Enum HelpTopicBody 

pub enum HelpTopicBody {
    Static(&'static str),
    Owned(String),
    Compressed {
        packed: &'static [u8],
        raw_len: usize,
        cache: OnceLock<String>,
    },
    Dynamic(Box<dyn Fn() -> String + Send + Sync>),
}

Where a topic’s body comes from.

• Static — a compile-time &'static str. Used by tests and by any caller registering a topic from a string it already holds.
• Owned — runtime markdown the registry owns. What a plugin’s pages land as (CR.3): the body crossed the WASM boundary as an owned String and there is no 'static to borrow from. Chosen over leaking the string — a leak would survive unload, and a plugin reloaded repeatedly would accumulate a copy of its manual each time.
• Compressed — deflate-compressed markdown embedded at build time. Every builtin topic is one of these. Decompressed on first render and cached, so a session that never opens :help never decompresses anything and the second open of a topic is free.
• Dynamic — a closure invoked on every open (the seam for LSP / introspection). NOT what plugin pages use: it re-invokes on every open, and a help plugin’s guest is dropped once its bodies are across.

Variants

Static(&'static str)

Owned(String)

Compressed

Fields

packed: &'static [u8]

Raw deflate stream (no zlib/gzip wrapper).

raw_len: usize

Decompressed length, used to size the output buffer exactly.

cache: OnceLock<String>

Decompressed body, filled on first HelpTopicBody::render.

Dynamic(Box<dyn Fn() -> String + Send + Sync>)

Implementations

impl HelpTopicBody

pub fn render(&self) -> String