echo_erase_tab(9)

💖 echo_erase_tab(9) 💖

okay bestie, welcome to the Kernel API Manual — this is the page for echo_erase_tab, and it’s lowkey a tiny but iconic little helper. no cap, every detail is here, so let’s go 💅✨

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🌟 NAME 🌟

echo_erase_tab — add operation to erase a tab 🎀

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💫 SYNOPSIS 💫

void echo_erase_tab (unsigned int num_chars , int after_tab , struct
       n_tty_data *ldata );

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🎀 ARGUMENTS 🎀

• num_chars — number of character columns already used 🧮
• after_tab — true if num_chars starts after a previous tab 🫶
• ldata — n_tty data 🦋

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🦋 DESCRIPTION 🦋

Add an operation to the echo buffer to erase a tab. literally that’s the main character move 💅

Called by the eraser function, which knows how many character columns have been used since either a previous tab or the start of input. slay, it’s keeping track 👑

This information will be used later, along with canon column (if applicable), to go back the correct number of columns. yes bestie, the column math is giving precise ✨

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🔥 SEE ALSO 🔥

Kernel file: ./drivers/tty/n_tty.c 🌸

• n_tty_kick_worker(9)
• n_tty_write_wakeup(9)
• put_tty_queue(9)
• reset_buffer_flags(9)
• n_tty_flush_buffer(9)
• is_utf8_continuation(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_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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xoxo, your source/version tag ./drivers/tty 💖 — dated October 2026 🎀 — and the page is literally echo_erase_tab(9) 🌸. periodt.