ENUM VC_CTL_STATE(9)

💅 enum vc_ctl_state — bestie's guide to vt control-char states

okay so this is from the Kernel API Manual and it is literally the state machine of a virtual terminal's parser, like... the whole "what am I looking at right now" of escape sequences. no cap, it's giving main character energy in drivers/tty/vt. 🎀

✨ NAME ✨

enum vc_ctl_state — the control characters state of a vt 🦋

🌸 SYNOPSIS 🌸

enum vc_ctl_state {
    ESnormal ,
    ESesc ,
    ESsquare ,
    ESgetpars ,
    ESgetsubpars ,
    ESfunckey ,
    EShash ,
    ESsetG0 ,
    ESsetG1 ,
    ESpercent ,
    EScsiignore ,
    ESnonstd ,
    ESpalette ,
    ESosc ,
    ESANSI_first ,
    ESapc ,
    ESpm ,
    ESdcs ,
    ESANSI_last

};

like, that's the whole enum bestie, every single member, no skips 💖

🔥 Constants 🔥

here's the tea on every single one of them, we're not leaving a single state out 👑

• ESnormal — the initial state, where no control characters are parsed. we're just vibing, nothing has happened yet 💀
• ESesc — ESC has been parsed ✨
• ESsquare — CSI has been parsed, so now it's waiting on modifiers / parameters / ctrl chars 👀
• ESgetpars — CSI has been parsed, and it's expecting parameters / ctrl chars 🙈
• ESgetsubpars — CSI m has been parsed, and now it expects subparameters 🫶
• ESfunckey — CSI [ has been parsed 💀
• EShash — ESC # has been parsed ⭐
• ESsetG0 — ESC ( has been parsed 🌈
• ESsetG1 — ESC ) has been parsed 🌸
• ESpercent — ESC % has been parsed 🍓
• EScsiignore — CSI [0x20-0x3f] has been parsed 😭
• ESnonstd — OSC has been parsed 💜
• ESpalette — OSC P has been parsed 🎀
• ESosc — OSC [0-9] has been parsed ✨
• ESANSI_first — the first state for ignoring ansi control sequences 🧚
• ESapc — ESC _ has been parsed 🦋
• ESpm — ESC ^ has been parsed 🔥
• ESdcs — ESC P has been parsed 👑
• ESANSI_last — the last state for ignoring ansi control sequences 💅

🦋 SEE ALSO 🦋

kernel file ./drivers/tty/vt/vt.c plus the whole friend group: vc_font_pitch(9), vc_font_size(9), vc_do_resize(9), __vc_resize(9), vt_resize(9), vc_sanitize_unicode(9), vc_translate_unicode(9), vt_kmsg_redirect(9), con_is_bound(9), con_is_visible(9), con_debug_enter(9), con_debug_leave(9), do_unregister_con_driver(9) — go read them, iykyk 💖

and that's the whole thing bestie, sourced fresh from ./drivers/tty/vt, dated October 2026, iconically versioned as enum vc_ctl_state(9) — periodt 💅✨