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Add comment to describe camelcase line break

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Michael Howell 2024-10-07 13:27:50 -07:00
parent e23419fc97
commit f7eced3a21
1 changed files with 10 additions and 0 deletions
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10
src/librustdoc/html/escape.rs
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@ -108,6 +108,16 @@ impl<'a> fmt::Display for EscapeBodyTextWithWbr<'a> {
|| pk.map_or(true, |(_, t)| t.chars().any(|c| c.is_uppercase()));
let next_is_underscore = || pk.map_or(true, |(_, t)| t.contains('_'));
let next_is_colon = || pk.map_or(true, |(_, t)| t.contains(':'));
// Check for CamelCase.
//
// `i - last > 3` avoids turning FmRadio into Fm<wbr>Radio, which is technically
// correct, but needlessly bloated.
//
// is_uppercase && !next_is_uppercase checks for camelCase. HTTPSProxy,
// for example, should become HTTPS<wbr>Proxy.
//
// !next_is_underscore avoids turning TEST_RUN into TEST<wbr>_<wbr>RUN, which is also
// needlessly bloated.
if i - last > 3 && is_uppercase() && !next_is_uppercase() && !next_is_underscore() {
EscapeBodyText(&text[last..i]).fmt(fmt)?;
fmt.write_str("<wbr>")?;