docs: show Display forwarding in #[from] example - #460
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SatvikMishra08 wants to merge 1 commit into
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Fixes dtolnay#135. Clarify that #[error("... {0}")] interpolates the #[from] source's Display output, matching the common Disconnect pattern.
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Fixes #135.
Docs-only clarification for
#[from]+ Display:Disconnectexample to#[error("data store disconnected: {0}")]so the source’sDisplayis forwarded into the message#[from]details that{0}/{var}interpolates the source fieldDoes not change the opaque
PublicError/ forwarding-Fromdocs (unrelated to #439 / #456).