• n_tty_poll(9)
• n_tty_inherit_ops(9)

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💀 reminder that this lives under ./drivers/tty — that's the address, iykyk

k bye bestie, stay slaying those multibyte characters 🧚💜 — this page dropped October 2026 from the ./drivers/tty source, and it's giving legendary. periodt. ⭐