Enum BufferDisplayCategory 

pub enum BufferDisplayCategory {
    LspStatus,
    LspLog,
    Messages,
    HelpTopic,
    HelpDescribe,
    HelpApropos,
    HelpList,
    Hover,
    Signature,
    PickerResult,
}

Per-feature display preference. Each command that produces a buffer carries its category; the App resolves the category to a BufferDisplay via default_display (today) or a user-supplied override (follow-up).

Granularity rationale: per-command is too narrow (six :describe-* variants would need six knobs); per-BufferKind is too coarse (every help-flavoured surface is Help, but hover and :lsp-log have wildly different display intents). Per-category groups commands that share intent, which is what users actually configure.

Multiple-choice surfaces (:diagnostics, :references, :symbol, :Files, :buffers) are picker-shaped by design – the user picks one of N candidates – and don’t have a category here. Their picker UI is a fixed surface; where the selected result lands is governed by Self::PickerResult. The categories below all describe dedicated single-buffer outputs.

Variants

LspStatus

:lsp-status – one-shot read of the supervisor state.

LspLog

:lsp-log / :lsp-trace-log – live-tailed log views the user wants to keep around. (:lsp-server-log is a picker; it routes through Self::PickerResult once the user picks a server, then the chosen log opens under LspLog.)

Messages

:messages – chronological transcript of every echo area message (analogue of emacs’s *Messages*). Live-tailed via the MessagesRing; opens in the active pane by default.

HelpTopic

:help <topic> – free-form help docs.

HelpDescribe

:describe-command/-buffer/-key/-option/-mode/-event – introspection-driven help.

HelpApropos

:apropos <pattern> – search command names + docs.

HelpList

:ls, :keymap, :marks, :registers, :options – state-listing help views.

Hover

K – inline hover / quick-info popup. Auto-dismisses on cursor motion.

Signature

Signature help – argument-list popup that follows the cursor as the user types args.

PickerResult

Where the selected buffer / location lands after the user accepts a picker entry. Used by :diagnostics / :references / :symbol / :Files / :buffers / :lsp-server-log – their picker UI is fixed; this knob controls the post-accept buffer placement.

Trait Implementations

impl Clone for BufferDisplayCategory

fn clone(&self) -> BufferDisplayCategory

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for BufferDisplayCategory

impl Debug for BufferDisplayCategory

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for BufferDisplayCategory

impl Hash for BufferDisplayCategory

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for BufferDisplayCategory

fn eq(&self, other: &BufferDisplayCategory) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BufferDisplayCategory